Relation between Doping and Texture and Property of Tantalum Bar and Wire

• Published in: Journal of Wuhan University of Technology. Materials science edition 2009-04, Vol.24 (2), p.278-282
• Main Authors: Wan, Qingfeng, Wang, Dezhi, Tian, Miao, Zhao, Bing, Chen, Lin
• Format: Article
• Language: English
• Subjects: Chemistry and Materials Science; Materials Science; Metallurgy; Mineralogy; 兴奋剂; 力学性能测试; 掺杂量; 电子探针分析; 透射电镜观察
• ISSN: 1000-2413; 1993-0437
• DOI: 10.1007/s11595-009-2278-y

Relation between doping and texture and property of tantalum bar and wire was carefully investigated by optical microscope, SEM fractograph, electron microprobe analysis, density test. observation of TEM and mechanical property test at room temperature. It is illustrated that the grain of tantalum bar after sintering reduces with the increasing of dopant quantity, and the effect of dopant Ce on reduction of the grain is more obvious than that of dopant Ge, even that sintering is be- coming insufficient and the density of tantalum bar tends to be lower with the increaseing of dopant Ce The recrystallization temperature of tantalum wire increases and the grain of texture reduces with the increaseing of dopants quantity. The tensile strength of tantalum wire at room temperature increases with the increasing of dopants quantity, while its elongation decreases with the increase of dopant Ge quantity and rises with theincrease of dopant Ce quantity. And the strengthening effect of dopant Ce is clearer than that of dopant Ge.