| Anti-tarnish property of sterling silver alloy with yttrium addition |
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| 作者姓名： | XIANG Xiongzhi BAI Xiaojun CHEN Pengxu |
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| 作者单位： | [College of Materials Science and Engineering, Shenzhen Key Laboratory of Special Functional Materials, Shenzhen University, Shenzhen 518060, China [1] Jiaruite Precious Metal Co., Ltd, Zhongshan 528429, China [2], Ltd, Zhongshan 528429, China |
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| 基金项目： | supported by the National Nature Science Foundation of China (No.51003060);Shenzhen Science & Technology Research (Nos. JC200903130261A, CXB200903090012A);Open Foundation of Shenzhen Key Laboratory of Special Functional Materials (No. T201110) |
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| 摘 要： | It has been demonstrated that sterling silver alloy is a widely used material in the jewelry industry.The anti-tarnish property is one of the most important properties of this material.In this work,the effect of yttrium on the corrosion resistance,and tarnish resistance properties ofsterling silver alloy were investigated with the use of CIE-LAB uniform color scale,which gained acceptance as an effeetive way to assess color.To better understand the mechanism of the effect,the distribution of yttrium in the alloy was analyzed by mainly segregating in gaps among dendrite crystals and grain boundary.An increase in yttrium content in sterling silver alloy resulted in a decrease in the amount of eutectic structure.The tarnish and corrosion resistance of sterling silver were improved with yttrium content increase.However,too high yttrium conteut will lead to poor anti-tarnish properties.
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| 关 键 词： | sterling silver alloy yttrium anti-tarnish property cast metals and alloys |
Anti-tarnish property of sterling silver alloy with yttrium addition |
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| XIANG Xiongzhi,BAI Xiaojun,CHEN Pengxu.Anti-tarnish property of sterling silver alloy with yttrium addition[J].Rare Metals,2012,31(5):438-441. |
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| Authors: | XIANG Xiongzhi BAI Xiaojun CHEN Pengxu |
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| Affiliation: | 1. College of Materials Science and Engineering, Shenzhen Key Laboratory of Special Functional Materials, Shenzhen University, Shenzhen 518060, China
2. Jiaruite Precious Metal Co., Ltd, Zhongshan 528429, China |
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| Abstract: | It has been demonstrated that sterling silver alloy is a widely used material in the jewelry industry. The anti-tarnish property is one of the most important properties of this material. In this work, the effect of yttrium on the corrosion resistance, and tarnish resistance properties of sterling silver alloy were investigated with the use of CIE-LAB uniform color scale, which gained acceptance as an effective way to assess color. To better understand the mechanism of the effect, the distribution of yttrium in the alloy was analyzed by mainly segregating in gaps among dendrite crystals and grain boundary. An increase in yttrium content in sterling silver alloy resulted in a decrease in the amount of eutectic structure. The tarnish and corrosion resistance of sterling silver were improved with yttrium content increase. However, too high yttrium content will lead to poor anti-tarnish properties. |
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| Keywords: | sterling silver alloy yttrium anti-tarnish property cast metals and alloys |
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