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Progress in Natural Science:Materials International 2015年第5期25卷 414-418页

作者： Shun Guo Qingkun Meng xiaonong cheng Xinqing Zhao Institute for Advanced Materials Jiangsu University School of Materials Science and Engineering Beihang University

A metastable P-type Ti-30Nb-lMo-4Sn alloy with ultralow elastic modulus and high strength was *** the solution treatment state,the Ti-30Nb-1Mo-4Sn alloy possesses low yield strength of about 130 MPa owing to the presence of the coarse α " martensitic *** a cold rolling and annealing process,the martensitic transformation from β to α" is significantly retarded due to the inhibitory effect of grain boundaries and *** a result,the metastable β phase with low total amount of β-stabilizers is retained to room temperature,giving rise to a low modulus of 45 ***,nano-sized a precipitates and dislocation tangles play a key role in strengthening the Ti-30Nb-1Mo-4Sn alloy,resulting in a high tensile strength of ~ 1000 *** low elastic modulus and high strength,the metastable P-type Ti-30Nb-1Mo-4Sn alloy could be a potential candidate for biomedical materials.

关键词： Metastable β Ti alloy β stability Martensitic transformation Low modulus High strength

Preparation and Characterization of Nucleus/Shell TiO_2/HAP Complex Nanophotocatalyst

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Journal of Materials Science & Technology 2007年第1期23卷 123-126页

作者： Hongfei LIU xiaonong cheng Juan YANG Xuehua YAN Hebin SHI School of Materials Science and Engineering Jiangsu University Zhenjiang 212013 China School of Materials Science and Engineering Wuhan Institute of Chemical Technology Wuhan 430074 China

A rapid and more efficient method was developed to prepare nucleus/shell titania/hydroxyapatite （TiO2/HAP） complex nanophotocatalyst. Hydroxyapatite （5 μm） which had been dissolved with 0.1 mol/L HCI was formed on the surface of the nanosized anatase titania powders by increasing the pH value of the solution at 90℃ in the water bath for only several hours .The microstructure and morphology of the resulting sample were investigated by X-ray diffraction （XRD）, Fourier-transform infrared spectroscopy （FT-IR）, scanning electron microscopy （SEM）, energy dispersive spectrum （EDS） and atomic force microscope （AFM）. The results indicated that nucleus/shell structural TiO2/HAP was formed in our experiments, and the thickness of the coating layer was about 5 nm. Photocatalytic decomposition of methyl orange was utilized to test the photocatalysis of the resulting samples and the result was compared with that of pure anatase titania powders （about 20 nm）. It was shown that the photocatalytic activity of the sample was not decreased due to the coating of HAP.

关键词： TiO2/HAP Nucleus/Shell structure Photocatalysis

Preparation of Negative Thermal Expansion ZrW_2O_8 Powders and Its Application in Polyimide/ZrW_2O_8 Composites

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Journal of Materials Science & Technology 2010年第7期26卷 665-668页

作者： Juan Yang Vongsen Yang Qinqin Liu Cuifang Xu xiaonong cheng School of Materials Science and Engineering Jiangsu University Zhenjiang 212013 China

Negative thermal expansion （NTE） ZrW2O8 powders were prepared by step-by-step solid-state reaction with ZrO2 and WO3 powders. The coefficient of thermal expansion （CTE） of the as-prepared ZrW208 was around -5.08×10^-6 K^-1 at 20-700℃. Different amounts of ZrW208 powders were added in BTDA-ODA polyamic acid to form polyimide/ZrW2O8 composites （PI/ZrW2O8）. With the increment of ZrW2O8, experimental results show that ZrW2O8 powders can significantly enhance the thermal stability of the composites, and reduce the thermal expansion. A 50 wt pct ZrW2O8 addition can give rise to a 31% reduction of CTE. It is suggested that the PI/ZrW2O8 composites have potential applications in high performance microelectronic devices.

