中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (42): 7861-7864.doi: 10.3969/j.issn.1673-8225.2010.42.017

• 材料力学及表面改性 material mechanics and surface modification • 上一篇    下一篇

镀金技术对医用镍铬合金表面性能的影响

陈  光，余占海，马  昕，张  轩，殷丽华，张菊梅   

  1. 兰州大学口腔医学院，甘肃省兰州市 730000
  • 出版日期:2010-10-15 发布日期:2010-10-15
  • 通讯作者: 余占海，教授，兰州大学口腔医学院修复科， 甘肃省兰州市 730000
  • 作者简介:陈光★，女，1983年生，河北省保定市人，汉族，兰州大学口腔医学院在读硕士，主要从事口腔修复美学，口腔医用金属研究。 sunny123819@126.com
  • 基金资助:

    甘肃省自然科学基金项目(3ZS061-A25-103)。

Effect of gold-plated layer treatment on the surface properties of medical Ni-Cr alloy

Chen Guang, Yu Zhan-hai, Ma Xin, Zhang Xuan, Yin Li-hua, Zhang Ju-mei   

  1. School of Stomatology, Lanzhou University, Lanzhou   730000, Gansu Province, China
  • Online:2010-10-15 Published:2010-10-15
  • Contact: Yu Zhan-hai, Professor, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China
  • About author:Chen Guang★, Studying for master’s degree, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China sunny123819@126.com
  • Supported by:

    the Natural Science Foundation of Gansu Province, No. 3ZS061-A25-103*

PDF

394

被引次数

5

摘要：

背景：镍铬合金长期存在于体液这种特殊的电解质环境中，镍离子析出现象尤为明显，不仅可能导致过敏反应，还有一定的致畸和致癌作用。对镍铬合金表面进行修饰，从理论上可以有效提高镍铬合金安全性。
目的：观察医用镍铬合金表面经无氰镀金处理前后，镍离子析出量的变化。
方法：将50件镍铬合金试件随机分为镍铬合金无氰镀金组与镍铬合金组。分别浸泡于pH 4.8与pH 7.0的人工唾液中一定时间后，利用AA-240型原子吸收光谱仪进行镍离子析出量检测。
结果与结论：无氰镀金后的镍铬合金在pH 4.8与pH 7.0的人工唾液环境中镍离子析出量均有所下降，与未镀金处理的镍铬合金比较，差异具有显著性意义(P < 0.05)。结果表明无氰镀金后镍离子析出量降低，医用镍铬合金表面稳定性有所提高。

关键词: 镍铬合金, 无氰镀金, 镍离子, 金属腐蚀, 人工唾液

Abstract:

BACKGROUND: Nickel-chromium alloy exists for a long term in body fluid, which is a specific electrolyte environment, the precipitation of nickel ions is especially evident, leading to not only allergic reactions, but also certain teratogenic and carcinogenic effects. Surface modification on nickel-chromium alloy can theoretically improve the safety of nickel-chromium alloy.
OBJECTIVE: To determine the amount of Ni2+ released of medical nickel-chromium alloys, which was electroplated with non-cyanogen gold coating treatment.
METHODS: A total of 50 nickel-chromium alloy specimens were randomly divided into nickel-chromium alloy with non-cyanogen gold-plated group and nickel-chromium alloy group. The specimens were soaked in artificial saliva environment at pH 4.8 and pH 7.0 respectively, the nickel ion precipitation was detected using AA-240 atomic absorption spectronphotometer.
RESULTS AND CONCLUSION: The nickel ion precipitation from non-cyanogen gold-plated nickel-chromium alloy specimens was significant decreased compared with unplated specimens in artificial saliva environment at pH 4.8 and pH 7.0 (P < 0.05). The non-cyanogen gliding may reduce the nickel ion precipitation, the stability of medical nickel-chromium alloy surface is improved.

中图分类号: