锗对925银组织和性能的影响  

Influence of Ge on Structure and Properties of 925Ag Alloys

作　　者：薄海瑞[1] 马春宇[1] 吴海超[1] 陈德东[1] 陈绍兴[1] 

机构地区：[1]广州番禺职业技术学院珠宝学院,广东广州511483

出　　处：《铸造技术》2013年第4期419-422,共4页Foundry Technology

摘　　要：采用金相分析、硬度测试、动电位极化技术、颜色分析等手段,研究了含锗合金与传统斯特林银在显微组织和冷加工、抗电化学腐蚀、抗氧化变色、抗硫化变色等性能方面的不同。结果表明:锗含量在0.2%～0.8%之间,合金具有较好的综合性能,且当含量为0.5%时,合金的铸态硬度较高,冷加工性能、抗电化学腐蚀性能和抗变色性能相对更优。The influences of Ge on the microstructure and properties of 925Ag silvers, such as cold working performance, anti-electrochemical corrosion, anti-tarnishing of sulfuration and oxidation, were studied by means of optical microscopy, hardness test, potentiadynarnic polarization technique and color analysis. The results show that 925Ag alloy has better c omprehensive performance when the content of Ge in silvers is between 0.2% and 0.8%, and when adding 0.5% Ge, 925Ag alloy is better in as-cast hardness, working performance, anti-electrochemical corrosion and anti-tarnishing.

关 键 词：锗 925银 显微组织 硬度 抗变色 抗电化学腐蚀 

分 类 号：TG146.32[一般工业技术—材料科学与工程]