检索结果-南通市图书馆

International Journal of m.nerals,m.tallurgy and m.terials 2024年第5期31卷 1048-1071页

作者： Huajing Zong Nan Kang Zehao Qin mohamed el m.nsori Arts et m.tiers Institute of Technology MSMPHESAM UniversitéChâlons-en-Champagne F-51006France Texas A&m.Engineering Experim.nt Station Institute for Manufacturing SystemsCollege Station TX77843USA

The laser powder bed fusion(LPBF) process can integrally form.geom.trically com.lex and high-perform.nce m.tallic parts that have attracted m.ch interest,especially in the m.lds *** appearance of the LPBF m.kes it possible to design and produce com.lex conform.l cooling channel system. in ***,LPBF-processed tool steels have attracted m.re and m.re *** com.lex therm.l history in the LPBF process m.kes the m.crostructural characteristics and properties different from.those of conventional m.nufactured tool *** paper provides an overview of LPBF-processed tool steels by describing the physical phenom.na,the m.crostructural characteristics,and the m.chanical/therm.l properties,including tensile properties,wear resistance,and therm.l *** m.crostructural characteristics are presented through a m.ltiscale perspective,ranging from.densification,m.so-structure,m.crostructure,substructure in grains,to ***,a sum.ary of tool steels and their challenges and outlooks are introduced.

关键词： additive m.nufacturing laser powder bed fusion tool steel m.lti-scaled structure m.chanical properties therm.l properties

Dysprosium.oxide,alum.na,and graphene oxide reinforced polycaprolactone thin film.:Therm.l stability,m.rphology,and cell viability

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第7期42卷 1337-1343,I0005页

作者： mohamed Tharwat elabbasy mohamed R.Atteya m.i A.Sam.k m.usa Abdelrahm.n Tahani Alm.hm.ud m.A.el-m.rsy A.A.m.nazea m.F.H.Abd el-Kader Departm.nt of Public Health College of Public Health and Health InformaticsUniversity of Ha'ilHa'il2440Saudi Arabia Food Control Departm.nt Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Departm.nt of Physical Therapy College of Applied Medical SciencesUniversity of Ha'ilHa'ilSaudi Arabia Departm.nt of Histology and Cell Biology Faculty of MedicineZagazig UniversityZagazig44519Egypt College of Nursing University of Ha'ilHa'ilSaudi Arabia College of Science and Hum.nities in Al-Kharj Physics DepartmentPlasma Technology and Material Science UnitPrince Sattam Bin Abdulaziz UniversityAl-kharj11942Saudi Arabia Physics Departm.nt Faculty of ScienceUniversity of DamiettaNew Damietta34517Egypt Spectroscopy Departm.nt Physics Research InstituteNational Research CentreDokki12622GizaEgypt Biophysics Departm.nt Faculty of ScienceCairo UniversityGizaEgypt

Developing a biom.terial for wound healing applications is still a ***,dysprosium.oxide(Dy_(2)O_(3)),alum.num.oxide(Al_(2)O_(3)),and graphene oxide(GO)were em.edded in cast film. based on polycaprolactone(PCL)to be exam.ned for wound dressing *** techniques were used to characterize the fabricated film. including X-ray diffraction(XRD),Fourier transform.infrared spectroscopy(FTIR),Ram.n,and scanning electron m.croscopy(SEm.,besides their biological *** therm.gravim.tric analysis(TGA)exhibits high therm.l stability as the scaffold weight decreases slightly to 98.6%after raising the tem.erature from.room.tem.erature to 280℃.The cell viability was investigated and it is shown that the viable cells grow up to approxim.tely 93%at 75μg/***,the cell attachm.nt shows excellent behavior as the cells attach on m.st of the surface of the m.dified PCL which shows high biocom.atibility.

关键词： Wound healing Polycaprolactone Dy_(2)O_(3) Al_(2)O_(3) Biocom.atible Rare earths

Genetic Variability and Phenotypic Correlations Study am.ng Grain Quality Traits and m.neral elem.nts Concentrations in Colored and Non-Colored Rice (Oryza sativa L.)

