Analysis of Laser-Brazed Diamond Particle Microstructures

Authors

  • Zhibo YANG
  • Aiju LIU
  • Ruiyun YANG

DOI:

https://doi.org/10.5755/j01.ms.21.4.9626

Keywords:

laser brazing, diamond, Ni-base alloy, interfacial microstructure

Abstract

Brazing diamond particles to a steel substrate using Ni-based filler alloy was carried out via laser in an argon atmosphere. The brazed diamond particles were detected by scanning electron microscope (SEM), X-ray diffraction (XRD), and energy dispersive X-ray spectroscopy (EDS). The formation mechanism of carbide layers was discussed. All the results indicated that a high-strength bond between the diamond particles and the steel substrate was successfully realized. The chromium in the Ni-based alloy segregated preferentially to the surfaces of the diamonds to form a chromium-rich reaction product, and the bond between the alloy and the steel substrate was established through a cross-diffusion of iron and Ni-based alloy.

DOI: http://dx.doi.org/10.5755/j01.ms.21.4.9626

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Published

2015-11-19

Issue

Vol. 21 No. 4 (2015)

Section

TESTING AND ANALYSIS OF MATERIALS

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