Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (2): 141-146.doi: 10.3969/j.issn.1000-565X.2013.02.023

• Materials Science & Technology • Previous Articles    

Nickel Release Rate of BZn10-25 Nickel Silver Used for Jewelry Manufacturing

Yuan Jun-ping Li Wei   

  1. Department of Material Science and Engineering,Jinan University,Guangzhou 510632,Guangdong,China
  • Received:2011-12-21 Revised:2012-07-05 Online:2013-02-25 Published:2013-01-05
  • Contact: 李卫(1963-)，男，教授，博士生导师，主要从事金属材料研究． E-mail:liweijn@yahoo.com.cn
  • About author:袁军平(1969-)，男，在职博士生，广州番禺职业技术学院教授级高级工程师，主要从事金属材料研究．E-mail:yuanjp@gzpyp．edu．cn
  • Supported by:

    NSFC-广东省自然科学联合基金资助项目(U1034002

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Abstract:

With the extensive use o nickel silver in jewelry manufacturing,the nickel release rate of this material has become a universal concern for jewelry industry and consumers.In this paper,BZn10-25 nickel silver was cho-senas the experimental material,and its nickel release rates under different conditions were tested according to the EN1811 standard.The results show that(1)the heat and surface treatment methods significantly affect the nickel release rate;(2)the sandblasting surface with 100-mesh quartz sand and the polishing surface under high-tempera-ture quenching are both of the highest nickel release rate,while the polishing surface under medium-temperature tempering is of the lowest rate;and(3)no matter what condition there is,the nickel release rate of BZn10-25 nickel silver is far more than the limit specified by the Nickel Directive,which means that the jewelry made with this material is likely to cause nickel allergy.

Key words: jewelry material, nickel silver, nickel release, heat treatment, surface treatment, nickel allergy

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