摘要
以《无机物热力学数据库》为依据,给出了Pb、Sn、In、Ga、Ce 等化合物的△G°～T二项式和关系图。Sn及常量配比的Pb-Sn合金,经常温大气腐蚀、155℃干热大气腐蚀或水蒸汽腐蚀,表面腐蚀层用X光光电子能谱分析(XPS或ESCA)确定主要是SnO_2(含有极少量的Pb_3O_4),此结果与热力学分析结果一致。Pb经155℃ 干热大气腐蚀,表面腐蚀区主要是Pb_3O_4。由热力学分析,提出了可能成为抗氧化Pb-Sn 焊料的掺杂元素。
A series of binomial formulae of △G°-T dependence and their diagram for the formation of oxides of Pb、Sn、In、Ga and Ce were given on the basis of calculated results of data from《CData Bank of the Thermodynamic Properties for the Inorganic Substances》. The oxide on the surface of solid metal Sn and Pb-Sn alloys, found by corrosion in atmosphere, dry and heat air or vapor, was defined as SnO2 using XPS. A similar result is obtained for solid Pb. The corrosive layer on the surface of solid Pb was defined as Pb3O4which was formed by passing of dry and heat air over Pb.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1989年第2期167-172,共6页
Journal of University of Science and Technology Beijing
基金
北京市经委和科协的资助课题
关键词
铅
锡
铅锡合金
腐蚀
热力学
lead, Tin, solder, corrosion, thermodvmics
