Kinetics of Internal Oxidation of Cu-Al Alloy Plate  

作　　者：宋克兴 

机构地区：[1]School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an 710049,China [2]School of Materials Science and Engineering, Henan University of Science and T echnology,Luoyang 471003,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2005年第1期13-16,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National High technology"863"Project (No.2002AA331112); the Henan Natural Science Foundation ( No.0122021300)

摘　　要：The kinetics of internal oxidation of dilut e Cu-Al alloys, containing up to 2.214% molar fraction Al, was investigated over the temperature range of 1023K to 1273K, and the depth of internal oxidation was measured by microscopies. A modified rate equation was derived to describe the kinetics of internal oxidation of Cu-Al alloy plate.Based on the derived equati on, the permeability of oxygen in solid copper was obtained from the internal ox idation measurements. The experimental results show that the depth of the intern al oxidation is a parabolic function of time, there is no evidence for preferent ial diffusion along grain boundaries and an outer layer of pure copper was forme d on the external surface of samples.The kinetics of internal oxidation of dilut e Cu-Al alloys, containing up to 2.214% molar fraction Al, was investigated over the temperature range of 1023K to 1273K, and the depth of internal oxidation was measured by microscopies. A modified rate equation was derived to describe the kinetics of internal oxidation of Cu-Al alloy plate.Based on the derived equati on, the permeability of oxygen in solid copper was obtained from the internal ox idation measurements. The experimental results show that the depth of the intern al oxidation is a parabolic function of time, there is no evidence for preferent ial diffusion along grain boundaries and an outer layer of pure copper was forme d on the external surface of samples.

关 键 词：internal oxidation KINETICS Cu-Al alloys dif fusion PLATE 

分 类 号：TG172[金属学及工艺—金属表面处理]