关键词： Negative thermal expansion ZrW2O8 Polyimide Composite Coefficient of thermal expansion

Tensile deformation behavior of a solution-treated Ti-33Nb-4Sn alloy with a dual β and α" phases under cyclic loading-unloading

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Progress in Natural Science:Materials International 2020年第1期30卷 80-85页

作者： Wen Ma Shun Guo Guanglei Liu Qingkun Meng Rui Luo Dongsheng Li Ching-Tun Peng xiaonong cheng School of Materials Science and Engineering Jiangsu University GRINM Bohan (Beijing) Publisher Co LtdGRINM Group CoLtd School of Materials Science and Engineering China University of Mining and Technology

The cyclical tensile deformation behavior of a solution-treated(ST) Ti-33Nb-4Sn alloy with a dual β and α "phases was investigated in this *** results indicated that the ST Ti-33Nb-4Sn alloy exhibited different deformation behavior during two different loading-unloading cycles,and that the deformation behavior was closely related to the characteristics of stress-induced martensitic(SIM) transformation,mainly including the extent and the reversibility of SIM *** the first cycle,the extensive and incompletely reversible SIM transformation occurred,resulting in notable "double yielding" during loading and residual permanent strain after *** the second cycle,however,a slight and reverse SIM transformation,together with pure elastic deformation,taken place concurrently,giving rise to a recoverable nonlinear deformation *** results also imply that by tailing the characteristics of SIM transformation,the Ti-based alloys with a mixture of α" and β phases might perform recoverable deformation and possess a promising potential for engineering applications.

关键词： Titanium alloys β-type Deformation behavior β and α" phases

Band Engineering and Morphology Control of Oxygen‑Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

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Nano-Micro Letters 2021年第3期13卷 95-106页

作者： Yunyan Wu Pan Xiong Jianchun Wu Zengliang Huang Jingwen Sun Qinqin Liu xiaonong cheng Juan Yang Junwu Zhu Yazhou Zhou Key Laboratory for Soft Chemistry and Functional Materials Ministry of EducationNanjing University of Science and TechnologyNanjing 210094People’s Republic of China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013People’s Republic of China Institute of Nuclear Science and Technology Sichuan UniversityChengdu 610064People’s Republic of China

Graphitic carbon nitride(g-C3N4)-based photocatalysts have shown great potential in the splitting of ***,the intrinsic drawbacks of g-C3N4,such as low surface area,poor diffusion,and charge separation efficiency,remain as the bottleneck to achieve highly efficient hydrogen ***,a hollow oxygen-incorporated g-C3N4 nanosheet(OCN)with an improved surface area of 148.5 m2 g^−1 is fabricated by the multiple thermal treatments under the N2/O2 atmosphere,wherein the C–O bonds are formed through two ways of physical adsorption and *** physical characterization and theoretical calculation indicate that the O-adsorption can promote the generation of defects,leading to the formation of hollow morphology,while the O-doping results in reduced band gap of *** optimized OCN shows an excellent photocatalytic hydrogen evolution activity of 3519.6μmol g^−1 h^−1 for~20 h,which is over four times higher than that of g-C3N4(850.1μmol g^−1 h^−1)and outperforms most of the reported g-C3N4 catalysts.

关键词： Graphitic carbon nitride nanosheet Hollow morphology Oxygen incorporating Multiple thermal treatment Photocatalytic hydrogen evolution

Tripotassium citrate monohydrate derived carbon nanosheets as a competent assistant to manganese dioxide with remarkable performance in the supercapacitor

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Frontiers of Chemical Science and Engineering 2022年第3期16卷 420-432页

作者： Wenjing Zhang Xiaoxue Yuan Xuehua Yan Mingyu You Hui Jiang Jieyu Miao Yanli Li Wending Zhou Yihan Zhu xiaonong cheng School of Materials Science and Engineering Jiangsu UniversityZhenjiang212013China Institute for Advanced Materials Jiangsu UniversityZhenjiang212013China

