Gd改性Ni-Cr钎料钎焊金刚石组织和性能研究

doi:10.11896/cldb.23070245

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Abstract The goal of this research is to prevent heat damage to brazed diamond and improve its mechanical performance. The vacuum induction brazing diamond test was performed at 1 050 ℃ for 5 minutes with a Gd modified Ni-Cr alloy filler metal. The SEM, EDS, and XRD were used to test and characterize the microstructures of the filler metal and the interface following diamond welding. The results reveal that adding Gd enhances the mechanical characteristics of Ni-Cr alloy solder and forms two novel rare earth compounds (Gd₂Ni₁₇ and GdNi₅). The addition of appropriate amount of Gd can improve the exposure of diamond, and the new Gd₂Ni₁₇ compound in the brazed joint is beneficial to reduce the thermal damage of brazed diamond. In addition, when the Gd content is 0.8%, the exposure amount of diamond reaches 62.1% of its own height. The mechanical property test confirms that the static pressure strength and grinding performance of diamond brazed with this filler metal are higher than that of diamond brazed with pure Ni-Cr alloy.

Key words： brazed diamond Ni-Cr solder grinding performance thermal damage

Published: 10 October 2024 Online: 2024-10-23

CLC number:

TG454

Fund:National Natural Science Foundation of China (52271017) and Key Research and Development Plan of Anhui Pro-vince (2022i01020008).

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	Articles by authors
	XU Dong
	JIN Tian
	WANG Pengbo
	CHENG Zhan

Cite this article:

XU Dong,JIN Tian,WANG Pengbo, et al. Study on Microstructure and Properties of Diamond Brazed with Gd Modified Ni-Cr Filler Metal[J]. Materials Reports, 2024, 38(19): 23070245-5.

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http://www.mater-rep.com/EN/10.11896/cldb.23070245 OR http://www.mater-rep.com/EN/Y2024/V38/I19/23070245

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