检索结果-南通市图书馆

Corrosion Resistance of Superhydrophobic Mg(OH)_(2)/Calcium Myristate Composite Coating on Magnesium Alloy AZ31

Acta Metallurgica Sinica(English Letters) 2021年第12期34卷 1618-1634页

作者： zheng-zheng Yin Wei Zhao Jing Xu Rong-Chang Zeng Feng-Qin wang zhen-lin wang Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan 430070China College of Materials Science and Engineering Chongqing University of TechnologyChongqing 400065China

Hydrophobic Mg(OH)_(2)/calcium myristate(Ca[CH3(CH2)12COO]_(2),CaMS)and Mg(OH)_(2)/magnesium myristate(Mg[CH3(CH2)12COO]2,MgMS)composite coatings were prepared on the alkali-treated AZ31 substrates via both electrodeposition and dipping *** morphologies,compositions,and constitutes of the coatings were investigated by using field-emission scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),and Fourier transform infrared spectrometry(FTIR)together with X-ray diffractometer(XRD).Furthermore,electrochemical(polarization and impedance spectroscopy)and hydrogen evolution tests were applied to evaluate the corrosion *** wettability and adhesive strength of the composite coatings were characterized through water static contact angle(CA),sliding angle(SA),and nano-scratch *** indicated that the better super-hydrophobicity,corrosion resistance,and adhesion were achieved via an electrodeposited *** corrosion current density(icorr)and hydrogen evolution rate(HER)of the electrodeposited coating were three and one orders of magnitude smaller than the substrate,implying a significantly improved corrosion *** scenario was ascribed to the super-hydrophobicity of electrodeposited composite coating with a contact angle(CA)and slide angle(SA)of 159.2°±0.8°and 5.2°±0.8°,***,the dipped composite coating was adverse to the improvement of corrosion resistance and adhesion due to the dissolution of the underlying Mg(OH)_(2)layer and smooth surface with less organic fatty acid salt(MgMS)

关键词： Magnesium alloy Electrodeposition and dipping Super-hydrophobicity Corrosion resistance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Corrosion resistance and superhydrophobicity of one-step polypropylene coating on anodized AZ31 Mg alloy

引用

Journal of Magnesium and Alloys 2021年第4期9卷 1452-1466页

作者： Zhao-Qi Zhang Li wang Mei-Qi Zeng Rong-Chang Zeng Cun-Guo lin zhen-lin wang Dong-Chu Chen Qiang Zhang Corrosion Laboratory for Light Metals College of Material Science and EngineeringShandong University of Science and TechnologyQingdao 266590China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteQingdao 266101China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China College of Materials Science and Engineering Chongqing University of TechnologyChongqing 400065China School of Materials Science and Energy Engineering Foshan UniversityFoshan 528000China

Superhydrophobic coatings have been considerably used in corrosion and its protection of metallic *** the comprehensive performance(hydrophobicity,bonding strength,and corrosion resistance,etc.)of the top coating may be highly dependent on the physical and chemical properties of the primer or under ***,an integrated superhydrophobic polypropylene(PP)coating was fabricated on the micro-arc oxidized Mg substrate via one-step *** morphologies and chemical compositions of the composite coating were examined through Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD),and field-emission scanning electron microscopy(FESEM)together with X-ray photoelectron spectroscopy(XPS).The surface wettability of the coating was determined by contact angle and sliding *** corrosion-resistant performance was evaluated via electrochemical and immersion *** results showed that the hybrid coating possessed micron-scaled granular structure on the surface with a high water contact angle of 167.2±0.8°and a low water sliding angle of 2.7±0.5°.The corrosion resistance of superhydrophobic coating was obviously enhanced with a low corrosion current density of 8.76×10^(−9)A/cm^(2),and the coating still maintained integrity after 248 h of immersion in 3.5wt%NaCl aqueous *** MAO coating provides better adhesion of PP to the ***,the superhydrophobic coating exhibited superior bonding strength,corrosion resistance and durability.

