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国家自然科学基金(50972094)

作品数:5 被引量:7H指数:2
相关作者:刘小珍宋玲玲王刚朱旭倩孙晓雯更多>>
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发文基金:国家自然科学基金上海市教育委员会重点学科基金上海市科学技术委员会资助项目更多>>
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Ni-TiB_2-Nd_2O_3复合镀层的性能研究被引量:2
2011年
采用TiB2和Nd2O3微粒作为共掺杂微粒,用电沉积法制备Ni-TiB2-Nd2O3复合镀层。用电感耦合等离子体-原子发射光谱法(ICP-AES)测定镀层中Ti、Nd元素的质量百分含量(wt%);分别研究镀层中Nd2O3微粒的含量对镀层的硬度、磨损质量和摩擦系数等的影响;用X衍射法(XRD)对Ni-TiB2-Nd2O3复合镀层进行了表征。与Ni-TiB2复合镀层相比,Ni-TiB2-Nd2O3复合镀层具有更高的硬度、更低的磨损质量和更小的摩擦系数。Ni-TiB2-Nd2O3复合镀层的磨损质量是Ni-TiB2复合镀层的磨损质量的1/1.51。Ni-TiB2-Nd2O3复合镀层的摩擦系数为0.600,Nd2O3微粒可使镀层的摩擦系数减小。Ni-TiB2-Nd2O3复合镀层的耐磨性与该复合镀层中Nd2O3的含量相关。
刘小珍许路坤宋玲玲孙晓雯
关键词:电沉积复合镀层显微硬度
Preparation and performance of electrodeposited Ni-TiB_2-Sm_2O_3 composite coatings
2010年
Sm2O3 and TiB2 were used as codeposited particles in electrodeposition Ni-TiB2-Sm2O3 composite coatings to improve its performance. Ni-TiB2-Sm2O3 composite coatings were electrodeposited in the nickel sulfate,hexadecylpyridinium bromide and cetyltrimethylammonium bromide solution containing TiB2 and Sm2O3 particles. The content of codeposited Sm2O3 in the composite coating was controlled by changing the concentrations of Sm2O3 particles in the solution. The composite coatings were characterized with X-ray diffraction(XRD) and inductively coupled plasma-atomic emission spectrometer(ICP-AES) . The effects of Sm2O3 content on microhardness,wear weight loss and friction coefficient of composite coatings were investigated,respectively. The microhardness of the Ni-TiB2-Sm2O3 composite coatings was 19.35%,16.58%,2.03% higher than that of the Ni coating,Ni-Sm2O3 and Ni-TiB2 composite coatings,respectively. The wear weight loss of the Ni-TiB2-Sm2O3 composite coatings was 7,2.33,1.22 times lower than that of the Ni coating,Ni-Sm2O3 and Ni-TiB2 composite coatings,respectively. The friction coefficient of the Ni coating,Ni-Sm2O3,Ni-TiB2 and Ni-TiB2-Sm2O3 composite coatings were 0.712,0.649,0.850 and 0.788,respectively. The loading-bearing capacity and the wear-reducing effect of the Sm2O3 particles were closely related to the content of Sm2O3 particles in the composite coatings.
刘小珍罗一凡宋玲玲孙晓雯
关键词:ELECTRODEPOSITIONNICKELSM2O3TIB2
Synthesis and characterization of yttrium and antimony codoped SnO_2 conductive nanoparticles被引量:2
2010年
Y was used as a dopant in preparing conductive powder to improve its performance. Y and Sb co-doped SnO2 conductive nanoparticles were prepared by the complexation-coprecipitation method with Sn,Sb2O3 and Y2O3 as the raw materials. Crystal phase,thermal behavior and structure of the prepared conductive nanoparticles were characterized by X-ray diffraction(XRD) ,thermal analysis(TG-DSC) ,Fourier transform infrared(FTIR) and transmission electron microscopy(TEM) techniques,respectively. The Y and Sb co-doped SnO2 conductive nanoparticles with a structure of tetragonal rutile had intense absorption in 4000-2500 cm-1,and the diameter ranged from 10 to 30 nm. The resistivity of Y and Sb co-doped SnO2 conductive nanoparticles was as low as 0.09 Ω·cm which was 4.6 times lower than that of Sb doped SnO2 conductive nanoparticles.