Production cost,capacitance,and electrode materials safety are the key factors to be concerned about for *** this work,a type of carbon nanosheets was produced through the carbonization of tripotassium citrate monohydrate and nitric ***,a well-designed manganese dioxide/carbon nanosheets composite was synthesized through hydrothermal *** carbon nanosheets served as the substrate for growing the manganese dioxide,regulating its distribution,and preventing it from inhomogeneous dimensions and severe *** manganese dioxide nanosheets grew vertically on the numerous functional groups generated on the surface of the carbon nanosheets during *** synergistic combination of carbon nanosheets and manganese dioxide tailors the electrochemical performance of the composite,which benefits from the excellent conductivity and stability of carbon *** carbon nanosheets derived from tripotassium citrate monohydrate are conducive to the remarkable performance of manganese dioxide/carbon nanosheets ***,an asymmetric supercapacitor with active carbon as the cathode and manganese dioxide/carbon nanosheets as the anode was assembled,achieving an outstanding energy density of 54.68 Wh·kg^(−1) and remarkable power density of 6399.2 W·kg^(−1) superior to conventional lead-acid *** 10000 charge-discharge cycles,the device retained 75.3%of the initial capacitance,showing good cycle *** assembled asymmetric supercapacitors in series charged for 3 min could power a yellow light emitting diode with an operating voltage of 2 V for 2 *** study may provide valuable insights for applying carbon materials and manganese dioxide in the energy storage field.

关键词： carbon nanosheets manganese dioxide asymmetric supercapacitors energy density power density

Super-conductive silver nanoparticles functioned three-dimensional CuxO foams as a high-pseudocapacitive electrode for flexible asymmetric supercapacitors

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Journal of Materiomics 2021年第1期7卷 156-165页

作者： Hui Jiang Xuehua Yan Le Wang xiaonong cheng Jieyu Miao Mingyu You Yihan Zhu Jianmei Pan School of Materials Science and Engineering Jiangsu UniversityZhenjiang212013JiangsuChina Institute for Advanced Materials Jiangsu UniversityZhenjiang212013JiangsuChina Institute of Green Materials and Metallurgy Jiangsu UniversityZhenjiang212013JiangsuChina

Copper oxide has aroused great concern in energy storage fields due to its properties of high theoretical capacitance,low cost and mild ***,its wide application still remains challenges owing to its poor electrical conductivity and unstable cycling ***-free foam electrodes possess abundant porous structures and high specific surface area,which could get good contact with ***,we demonstrate Ag nanoparticles decorated CuxO nanowires grown spontaneously on copper foam(CF)electrode for asymmetric *** skeleton structure of CF provides large amounts of active sites for the growth of CuxO ***,Ag nanoparticles further decrease the internal resistance and enhance the electrochemical ***/CuxO/CF-40 electrode presents a high area specific capacitance of 1192 mF cm^(-2)at 2 mA cm^(-2)and the influence of surface capacitance-dominated process and diffusion-controlled process are discussed in ***,the energy density of the as-prepared asymmetric supercapacitor(ASC)reaches 46.32 mWh cm^(-2)at a power density of 3.00 mW cm^(-2).A 2V LED is lighted successfully by two ASC in *** work provides a new strategy to prepare low internal resistance and binder-free flexible Ag/CuxO/CF electrode,which demonstrates a good potential application in flexible supercapacitors or other wearable electronic devices.

关键词： Binder-free electrode CuxO nanowire arrays Cu foam Pseudocapacitance contribution Asymmetric supercapacitor

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微注塑成型过程塑料熔体流动的偏移行为

化工学报 2015年第6期66卷 2329-2335页

作者：郭幼丹程晓农集美大学机械与能源工程学院福建厦门361021 江苏大学材料科学与工程学院江苏镇江212013

采用集成式热电偶传感器温度测量系统和可视化全息示踪技术,对多型腔微注塑成型过程熔体流动前沿在型腔内的偏移现象进行观察和分析。结果表明,当注射速度为140~220 mm·s-1时,主流道内的塑料熔体前沿呈＂U型流＂状态分布,分流道内塑料... 详细信息

