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of NiCrSiB alloy powder and tantalum (Ta) powder was used as laser clad material to improve abrasive wear resistance of the Ni-based coating. The microstructure and wear resistance of the coating were......
comprehensively investigated via this method. Dense BxC-TaB2 ceramics with refined microstructure were obtained from submicro tantalum carbide and boron powder mixtures at 1800?C/50 MPa/5 min by spark plasma......
Jing, YANG Hai-lin, RUAN Jian-ming, JIE Yun-feng (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: Trabecular metal (Porous tantalum) was prepared... spectra of porous tantalum in different places 2.3 孔隙结构及形貌 泡沫浸渍法制备的多孔钽主要应用于人体骨组织的替代,用扫描电镜观察对比分析多孔钽样品与人体骨的孔隙形貌.图3(a)所示为多孔钽微观形貌图,由图3(a)可知:制备的多孔钽具有三维连通近球形的孔隙形貌且无明显的尖角,这种孔隙结构避免了因不规则孔尖锐部分应力集中造成的强度和塑性的......
and SEM. The results show that Ta organic solvent forms intermediates, namely tantalum oxide fluoride (TaO2F) and Ta2O5, and Ta finally turns into TaC after 1500℃ heat treated. The calculated thermodynamic... and dislocation structures in tantalum carbide: deformation at low and intermediate homologous temperatures[J]. Acta Metal Mater, 1994, 42(7): 2291-2301. [5]Chen Y J, Li J B, Wei Q M, et al. Preparation......
rhenium, the segregation coefficients of the elements alter insignificantly with the addition of carbon. The segregation behavior of rhenium, tungsten and tantalum become more severe with boron... and cobalt segregate to the dendrite core. Elements such as tantalum, molybdenum and aluminum segregate to the interdendritic region. The segregation coefficient of nickel and chromium is close to unity......
University, Changsha 410083, China) Abstract: Porous ruthenium oxide coatings as cathode material of hybrid capacitor were prepared on tantalum subs-trate by electrodeposition method. Change... of tantalum substrate (a) and fresh RuO2 thin film (b) heat-treated at 100℃ with scanning speed of 50mV/s in 0.5mol/L H2SO4 3 结论 1) 采用直流电沉积的方法制备了钽基氧化钌纳米多孔涂层. 2) 涂层中钌化合物以非晶态形式存在, 涂层具有纳米孔隙结构......
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that the tantalum bone plates with porous structure are also emerging as a new fracture internal fixation implants.The reduction of the stress shielding is verified to be useful to accelerate bone fracture......
Fe3O4 films prepared by DC magnetron reactive sputtering with a tantalum(Ta) buffer layer was investigated. Primary emphasis is placed on the structural impact on its magnetic properties. The experimental......
capacity is 69.5mF·V/g, the loss is 11.25%, leakage current (K) is 1.8×10-4 μA/(μF·V), and its electrical properties are better than those of the national standard of FTa16-300 tantalum powder for capacitor... of tantalum and niobium electronic materials[J]. The Chinese Journal of Nonferrous Metals, 2004, 14(S1): 291-300. [2]李春光, 钟景明, 高勇, 等. 铌电容器及其电介质的稳定性[J]. 中国有色金属学报, 2003, 13(6): 1401-1406. LI Chun-guang, ZHONG......
