CORROSION AND MECHANICAL BEHAVIOR OF COPPER-NIOBIUM NANO-FILAMENTARY MICRO-COMPOSITES FOR HIGH PERFORMANCE ELECTRICAL CONDUCTOR WIRE

作     者：Y Choi1), T.W.Lim1) and S.I. Hong2) 1)Department of Metallurgical Engineering, Sunmoon University, Asan Chungnam 336-840, Korea 2)Department of Metallurgical Engineering, Chungnam National University, Taedok Science Town, Daejeon 305-764,Korea 

作者机构：Department of Metallurgical Engineering Sunnioon University Department of Metallurgical Engineering Chungnam National University 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2002年第15卷第2期

页      面：154-159页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the financial support of 2001 KIMM R&D program 

主　　题：Cu-Nb micro-composites corrosion microstructure 

摘      要：Corrosion behavior of heavily drawn bundled Copper-niobium filamentarymicro-composite was studied as a function of niobium content to develop the relationship betweenmicrostructure and corrosion behavior in aqueous 30 percent HCl-FeCl_3 solution. TEM observationrevealed that niobium filaments were distributed regularly in copper matrix along the sides of atriangular unit cell in the transverse section and more sub-grain boundaries were absorbed atcopper/niobium phase boundaries with increasing niobium content. The corrosion potential and rate inaqueous 30 percent HCl-10 percent FeCl_3 was-680.3m V_(SHE) and 1.179 X 10^(-5)A/cm^2. Thecorrosion potential and rate decreased as increasing niobium content and FeCl_3. The yield stresscan be described as the sum of the substructure strengthening component due to elongated grains,subgrains and/or cells, the phase boundary strengthening term associated with the Hall-Petch typeinteraction between dislocations and phase boundaries and precipitate strengthening component.