首页> 外文期刊>International Journal of Microstructure and Materials Properties >Study of the age-hardening in an Au-Cu-Ag dental alloy with Pt and Pd additions with dilatometry, hardness measurements and microstructural analysis
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Study of the age-hardening in an Au-Cu-Ag dental alloy with Pt and Pd additions with dilatometry, hardness measurements and microstructural analysis

机译:含Pt和Pd的Au-Cu-Ag牙科合金的时效硬化,膨胀法,硬度测量和显微组织分析

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摘要

The age-hardening behaviour in a commercial gold dental alloy based on the Au-Cu-Ag system with platinum and palladium addition has been investigated with light optical microscope, scanning electron microscope, EDXS, image analysis, hardness measurements and dilatometric tests. The dilatometer, although seldom used in studying the hardening of precious alloys has proved useful to give good information on the heat treatment parameters. The most important hardening of the homogenised alloy takes place after isothermal treatments at temperatures between 150℃ and 350℃. The metallographic analysis has shown that the microstructure is modified with the presence of discontinuous precipitation on the grain boundaries only after treatments at temperatures starting from 260℃.
机译:通过光学显微镜,扫描电子显微镜,EDXS,图像分析,硬度测量和膨胀测试,研究了基于金-铜-银系统的添加了铂和钯的商品金牙科合金的时效硬化行为。膨胀计虽然很少用于研究贵金属的硬化,但已证明可用于提供有关热处理参数的良好信息。均质合金最重要的硬化发生在150℃至350℃之间的等温处理之后。金相分析表明,只有在260℃以上的温度下进行处理后,晶粒边界上才会出现不连续的析出,从而改变了组织。

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