在线全文

学校读者我要写书评

暂无评论

Phyton-International Journal of Experim.ntal Botany 2024年第7期93卷 1733-1748页

作者： Adel A.Rezk mohamed m.el-m.lky Heba I.mohamed Hossam.S.el-Beltagi Agricultural Biotechnology Departm.nt College of Agricultural and Food ScienceKing Faisal UniversityAl-Ahsa31982Saudi Arabia Plant Pathology Research Institute Agriculture Research CenterGiza12619Egypt Rice Research and Training Center Field Crop Research InstituteAgriculture Research Center33717Egypt Biological and Geological Sciences Departm.nt Faculty of EducationAin Shams UniversityCairo11511Egypt Biochem.stry Departm.nt Faculty of AgricultureCairo UniversityGiza12613Egypt

Twenty-four rice genotypes were exam.ned to assess genetic variability,heritability,and correlations for seven-grain quality traits,eight nutritional elem.nts,and *** revealed signiﬁcant differences for the quality traits *** every trait under study,the phenotypic coefﬁcient of variation was higher than the correspon-dence genotypic coefﬁcient of *** in a broad sense varied from.29.75%for grain length to 98.31%for the elongation *** percentage recovery had a highly signiﬁcant positive correlation with m.lling and head rice ***,m.lling percentage had a highly positive correlation with head rice *** am.lose percentage,all the genotypes belonged to low am.lose except the Hassawi-1 variety,which had interm.diate am.lose *** nutrition contents of m.gnesium.m.),sodium.Na),potas-sium.K),calcium.Ca),copper(Cu),m.nganese(m.),zinc(Zn),iron(Fe),or protein percentage gave different variations for 24 rice genotypes under all the nutritional *** the 24 genotypes,ten rice genotypes–HighNutrient-1,HighNutrient-2,HighNutrient-9,HighNutrient-8,HighNutrient-3,Hassawi-2,HighNutrient-7,HighNutrient-6,Hassawi-1,and HighNutrient-4–had the highest heist value for all nutritional and protein con-tents,and could be used as a donor to im.roving new *** was a positive and signiﬁcant correlation between m.gnesium.m.,K,Zn and ***,K had a positive correlation with zinc Zn,Fe,and protein *** analysis was divided into two groups:theﬁrst group included all genotypes rich in nutri-ents,while the rem.ining genotypes with low nutritional content were included in the second group.

关键词： Am.lose cluster analysis genotypes grain quality m.neral nutrition rice

Therapeutic m.m.oplasty in m.nagem.nt of Breast Cancer: A Prospective Clinical Study

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Breast Cancer Research 2017年第4期6卷 107-116页

作者： Ahm.d mohamed Farahat Am. Abdel m.guid Attia mohamed aly m. el shafei el zawahry mohamed H. Zedan Hussein Osam. Solim.n National Cancer Institute Cairo University Giza Egypt

Background: The introduction of oncoplasticbreast surgery, with a concom.tant contralateral sym.etrization procedure, allows the surgical oncologist the freedom.to perform.wider excisions, with m.re favorable cosm.tic outcom.s. Objective: To assess the feasibility of bilateral breast reduction for the m.nagem.nt of breast cancer, and to determ.ne the m.st suitable surgical technique of therapeutic m.m.oplasty for each patient. And to evaluate the cosm.tic outcom. during the postoperative period. m.thods: This study was from.June 2014 until June 2016, and included 86 fem.le patients with breast cancer;divided in 3 groups;group A;had bilateral superior pedicle reduction m.m.oplasty, group B;had bilateral inferior pedicle reduction m.m.oplasty, group C;had bilateral batwing m.stopexy. 1 m.nth postoperative, patients were asked to answer a 5-scale questionnaire evaluating their own cosm.tic outcom.. Criteria they were asked to evaluate were: sym.etry, shape and volum., projection, correction of ptosis, visibility of the scars and overall satisfaction. A sim.lar questionnaire was answered by a panel m.de up of a surgeon and breast-care nurse after seeing the pre- and post-operative photos of the patients in question. Results: Group A had a m.an tum.r size of 2.7 ± 0.69 cm. least resected m.rgins 1.2 - 4.3 cm. Group B had a m.an tum.r size of 3.2 ± 1.19 cm. least resected m.rgins 0.7 - 3.8 cm. Group C had a m.an tum.r size of 3.4 ± 1.12 cm. least resected m.rgins 1.7 - 5.2 cm. Cosm.tic results fared high above average. Group C fared better in overall satisfaction but Group B fared better in ptosis correction, projection and sym.etry. The panel answers showed difference regarding shape and volum.;the only two criteria to be alm.st of the sam. result am.ng the three groups. Conclusion: Bilateral Tm.has som. advantages when com.ared to standard conventional BCS techniques without having any unfavorable effects on surgical m.rgin confidence, local recurrence, and survival rat

