Kinetic Equation for Internal Oxidation of Cu-Al Alloy Spheres

作     者：宋克兴 

作者机构：School of Materials Science and Engineering Henan University of Science and Technology Jiang Yin Xing Cheng Special Steel Works Co.LTD Jiangyin 214400 China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2007年第22卷第1期

页      面：22-26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）] 0702[理学-物理学] 

基　　金：Funded by the Henan Natural Science Foundation (No.0122021300) Henan University of Science and Technology Major Pre-research Foundation(No.2005ZD003) 

主　　题：kinetic equation sphere Cu-Al alloys internal oxidation 

摘      要：The kinetics of internal oxidation of Cu-Al alloy spheres, containing up to 2.214% mole fraction Al was investigated in the temperature range 1 023 K to 1 273 K, and the depth of internal oxidation was measured in the microscopy. A kinetic equation was derived to describe the internal oxidation of Cu-A1 alloy spheres, which was checked experimentally by means of oxidation depth measurements. The results show that the derived equation is exact enough to describe the kinetics of internal oxidation of Cu-Al alloy spheres. Based on this equation and the oxidation depth measurements, the permeability of oxygen in solid copper has been obtained. Investigation also shows that in the process of internal oxidation, there is no evidence for preferential diffusion along grain boundaries.