华西口腔医学杂志

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反复熔铸对金铂烤瓷合金力学性能影响的研究

程辉1  杨松1  李秀容2  吴维青3  郑明1  王颖卉1   

  1. 1.福建医科大学附属口腔医院修复科; 2.技工中心; 3.福州大学测试中心, 福州 350002
  • 出版日期:2013-08-01 发布日期:2013-08-01
  • 通讯作者: 程辉,Tel:0591-83736420
  • 作者简介:程辉(1964—),男,福建人,教授,博士
  • 基金资助:

    福建省科技攻关重点基金资助项目(2010Y0024);福建医科大学附属口腔医院发展学科建设基金资助项目[(2008)39号]

Physical properties of Au-Pt ceramic alloy after recasting

Cheng Hui1, Yang Song1, Li Xiurong2, Wu Weiqing3, Zheng Ming1, Wang Yinghui1.   

  1. 1. Dept. of Prosthodontics, Affiliated Stomatological Hospital, Fujian Medical University, Fuzhou 350002, China; 2. Dental Tech. Center, Affiliated Stomatological Hospital, Fujian Medical University, Fuzhou 350002, China; 3. Test Center, Fuzhou University, Fuzhou 350002, China
  • Online:2013-08-01 Published:2013-08-01

摘要:

目的  探讨反复熔铸对金铂烤瓷合金力学性能的影响。方法  金铂烤瓷合金经过单纯反复熔铸3次后,用拉伸实验对各代试件的拉伸强度、0.2%屈服强度、延伸率进行比较;用弯曲实验对各代试件的弯曲强度、弯曲模量进行比较;用硬度实验对各代试件的维氏硬度值进行比较。结果  经过不同熔铸次数的金铂烤瓷合金的拉伸强度、0.2%屈服强度、延伸率、弯曲强度及维氏硬度值差异均无统计学意义。Ⅱ代、Ⅲ代试件的弯曲模量与Ⅰ代相比,显著升高(P<0.05)。结论  金铂烤瓷合金至少可以反复熔铸3次而不引起力学性能的下降。

关键词: 金铂烤瓷合金, 反复熔铸, 力学性能

Abstract:

 Objective  To investigate the influences of recasting on the mechanical properties of Au-Pt ceramic alloy. Methods  Au-Pt ceramic alloy samples were prepared and recast for 3 times without adding any new Au-Pt ceramic alloy. The tensile strength, 0.2% yield strength, percentage of elongation, flexural strength,  flexural modulus and Vickers hardness of each specimen were measured. Results  Being cast for different times, the Au-Pt ceramic alloy showed no significant differences on their tensile strength, 0.2% yield strength, percentage of elongation, flexural strength or Vickers hardness. The flexural modulus of the Au-Pt alloys being cast for 2 or 3 times was significantly higher than that of the alloys being cast for 1 time(P<0.05). Conclusion  Au-Pt ceramic alloy can be recast for 3 times at least, without any decrease in the mechanical properties.

Key words: Au-Pt ceramic alloy, recast, physical properties