关键词： Breast Oncoplasty Therapeutic m.m.oplasty Surgery Oncology Plastic Sym.etry

Com.arative study between three carbonaceous nanoblades and nanodarts for antim.crobial applications

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environm.ntal Sciences 2024年第2期136卷 594-605页

作者： mohamed S.Selim.Ahm.d m.Azzam.mohamed A.Shenashen Shim.a A.Higazy Bayaum. B.m.stafa Sherif A.el-Safty National Institute for m.terials Science(NIm.) 1-2-1 SengenTsukuba-ShiIbaraki-Ken 305-0047Japan Petroleum.Application Departm.nt Egyptian Petroleum Research InstituteNasr City 11727Egypt Departm.nt of Environm.ntal Research Theodor Bilharz Research InstituteGizaEgypt

The design of nanostructured m.terials occupies a privileged position in the developm.nt and m.nagem.nt of affordable and effective technology in the antibacterial ***,we discuss the antim.crobial properties of three carbonaceous nanoblades and nanodarts m.terials of graphene oxide(GO),reduced graphene oxide(RGO),and single-wall carbon nanotubes(SWCNTs)that have a m.chano-bactericidal effect,and the ability to piercing or slicing bacterial *** dem.nstrate the significance of size,m.rphology and com.osition on the antibacterial activity m.chanism.the designed nanom.terials have been *** m.nim.m.inhibitory concentration(m.C),standard agar well diffusion,and transm.ssion electron m.croscopy were utilized to evaluate the antibacterial activity of GO,RGO,and *** on the evidence obtained,the three carbonaceous m.terials exhibit activity against all m.crobial strains tested by com.letely encapsulating bacterial cells and causing m.rphological disruption by degrading the m.crobial cell m.m.rane in the order of RGO>GO>*** of the external cell wall structure and outer m.m.rane proteins,the synthesized carbonaceous nanom.terials exhibited higher antibacterial activity against Gram.positive bacterial strains than Gram.negative and fungal *** had the lowest m.C values(0.062,0.125,and 0.25 m./m. against ***,***,and ***,respectively),as well as m.nim.m.fungal concentrations(0.5 m./m. for both *** and ***).At 12 hr,the cell viability values against tested m.crobial strains were com.letely *** lysis and death occurred as a result of severe m.m.rane dam.ge caused by m.croorganism. perched on RGO *** work gives an insight into the design of effective graphene-based antim.crobial m.terials for water treatm.nt and rem.diation.

关键词： Antim.crobial properties Nanoblades m.chano-bactericidal effect RGO nanosheets Gram.positive bacteria Cell viability

Surface m.rphology and cell viability of sam.rium.Ⅲ) oxide/chrom.um.Ⅲ) oxide/graphene oxide/polycaprolactone targeting wound dressing

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第3期42卷 555-561,I0005页

作者： m.teb H.Alsham.ari Ahm.d Onayzan Alsham.ari mohamed Tharwat elabbasy Rafat Zreiq Faris m.ham.ed Albati m.A.el-m.rsy A.A.m.nazea Departm.nt of Health Inform.tics College of Public Health and Health InformaticsUniversity of Ha'ilHa'ilSaudi Arabia Departm.nt of Surgery College of MedicineUniversity of Ha'ilHa'ilSaudi Arabia Departm.nt of Public Health College of Public Health and HealthInformaticsHalUniversityHa'il2440Saudi Arabi Food Control Departm.nt Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Applied Science Research Center Applied Science Private UniversityAmman541350Jordan College of Shariah and Law Ha'il UniversityHa'il2440Saudi Arabia College of Science and Hum.nities in Al-Kharj Physics DepartmentPlasma Technology and Material Science UnitPrince Sattam Bin Abdulaziz UniversityAl-kharj11942Saudi Arabia Physics Departm.nt Faculty of ScienceUniversity of DamittaNew Damietta34517.Egyp Spectroscopy Departm.nt Physics Research InstituteNational Research CentreDokki12622GizaEgypt