关键词： Magnesium alloy Corrosion resistance Superhydrophobicity Bonding strength Polymer coating

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Corrosion Resistance and Durability of Superhydrophobic Coating on AZ31 Mg Alloy via One-Step Electrodeposition

引用

Acta Metallurgica Sinica(English Letters) 2021年第1期34卷 25-38页

作者： zheng-zheng Yin Zhao-Qi Zhang Xiu-Juan Tian zhen-lin wang Rong-Chang Zeng Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China College of Materials Science and Engineering Chongqing University of TechnologyChongqing 400065China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

To enhance durability and adhesion of superhydrophobic surface,an integrated superhydrophobic calcium myristate(Ca[CH3(CH2)12COO]2)coating with excellent corrosion resistance was fabricated on AZ31 magnesium(Mg)alloy via one-step electrodeposition ***-emission scanning electron microscopy,Fourier transform infrared spectrometry and X-ray photoelectron spectroscopy as well as X-ray diff raction were employed to investigate the surface characteristics(morphology,composition and structure)of the *** of the coating was evaluated by means of contact and sliding ***,potentiodynamic polarization,electrochemical impedance spectroscopy and hydrogen evolution tests were conducted to characterize the corrosion *** indicated that the coating exhibited super-hydrophobicity with large static water contact angle(CA)and small sliding angle of 155.2°±1.5°and 6.0°±0.5°,respectively,owing to spherical rough structure and low surface energy(7.01 mJ m^(-2)).The average hydrogen evolution rate(HERa)and corrosion current density(icorr)of the coated sample were 5.3μL cm^(-2)h^(-1) and 5.60×10^(-9)A cm^(-2),about one and four orders of magnitude lower than that of AZ31 substrate,respectively,implying the excellent corrosion *** CA of the coating remained 155.6°±0.9°after soaking for 13 days,showing the super-hydrophobicity and stability of the ***,the large critical load(5004 mN)for the coating designated the outstanding adhesion to the substrate by nano-scratch test.

关键词： Magnesium alloy Electrodeposition Durability Super-hydrophobicity Adhesion Corrosion resistance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Corrosion resistance of Ca-P coating induced by layer-by-layer assembled polyvinylpyrrolidone/DNA multilayer on magnesium AZ31 alloy

引用

Frontiers of Materials Science 2021年第3期15卷 391-405页

作者： zhen-Yu ZHANG Duo wang Lu-Xian LIANG Shen-Cong CHENG Lan-Yue CUI Shuo-Qi LI zhen-lin wang Rong-Chang ZENG College of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266590China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China College of Materials Science and Engineering Chongqing University of TechnologyChongqing 400065China

A hydrothermal deposition method was utilized to fabricate Ca-P composite coating induced by the layer-by-layer(LbL)assembled polyvinylpyrrolidone/deoxyribonucleic acid(PVP/DNA)_(20) multilayer on AZ31 *** surface morphology and compositions were characterized by SEM,EDS,FTIR and ***,the corrosion resistance and degradation behavior of the coating were tested via electrochemical polarization,impedance spectroscopy and immersion *** show that the main components of Ca-P coatings are hydroxyapatite,Ca_(3)(PO_(4))_(2) and Mg_(3)(PO_(4))_(2)·nH_(2)*** LbL-assembled DNA and PVP promote the adsorption of Ca-P deposits on the sample surface,and structures and functional groups of the polyelectrolyte in the outermost layer are the primary influencing factor for the induction of the Ca-P *** groups have the best biomineralization effect among all related functional *** enhanced corrosion resistance and adhesion highlight a promising use of(PVP/DNA)_(20)-induced Ca-P coatings in the field of biomedical magnesium alloys.

关键词： magnesium alloy biomaterial corrosion layer-by-layer assembly Ca-P coating

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Treating both wastewater and excess sludge with an innovative process

引用

Journal of Environmental Sciences 2003年第6期15卷 749-756页

作者： HE Sheng-bing, wang Bao-zhen, wang lin, JIANG Yi-feng (School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. School of Municipal & Environmental Engineering Harbin Institute of Technology Harbin 150090 Chin

