Corrosion evolution of high-temperature formed oxide film on pure Sn solder substrate  

纯Sn焊料表面高温氧化膜的腐蚀演化行为

作　　者：Hui ZHAO Xu SUN Long HAO Jian-qiu WANG Jing-mei YANG 赵晖;孙旭;郝龙;王俭秋;杨景梅(沈阳理工大学材料科学与工程学院,沈阳110159;中国科学院金属研究所中国科学院核用材料与安全评价重点实验室,沈阳110016;中国科学技术大学材料科学与工程学院,合肥230026;沈阳飞机工业(集团)有限公司,沈阳110034)

机构地区：[1]School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110159,China [2]CAS Key Laboratory of Nuclear Materials and Safety Assessment,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [3]School of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,China [4]Shenyang Aircraft Industry(Group)Corporation Ltd.,Shenyang 110034,China

出　　处：《Transactions of Nonferrous Metals Society of China》2022年第12期3998-4013,共16页中国有色金属学报（英文版）

基　　金：financial support from CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences。

摘　　要：The evolution of morphology, composition, thickness and corrosion resistance of the oxide film on pure Sn solder substrate submitted to high-temperature aging in 150 °C dry atmosphere was investigated. The results indicate that high-temperature aging accelerates the dehydration of Sn(OH)_(4)in the pre-existing native oxide film to form SnO_(2)and facilitates the oxidation of fresh Sn substrate, resulting in the gradual increase in oxide film thickness and surface roughness with prolonging aging time. However, the corrosion resistance of the film initially is enhanced and then deteriorated with an extending aging time. Besides, the formation and evolution mechanisms of the oxide film with aging time were discussed.对150℃高温时效条件下纯锡焊料表面氧化膜形貌、组成、厚度及耐蚀性的演化行为进行研究。结果表明,高温时效加速焊料表面原有自然氧化膜层中的Sn(OH)_(4)向SnO_(2)转变,同时加速新鲜Sn基体的氧化,从而使纯Sn焊料表面氧化膜厚度和粗糙度随时效时间的延长逐渐增加。然而,表面氧化膜层的耐蚀性随时效时间的延长呈先增强而后减弱的趋势。此外,还对纯Sn焊料表面氧化膜层的成膜机制及膜层演化机制进行讨论。

关 键 词：pure Sn solder oxide film high-temperature aging corrosion resistance 

分 类 号：TG42[金属学及工艺—焊接] TG174.4