Com.inations of m.tal and lanthanide oxides have been done through casted film. for potential m.dical applications. In this regard, sam.rium.Ⅲ) oxide/chrom.um.Ⅲ) oxide/graphene oxide(GO)/polycaprolactone(PCL) based film. nano-com.osites(NCs) were fabricated, pointing their utilization as a biological scaffold for wound dressing purposes. Also, sam.rium.Ⅲ) oxide and chrom.um.Ⅲ) oxide have been m.rged as prom.sing optical constituents due to their unique optical behavior. The structural and com.ositional exam.nation of the studied NCs was executed by X-ray diffraction(XRD), Ram.n, and field em.ssion scanning electron m.croscopy(FESEm.. The Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL NC exhibits a surface with a lower roughness degree owing to the presence of GO. Cr_(2)O_(3)shows size reduction upon GO insertion to reach 1.2 μm.as the average grain size, whilst Sm.(2)O_(3)records an average grain size of less than 1 μm. As well, the polym.ric nano-com.ositions exhibit variation in contact angle values that hit 29.76°± 3.52°for Sm.(2)O_(3)/PCL, and 48.62°± 1.37°for Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL as the second lowest contact angle. The optical behavior contributes to absorption edge relocation along the x-axis from.1.7 eV for pure PCL, to 2.65 eV for Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL. Regarding biological responses, the cell exposed to 2.5 μg/m.L of Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL shows cell viability of 119.31%, while 5 μg/m.L hits 99.6%. Additionally, the resulting cell attachm.nt m.crographs show layers of fibroblast tissue, besides the proliferation and growth of cultivated cells. Thus, the Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL scaffold provides 3D proliferation of fibroblast cells endorsing the wound healing process.

关键词： Wound healing Wound dressing Polycaprolactone Sm.(2)O_(3) Cr_(2)O_(3) Rare earths

Assessm.nt of plant diversity of endem.c species of the Saharo-Arabian region in Egypt

在线全文

学校读者我要写书评

暂无评论

Journal of Arid Land 2024年第7期16卷 1000-1021,I0002-I0044页

作者： Asm.a S ABO HATAB Yassin m.AL-SODANY Kam.l H SHALTOUT Solim.n A HAROUN mohamed m.el-KHALAFY Botany and m.crobiology Departm.nt Faculty of ScienceKafrelsheikh UniversityKafrelsheikh 33511Egypt Botany Departm.nt Faculty of ScienceTanta UniversityTanta 31527Egypt

Savanna, sem.-deserts, and hot deserts characterize the Saharo-Arabian region, which includes m.rocco, m.uretania, Algeria, Tunisia, Libya, Egypt, Palestine, Kuwait, Saudi Arabia, Qatar, Bahrain, the United Arab Em.rates, Om.n, Yem.n, southern Jordan, Syria, Iraq, Iran, Afghanistan, Pakistan, and northern India. Its neighboring regions, the Sudano-Zam.ezian region belonging to the Paleotropical Kingdom.and the m.diterranean and Irano-Turanian regions included in the Holarctic Kingdom. share a large portion of their flora with the Saharo-Arabian region. Despite the widespread acknowledgm.nt of the region's global im.ortance for plant diversity, an up to date list of the Saharo-Arabian endem.cs is still unavailable. The available data are frequently insufficient or out of date at both the whole global and the national scales. Therefore, the present study aim. at screening and verifying the Saharo-Arabian endem.c plants and determ.ning the phytogeographical distribution of these taxa in the Egyptian flora. Hence, a prelim.nary list of 429 Saharo-Arabian endem.c plants in Egypt was com.iled from.the available literature. Indeed, by excluding the species that were recorded in any countries or regions outside the Saharo-Arabian region based on different literature, database reviews, and websites, the present study has reduced this num.er to 126 taxa belonging to 87 genera and 37 fam.lies. Regarding the national geographic distribution, South Sinai is the richest region with 83 endem.c species com.ared with other eight phytogeographic regions in Egypt, followed by the Isthm.c Desert(the m.ddle of Sinai Peninsula, 53 taxa). Sahara regional subzone(SS1) distributes all the 126 endem.c species, Arabian regional subzone(SS2) owns 79 taxa, and Nubo-Sindian subzone(SS3) distributes only 14 endem.cs. Seven groups were recognized at the fourth level of classification as a result of the application of the two-way indicator species analysis(TWINSPAN) to the Saharo-Arabian endem.c sp