The innovative process consists of biological unit for wastewater treatment and ozonation unit for excess sludge treatment. An aerobic membrane bioreactor(MBR) was used to remove organics and nitrogen, and an anaerobic reactor was added to the biological unit for the release of phosphorus contained at aerobic sludge to enhance the removal of phosphorus. For the excess sludge produced in the MBR, which was fed to ozone contact column and reacted with ozone, then the ozonated sludge was returned to the MBR for further biological treatment. Experimental results showed that this process could remove organics, nitrogen and phosphorus efficiently, and the removals for COD, NH 3-N, TN and TP were 93.17%, 97.57%, 82.77% and 79.5%, respectively. Batch test indicated that the specific nitrification rate and specific denitrification rate of the MBR were 1.03 mg NH 3-N/(gMLSS·h) and 0.56 mg NOx-N/(gMLSS·h), and denitrification seems to be the rate-limiting step. Under the test conditions, the sludge concentration in the MBR was kept at 5000—6000 mg/L, and the wasted sludge was ozonated at an ozone dosage of 0.10 kgO 3/kgSS. During the experimental period of two months, no excess sludge was wasted, and a zero withdrawal of excess sludge was implemented. Through economic analysis, it was found that an additional ozonation operating cost for treatment of both wastewater and excess sludge was only 0.045 RMB Yuan(USD 0.0054)/m 3 wastewater.

关键词： wastewater treatment excess sludge aerobic membrane bioreactor(MBR) anaerobic reactor ozonation zero withdrawal of excess sludge

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A novel approach to treat combined domestic wastewater and excess sludge in MBR

引用

Journal of Environmental Sciences 2003年第5期15卷 674-679页

作者： HE Sheng bing, wang Bao zhen, wang lin, JIANG Yi feng, ZHANG Li\|qiu (School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 Chin

Domestic wastewater was treated by combined anaerobic biofilm aerobic membrane bioreactor(MBR) process, and part biomass in MBR was withdrawn to treat with ozone, then the ozonated sludge was returned to anaerobic inlet. In aerobic MBR, MLSS and DO were controlled at 3000—3500 mg/L and 0 8 mg/L respectively. Comparing the experimental results of two stages, it was noticed that ozonation did not affect the removal efficiency for organics but had a significant influence on the removals of NH 3 N and TN. During the ozonation period of two months, no excess sludge was wasted, and a zero sludge yield was obtained.

关键词： combined anaerobic biofilm aerobic membrane(MBR) domestic wastewater ozonation excess sludge sludge yield

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Corrosion resistance and antibacterial effects of hydroxyapatite coating induced by polyacrylic acid and gentamicin sulfate on magnesium alloy

引用

Frontiers of Materials Science 2019年第1期13卷 87-98页

作者： Xiao-Jing JI Qiang CHENG Jing wang Yan-Bin ZHAO Zhuang-Zhuang HAN Fen ZHANG Shuo-Qi LI Rong-Chang ZENG zhen-lin wang College of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266590China College of Materials Science and Engineering Chongqing University of TechnologyChongqing 400065China

Magnesium(Mg)alloys have attracted considerable research attention as potential biocompatible implant ***,the major barriers to the extended use of such medical devices are the possibility of high corrosion rate and implantassociated *** solve them,a novel polyacrylic acid(PAA)/gentamicin sulfate(GS)-hydroxyapatite(HAp)coating was synthesized by a one-step hydrothermal deposition *** of functional coatings were investigated by SEM,FTIR and *** properties of samples were evaluated by electrochemical and hydrogen evolution *** activities of the coatings against Staphylococcus aureus(***)were measured by the plate-counting *** showed that the as-prepared HAp coating with dense and flawless morphologies could not only enhance the corrosion resistance of Mg alloys,but also improve the adhesion strength between the HAp coating and the *** addition,the induction of the apatite coating during immersion confirmed the excellent mineralization ability of the HAp ***,the obtained HAp coati ng possessed antibacterial properties and could prolong the release of ***,the PAA/GS-HAp coated Mg alloy could serve as a better candidate for biomedical applications with good anti-corrosion and antibacterial properties.

