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of nanocomposite material, and successfully prepared nanocomposite materials with nano-PbTiO3 covered on the surface of micron-Ni. According to the sample''s SEM-pictures, the core-shell can be observed plate microstructure, and it is uniform, tight, full and good. 关键词:process method; nanocomposite materials; sol-gel method; [全文内容正在添加中] ......
Properties of fluoride film and its effect on electroless nickel deposition on magnesium alloys LIU Xin-kuan(刘新宽)1, LIU Zi-li(刘子利)2, LIU Ping(刘 平)1, XIANG Yang-hui(向阳辉)3, HU Wen-bin(胡文斌)3, DING... 2009; accepted 2 September 2010 Abstract: The physical characteristics and microstructure of the fluoride film formed during activation were investigated using SEM, XPS and SAM, and its......
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Photocatalytic oxidation activity of titanium dioxide film enhanced by Mn non-uniform doping ZHANG Kai-jian(张开坚)1, 3, XU Wei(徐 伟)2, 4, LI Xin-jun(李新军)2, ZHENG Shao-jian(郑少健)2, XU Gang(徐 刚.... Each film was characterized by XPS, SEM, UV-vis spectrophotometry and electrochemistry workstation analysis. The activity of the photocatalyst was evaluated by the kinetics of photocatalytic......
制备方法对Ni-SiC镀层摩擦学性能的影响梁桂强1,崔立功2,朱永永3,夏法锋41. 滨州职业学院电气工程学院2. 滨州职业学院机械工程学院3. 重庆第二师范学院经济与工商管理系4. 东北石油大学机械科学与工程学院摘 要:采用直流电镀,脉冲电镀和超声波辅助脉冲电镀方法,在20钢表面制备Ni-SiC镀层.利用扫描探针显微镜(SPM),X射线衍射仪(XRD),扫描电镜(SEM),显微硬度计及摩擦磨损试验机研究制备方法对Ni-SiC镀层显微组织,成分及摩擦学性能的影响.结果表明,制备方法对Ni-SiC镀层表面形貌有很大影响,超声波辅助脉冲电镀镀层Ni晶粒和SiC微粒的平均粒径分别为94.5和46.8nm,其最大显微硬度为924.3Hv.直流电镀,脉冲电镀和超声波辅助脉冲电镀Ni-SiC镀层的摩擦系数平均值分......
in lowering of the friction coefficient and wear rates of hybrid nanocomposites. Key words: copper; carbon nanotubes (CNTs); SiC; microhardness; wear mechanisms; nanocomposite 1 Introduction Carbon nanotubes... the Archimedes principle. It is observed that the theoretical and experimental densities of hybrid nanocomposite reduce with increase in mass fraction of MWCNT for a given content of SiC. This can......
Analysis of the SiOx Film Microstructure on Al Substrate by APCVD Process WANG You-wen1,GAN Zheng-hao2,WO Yin-hua1,ZHANG Ji-liang1,LI Jian1 (1.Material Science and Engineering Department, Zhejiang... and further growth to form the thin film. The morphology, composition and microstructure of the film are characterized by SEM, XPS, XRD and HRTEM. The results show that the SiOx film comprises a majority......
基于RBF神经网络的Ni-SiC镀层磨损量预测彭绪山宁波大红鹰学院信息工程学院摘 要:采用脉冲电沉积法在45#钢表面制备Ni-SiC镀层.建立RBF神经网络模型预测镀层磨损量,利用扫描电镜(SEM)及X线衍射仪(XRD)研究镀层表面形貌及物相组成.结果表明:采用RBF神经网络预测误差最大值与最小值,分别为2.94%和1.45%;当电流密度为2A/dm2,SiC粒子的质量浓度为7g/L,镀液温度为50℃,Ni-SiC镀层表面较为平整,犁沟较浅;Ni-SiC镀层中存在Ni,SiC两相.关键词:RBF神经网络;Ni-SiC镀层;磨损量;......
纳米Ni-SiC复合涂层对TA15合金磨擦磨损性能的影响郭宝会,李海龙渭南师范学院数理学院摘 要:利用电镀技术在TA15合金表面上制备了纳米Ni-SiC复合涂层.研究了TA15合金基体及Ni-SiC复合涂层在室温和600℃时的磨损行为.结果表明,制备的Ni-SiC复合涂层致密,与基体结合较好,显微硬度要高于TA15合金的.室温时Ni-SiC复合涂层的平均摩擦系数比TA15合金基体的高,而在600℃时Ni-SiC复合涂层的平均摩擦系数要小于TA15合金的.600℃时Ni-SiC复合涂层的质量损失要低于TA15合金的,说明温度较高时Ni-SiC复合涂层具有较好的耐磨性.室温时TA15基体的磨损机制主要为黏着磨损,氧化磨损和摩擦磨损,而Ni-SiC复合涂层的磨损机制为摩擦磨损;600℃时TA15基体的主要磨......
纳米Ni-SiC复合涂层对TA15合金磨擦磨损性能的影响郭宝会,李海龙渭南师范学院数理学院摘 要:利用电镀技术在TA15合金表面上制备了纳米Ni-SiC复合涂层.研究了TA15合金基体及Ni-SiC复合涂层在室温和600℃时的磨损行为.结果表明,制备的Ni-SiC复合涂层致密,与基体结合较好,显微硬度要高于TA15合金的.室温时Ni-SiC复合涂层的平均摩擦系数比TA15合金基体的高,而在600℃时Ni-SiC复合涂层的平均摩擦系数要小于TA15合金的.600℃时Ni-SiC复合涂层的质量损失要低于TA15合金的,说明温度较高时Ni-SiC复合涂层具有较好的耐磨性.室温时TA15基体的磨损机制主要为黏着磨损,氧化磨损和摩擦磨损,而Ni-SiC复合涂层的磨损机制为摩擦磨损;600℃时TA15基体的主要磨......