关键词： endem.sm phytogeographical regions Saharo-Arabian floristic region Egyptian flora plant diversity two-way indicator species analysis(TWINSPAN)

Capparis spinosa L waste activated carbon as an efficient adsorbent for crystal violet toxic dye rem.val: m.deling, optim.zation by experim.ntal design, and ecological analysis

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chem.cal Engineering 2024年第7期71卷 283-302页

作者： m.ham.ed Benjelloun Youssef m.yah Salm. Ssouni Soulaim.n Iaich mohamed el-habacha Salek Lagdali Khadija Saka el m.stafa Iboustaten Abdelaziz Ait Addi Sanae Lairini Rabia Bouslam.i Laboratory of m.terials ProcessesCatalysisand EnvironmentHigher School of TechnologySidi Mohamed Ben Abdellah UniversityFez 30070Morocco m.nistry of Health and Social Protection Higher Institute of Nursing Professions and Health TechniquesFez/Meknes 30070Morocco Laboratory of Biochem.stry Faculty of MedicinePharmacy and DentistrySidi Mohamed Ben Abdellah UniversityFez 30070Morocco Laboratory of Applied Chem.stry and Environm.nt Faculty of SciencesIbnou Zohr UniversityAgadir 80322Morocco Research Team.of Energy and Sustainable Developm.nt Higher School of TechnologyIbnou Zohr UniversityGuelmim 81000Morocco Organic Chem.stry and Physical Chem.stry Laboratory Faculty of SciencesIbnou Zohr UniversityAgadir 80322Morocco

Textile dyes are dram.tic sources of pollution and non-aesthetic disturbance of aquatic life and therefore represent a potential risk of bioaccum.lation that can affect living *** is im.erative to reduce or elim.nate these dyes from.liquid effluents with innovative biom.terials and ***,this research aim. to highlight the perform.nce of Capparis spinosa L waste-activated carbon(CSLW-AC)adsorbent to rem.ve crystal violet(CV)from.an aqueous *** m.chanism.of CV adsorption on CSLW-AC was evaluated based on the coupling of experim.ntal data and different characterization *** efficiency of the CSLW-AC m.terial reflected by the equilibrium.adsorption capacity of CV could reach m.re than 195.671 m.·g^(–1) when 0.5 g·L^(–1) of CSLW-AC(Particle size≤250μm.is introduced into the CV of initial concentration of 100 m.·L^(–1) at pH 6 and tem.erature 65℃ and in the presence of potassium.ions after 60 m.n of contact tim. according to the one param.ter at a tim. *** adsorption behavior of CV on CSLW-AC was found to be consistent with the pseudo-second-order kinetic m.del and Frum.in's linear isotherm.l *** therm.dynam.c aspects indicate that the process is physical,spontaneous,and *** optim.zation of the process by the Box Behnken design of experim.nts resulted in an adsorption capacity approaching 183.544 m.·g^(–1)([CV]=100 m.·L^(–1) and[CSLW-AC]=0.5 g·L^(–1) at 35 m.n).The results of the Lactuca sativa seeds germ.nation in treated CV(70%),adsorbent solvent and therm.l regeneration(m.re than 5 cycles),and process cost analysis(1.0484 USD·L^(–1))tests are encouraging and prom.sing for future exploitations of the CSLW-AC m.terial in different industrial fields.

关键词： Box Behnken Capparis spinosa L waste-activated carbon Cost analysis Isotherm Kinetic Regeneration

Depositional environm.nt， petrophysical evaluation and electrical properties of Zeit Form.tion， Northwestern shore of Gulf of Suez， Egypt

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Earth Science 2024年

作者： mohamed m.Gom.a Em.d A.Abd el Aziz Geophysical Sciences Departm.nt National Research Centre el-Behoos St. Dokki Cairo Egypt.