关键词： magnesium alloy corrosion resistance antibacterial performance drug release hydroxyapatite coating

来源：

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

Corrosion Resistance of Silane-Modified Hydroxyapatite Films on Degradable Magnesium Alloys

引用

Acta Metallurgica Sinica(English Letters) 2018年第2期31卷 180-188页

作者： Yan-Bin Zhao Li-Qian Shi Lan-Yue Cui Chang-Lei Zhang Shuo-Qi Li Rong-Chang Zeng Fen Zhang zhen-lin wang College of Materials Science and Engineering Shandong University of Science and Technology State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology Shandong University of Science and Technology College of Materials Science and Engineering Chongqing University of Technology

A polymethyltrimethoxysilane（PMTMS）/hydroxyapatite（HA） hybrid coating was successfully fabricated on a magnesium alloy by hydrothermal treatment and immersion method. The microstructure and composition of the coating were characterized by using X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron *** physical properties were investigated using scratch testing. At the same time, the corrosion resistance was evaluated via electrochemical and immersion tests. The results demonstrated that the corrosion resistance of the silane hybrid coating was significantly enhanced compared with the naked magnesium alloy. Especially, the corrosion current density of the PMTMS/HA magnesium alloy was three orders of magnitude lower than that of the bare material.

关键词： Magnesium alloys Silane Hydroxyapatite Corrosion resistance Biomaterial

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Corrosion resistance of a superhydrophobic micro-arc oxidation coating on Mg-4Li-1Ca alloy

引用

Journal of Materials Science & Technology 2017年第11期33卷 1263-1271页

作者： Lan-Yue Cui Han-Peng Liu Wen-Le Zhang Zhuang-Zhuang Han Mei-Xu Deng Rong-Chang Zeng Shuo-Qi Li zhen-lin wang College of Materials Science and Engineering Shandong University of Sdence and Technology Qingdao 266590 China College of Civil Engineering and Architecture Shandong University of Science and Technology Qingdao 266590 China College of Materials Science and Engineering Chongqing University of Technology Chongqing 400065 China

A micro-arc oxidation（MAO）/zinc stearate（ZnSA） composite coating was fabricated via MAO processing and subsequent sealing with electrodeposition of a superhydrophobic ZnSA. The surface morphologies,chemical composition and corrosion resistance of the coatings were investigated using field-emission scanning electron microscopy, Fourier transform infrared, X-ray diffraction and electrochemical and hydrogen evolution measurements. Results indicated that the MAO coating was efficiently sealed by the following superhydrophobic ZnSA coating. The MAO/ZnSA composite coating significantly enhanced the corrosion resistance of Mg alloy Mg-4 Li-1 Ca due to its superhydrophobic function. Additionally, corrosion mechanism was suggested and discussed for the composite coating.

关键词： Magnesium alloys Micro-arc oxidation Superhydrophobic coating Corrosion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

In vitro corrosion resistance of layer-by-layer assembled polyacrylic acid multilayers induced Ca–P coating on magnesium alloy AZ31

引用

Bioactive Materials 2020年第1期5卷 153-163页

作者： Lan-Yue Cui Shen-Cong Cheng Lu-Xian Liang Jing-Chao Zhang Shuo-Qi Li zhen-lin wang Rong-Chang Zeng College of Materials Science and Engineering Shandong University of Science and TechnologyQingdao266590China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450002China College of Materials Science and Engineering Chongqing University of TechnologyChongqing400065China

Biodegradable magnesium(Mg)-based alloys have aroused great concern owing to their promising characteristics as temporary implants for orthopedic *** their undesirably rapid corrosion rate under physiological conditions has limited the actual clinical *** study reports the use of a novel biomimetic polyelectrolyte multilayer template,based on polyvinylpyrrolidone(PVP)and polyacrylic acid(PAA)via layerby-layer(LbL)assembly,to improve the corrosion resistance of the *** characterization techniques(field-emission scanning electron microscopy,Fourier transform infrared(FTIR)spectrophotometer and X-ray diffractometer)confirmed the formation of biomineralized Ca–P coating on AZ31 *** hydrogen evolution and electrochemical corrosion tests demonstrated that the corrosion protection of the polyelectrolyte-induced Ca–P coating on AZ31 *** formation mechanism of biomineralized Ca–P coating was proposed.

关键词： Magnesium alloy Layer-by-layer assembly Biomineralization Calcium phosphate Coating Corrosion

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：