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首页> 外文期刊>Materials transactions >Composition Dependence of Titanium in Silver-Copper-Titanium Alloy Braze on Dissimilar Laser Brazing of Boron Nitride Ceramics and Cemented Carbide
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Composition Dependence of Titanium in Silver-Copper-Titanium Alloy Braze on Dissimilar Laser Brazing of Boron Nitride Ceramics and Cemented Carbide

机译：银铜钛合金钎料中钛的成分依赖性对氮化硼陶瓷和硬质合金的不同激光钎焊

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摘要

Dissimilar laser brazing of boron nitride ceramics and cemented carbide has been investigated by using silver-copper-titanium braze alloys with different titanium contents of up to 2.80mass percent ; efficient bond strength was achieved using brazes with more than 1.25 mass percent of titanium. The contact angle between hexagonal boron nitride ceramics and the molten braze, which was measured by the sessile drop method at 1123 K, decreased to less than 30 deg when the Ti content was over 0.41 mass percent . The difference in the wetting property determined by laser brazing method and that by sessile drop method is attributed to the difference in the heating process of the two methods. Structural analysis of the interface between the boron nitride ceramics and the braze was carried out by electron probe micro-analysis (EPMA).
机译：通过使用不同钛含量高达2.80％（质量）的银铜钛钎焊合金，研究了氮化硼陶瓷和硬质合金的不同激光钎焊;使用钛含量超过1.25质量％的钎料可达到有效的粘结强度。当Ti含量超过0.41质量％时，通过固着滴法在1123 K下测量六方氮化硼陶瓷与熔融钎料之间的接触角减小至小于30度。通过激光钎焊法和通过无滴法测定的润湿性的差异归因于两种方法的加热过程的差异。通过电子探针显微分析（EPMA）对氮化硼陶瓷与钎焊之间的界面进行结构分析。

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