刘小珍李勇宋玲玲肖含章
关键词:DOPINGSPECTRA
Synthesis and Characterization of Yttrium and Antimony Doped SnO2 Conductive Nanoparticles
<正>Antimony doped tin oxide have received great attention for their excellent properties in the solidstate che...
LIU Xiaozhen~(1*),WANG Gang~(1,2),SONG Lingling~3,XIAO Hanzhang~1 (1.Department of Chemical Engineering,Shanghai Institute of Technology,Shanghai 200235,PR China
关键词:DOPINGSPECTRA
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Preparation and Electrochemical Performance of Praseodymium Doped SnO2 Nanoparticles as Negative Electrode Material of Lithium-ion Battery
Pr doped SnO2 nanoparticles as negative electrode material of lithium-ion battery are synthesized by the compl...
Liu Xiaozhen
通孔阳极氧化铝膜的制备及其性能的研究被引量:1
2012年
在15%H2SO4阳极氧化液中添加硝酸镨制备阳极氧化铝(AAO)膜以提高AAO膜的性能,采用化学腐蚀和微波处理相结合的方法,去除AAO膜的阻挡层,制备通孔的AAO膜。分别研究镨的添加量、氧化电压对AAO膜的厚度和硬度的影响及腐蚀时间、微波处理时间分别对AAO膜的阻挡层的影响,分别用能谱和扫描电镜等对AAO膜进行了表征。在15%H2SO4阳极氧化液中添加硝酸镨,制备出的AAO膜具有更大的厚度和硬度,当氧化电压为23V时,在15%H2SO4+0.14Pr g.L-1混合液中制备的AAO膜的厚度和硬度分别为162μm和275.1HV,与在阳极氧化液为15%H2SO4溶液中制备的AAO膜的厚度和硬度(150μm和224.8HV)相比,分别提高8.0%和22.4%。当氧化电压在19~23V范围时,AAO膜的厚度随着氧化电压的增大而增加;AAO膜的硬度随着氧化电压的增大而减小。将AAO膜在35℃和5%H3PO4溶液中腐蚀13min,再用超声波处理10min,可得到通孔的AAO膜。腐蚀后AAO膜表面絮状物为Al2O3。
刘小珍刘兆鑫陈捷王刚宋玲玲王聪
关键词:阳极氧化铝能谱
应用技术型化学化工本科人才培养体系的创新与实践
本文从化学化工类学科发展趋势与基本特征为出发点,以培养应用型本科工程能力和实验动手为核心,研究了应用技术型化学化工本科人才培养体系。
刘小珍徐瑞云陈桂娥姚跃良唐意红
关键词:应用技术型化工
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铬-镧镀层的制备及其光谱性能被引量:2
2011年
用电沉积法分别采用直流电源和脉冲电源制备铬-镧镀层(dc)和铬-镧镀层(pulse)。分别用发射光谱法、X衍射法、能谱法和扫描电镜法等对镀层进行表征。铬-镧镀层(dc)为非晶态镀层,铬-镧镀层(pulse)中含有晶态的镧和碳化铬。铬-镧镀层(dc)和铬-镧镀层(pulse)的硬度分别为860.3和930.2 HV,比铬镀层的硬度(774.0 HV)分别提高了11.15%和20.18%;铬-镧镀层(dc)和铬-镧镀层(pulse)的磨损质量是铬镀层的磨损质量的1/1.29和1/2.25。铬镀层、铬-镧镀层(dc)和铬-镧镀层(pulse)的磨擦系数分别为0.884,0.640和0.648。采用脉冲电源,可提高镀层的耐磨性和硬度,铬-镧镀层(pulse)的磨损质量是铬-镧镀层(dc)的磨损质量的1/1.75,铬-镧镀层(pulse)的硬度比铬-镧镀层(dc)的硬度提高了8.13%。
刘小珍王刚宋玲玲李昕朱旭倩
关键词:电沉积镀层能谱
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