电焊机2025，Vol.55Issue(10)：170-177,8.DOI:10.7512/j.issn.1001-2303.2025.10.18
基于铜磷钎料焊后"磷油-铜绿"形成机理及性能改善研究
Study on the Formation Mechanism of"Phosphorus Oil-patina"in Cu-P Brazing Alloys and Performance Improvement
孙军刚 1叶兆丰 1王思鸿 1黄世盛 1牛邦硕 1罗良良 1罗寿根 1乔雪1
作者信息
- 1. 浙江省华光新型绿色钎焊材料重点企业研究院,浙江 杭州 311100||杭州华光焊接新材料股份有限公司,浙江 杭州 311100
- 折叠
摘要
Abstract
This study aims to investigate the formation mechanism of black,viscous liquid composite films("phosphorus oil")and their role in inducing patina on Cu-P brazing filler metals during air-atmosphere induction brazing,and to propose effective inhibition strategies.Through EDS,XRD,and first-principles calculations,the phosphorus oil was identified mainly as phosphates such as Cu2P2O7,whose formation is thermodynamically spontaneous;the patina was identified as ba-sic copper carbonate formed from phosphorus oil under humid conditions.Two approaches were compared:nitrogen shield-ing effectively suppressed phosphorus oil but incurred high cost and limited applicability;while adding trace lanthanide(Ln)elements formed a dense and stable Ln-O oxide film preventing P2O5 generation at the source.The Ln modified filler main-tained original melting and wetting properties,while significantly improving joint density,mechanical performance,and cor-rosion resistance.The results demonstrate that the Ln alloying strategy offers an intrinsic protection mechanism,providing a new approach for developing high performance Cu-P brazing materials.关键词
Cu-P钎料/钎焊/润湿性能/磷油-铜绿/稀土合金化Key words
Cu-P brazing filler metal/brazing/wettability/oily phosphate film/Ln alloying分类
矿业与冶金引用本文复制引用
孙军刚,叶兆丰,王思鸿,黄世盛,牛邦硕,罗良良,罗寿根,乔雪..基于铜磷钎料焊后"磷油-铜绿"形成机理及性能改善研究[J].电焊机,2025,55(10):170-177,8.