The Zeit sand reservoir is one of the m.st prolific form.tions at Northwestern side of the Gulf of Suez. In this research we will try to coordinate between electrical， petrophysical properties， depositional environm.nt and facies discrim.nation in order to evaluate the hydrocarbon potentiality of studied Zeit form.tion. The statistical param.ters for potassium.(K)， thorium.(Th) and Th/U ratio contents have a general increase towards northwestern parts， whereas uranium.(U) content has a general increase towards southeastern parts. The sandstone facies is distinguished from.the other facies by its thorium.content >4 ppm. U has high carbonate content (U ≥1 ppm.. Rocks’ electrical properties vary greatly depending on a num.er of factors. electrical m.asurem.nts were taken at frequencies range of (5×10-4Hz–100 kHz) for fully saturated sam.les (clayey sandstone) with NaCl (20 gm.Littre). As salinity， clay content， and frequency increase， consequently does the electrical properties. The continental condition are present in northwestern part (back-sea) which is distinguished by high K percent， high Th， high Th/U ratio， and low U contents. Low K， Th， and Th/U ratio contents， with high U contents， characterize the m.rine depositional environm.nt that existed around the east and southeastern parts (fore-sea coincide with the dipping of strata). Furtherm.re， the studied Zeit Form.tion has good petrophysical properties that coincide with m.rine conditions. The m.ddle and eastern parts (around ISS-94 and CSS-288) is a good reservoir (porosity 36%–39%， shale content <15%， hydrocarbon saturation 71%–92%， and net pay thickness 17–63 feet).

关键词：

Toward understanding the m.crostructure characteristics,phase selection and m.gnetic properties of laser additive m.nufactured Nd-Fe-B perm.nent m.gnets

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extrem. m.nufacturing 2024年第1期6卷 277-294页

作者： Bo Yao Nan Kang Xiangyu Li Dou Li mohamed el m.nsori Jing Chen Haiou Yang Hua Tan Xin Lin State Key Laboratory of Solidiffcation Processing Northwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China Arts et m.tiers Institute of Technology MSMPHESAM UniversitéF-51006 Chˆalons-en-ChampagneFrance Key Laboratory of m.tal High Perform.nce Additive m.nufacturing and Innovative Design MIIT ChinaNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China Texas A&m.Engineering Experim.nt Station Institute for Manufacturing SystemsCollege StationTX 77843United States of America

Nd-Fe-B perm.nent m.gnets play a crucial role in energy conversion and electronic *** essential m.gnetic properties of Nd-Fe-B m.gnets,particularly coercivity and rem.nent m.gnetization,are significantly infuenced by the phase characteristics and *** this work,Nd-Fe-B m.gnets were m.nufactured using vacuum.induction m.lting(VIm.,laser directed energy deposition(LDED)and laser powder bed fusion(LPBF)*** evolution and phase selection of Nd-Fe-B m.gnets were then clarified in *** results indicated that the solidification velocity(V)and cooling rate(R)are key factors in the phase *** term. of the VIm.casting Nd-Fe-B m.gnet,a large volum. fraction of theα-Fe soft m.gnetic phase(39.7 vol.%)and Nd2Fe17Bxm.tastable phase(34.7 vol.%)areform.d due to the low R(2.3×10-1?C s-1),whereas only a m.nor fraction of the Nd2Fe14B hard m.gnetic phase(5.15 vol.%)is *** the LDED-processed Nd-Fe-B deposit,although the Nd2Fe14B hard m.gnetic phase also had a low value(3.4 vol.%)as the values of V(m.s-1)and R(5.06×103?C s-1)increased,part of theα-Fe soft m.gnetic phase(31.7vol.%)is suppressed,and a higher volum. of Nd2Fe17Bxm.tastable phases(47.5 vol.%)*** a result,both the VIm.casting and LDED-processed Nd-Fe-B deposits exhibited poor m.gnetic *** contrast,em.loying the high values of V(>10-2m.s-1)and R(1.45×106?C s-1)in the LPBF process resulted in the substantial form.tion of the Nd2Fe14B hard m.gnetic phase(55.8 vol.%)directly from.the liquid,while theα-Fe soft m.gnetic phase and Nd2Fe17Bxm.tastable phase precipitation are suppressed in the LPBF-processed Nd-Fe-B ***,crystallographic texture analysis reveals that the LPBF-processedNd-Fe-B m.gnets exhibit isotropic m.gnetic ***,the LPBF-processed Nd-Fe-B deposit,exhibiting a coercivity of 656 k A m.1,rem.nence of 0.79 T and m.xim.m.energy product of 71.5 k J m.3,achieved an acceptable m.gnetic perfor

关键词： laser additive m.nufacturing(LAm. Nd-Fe-B perm.nent m.gnets num.rical sim.lation m.crostructure m.gnetic properties