双相电触点材料Cu-50Cr合金的高温氧化行为  

High Temperature Oxidation Behavior of Cu-50Cr Two-Phase Contact Material

作　　者：张学军[1] 高春香[1] 孙伶[1] 王淑菊[1] 

机构地区：[1]沈阳化工学院,辽宁沈阳110142

出　　处：《稀有金属材料与工程》2008年第6期1078-1080,共3页Rare Metal Materials and Engineering

基　　金：辽宁省高等学校科学研究项目(05L342);沈阳化工学院博士科研启动基金资助项目(200603206)

摘　　要：研究了双相电触点材料Cu-50Cr合金在700～900℃空气中的高温氧化行为。随着温度的升高合金的氧化速度加快，在700和800℃时近似遵循抛物线规律，而在900℃时则明显偏离抛物线。合金未形成保护性的Cr2O3氧化膜，而形成了氧化物与金属相共存的特殊氧化膜结构。这解释了这种特殊氧化膜结构的形成原因。The oxidation behavior in air of two-phase contact material Cu-50Cr alloy prepared by infiltration has been studied at 700, 800 and 900℃. In general, the corrosion rate increases with the increase of temperature approximately following a parabolic curve at 700 and 800 ℃, but 900 ℃. The Cr2O3 scales for protection have not been formed on the alloy, instead of a complex scales structure in most cases, which is consisted of a copper oxide layer Cr free on the outermost layer and a metal Cr layer surrounded by copper oxide or double oxide Cu2Cr2O4 on the inner layer. The reason for the complex scales structure is discussed at last.

关 键 词：双相Cu-50Cr触头材料 高温氧化行为 熔渗法 

分 类 号：TG146.11[一般工业技术—材料科学与工程]