采用集成式热电偶传感器温度测量系统和可视化全息示踪技术,对多型腔微注塑成型过程熔体流动前沿在型腔内的偏移现象进行观察和分析。结果表明,当注射速度为140~220 mm·s-1时,主流道内的塑料熔体前沿呈＂U型流＂状态分布,分流道内塑料熔体前沿向上侧偏移;当注射速度为10~70 mm·s-1时,主流道塑料熔体前沿呈＂喷泉流＂状态分布,分流道熔体前沿向下侧偏移;当注射速度为80~120 mm·s-1时,主流道和分流道熔体前沿均没有明显的偏移。说明微注塑时注射速度不同,产生的剪切热也不同,熔体前沿偏移情况也不同。为此,引入非平衡流动系数λ,来判断熔体前沿的流动和偏移情况。

关键词：熔体偏移注射速度微注塑

Preparation of Sc2Mo3O12 and Characterization of its Negative Thermal Expansion Property

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Preparation of Sc2Mo3O12 and Characterization of its Negativ...

二次急冷淬火成形SAF2507双相不锈钢螺旋桨在SRB+IOB海水中的腐蚀行为

2012 China Functional Materials Technology and Industry Forum

作者： LI Jun cheng xiaonong ZHU Junjun School of Materials Science and Engineering Jiangsu University

Negative thermal expansion(NTE) material ScMoO was prepared by solid-state *** phase structure,morphology and the thermal stability of the obtained products were examined by powder X-ray diffraction(XRD),scanning electron microscopy(SEM) and thermogravimetric-differential thermal analysis(TG-DSC),*** study its negative thermal expansion property,two methods were *** is based on the in-situ XRD results and the thermal expansion coefficient(CTE) was calculated by the cell parameters obtained at different *** is based on the thermo-mechanical analysis(TMA) and the CTE was calculated by the length of ScMoO at different *** differences between these two methods were also discussed.

关键词： Sc2Mo3O12 Negative thermal expansion Cell parameter Thermo-mechanical analysis

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稀有金属材料与工程 2022年第6期51卷 2258-2266页

作者：郭幼丹程晓农集美大学海洋装备与机械工程学院福建厦门361021 江苏大学材料科学与工程学院江苏镇江212013

为了研究SAF2507双相不锈钢(SAF2507 DSS)螺旋桨叶片在含硫酸盐还原菌(SRB)和铁氧化菌(IOB)海水中的耐腐蚀性能,提出一种二次急冷淬火成形技术来成形SAF2507DSS螺旋桨叶片。同时根据螺旋桨叶片在不同二次急冷淬火成形温度下析出相的类... 详细信息

为了研究SAF2507双相不锈钢(SAF2507 DSS)螺旋桨叶片在含硫酸盐还原菌(SRB)和铁氧化菌(IOB)海水中的耐腐蚀性能,提出一种二次急冷淬火成形技术来成形SAF2507DSS螺旋桨叶片。同时根据螺旋桨叶片在不同二次急冷淬火成形温度下析出相的类型和析出规律,研究螺旋桨叶片在含SRB和IOB海水中的耐腐蚀性能。结果表明,当二次急冷淬火成形温度在700℃时,螺旋桨叶片表面析出少量的χ相;达到850℃时,χ相停止析出并完全转化成σ相,析出的σ相达到最大值;超过850℃时,析出的σ相开始急剧减少,到950℃时仅有少量的σ相析出。螺旋桨叶片在不同二次急冷淬火成形温度下,腐蚀电流密度、交流阻抗等电化学性能变化规律与螺旋桨叶片表层χ相和σ相的析出规律、以及χ相和σ相自身的耐腐蚀特征相吻合。二次急冷淬火成形温度在750~1050℃之间,螺旋桨叶片的耐腐蚀性能随热成形温度的升高呈增强-降低-增强规律变化,850℃时螺旋桨叶片的耐腐蚀性能最差。螺旋桨叶片二次急冷淬火成形后富Fe的表面特征,使得在SRB+IOB的作用下,螺旋桨叶片表面钝化膜被破坏,导致耐腐蚀性能降低。

关键词： SAF2507双相不锈钢螺旋桨叶片二次急冷淬火成形析出相耐腐蚀性能