Fabrication of Ni-Al/diamond Composite Based on Layered and Gradient Structures of SHS System

Authors

  • Jiafeng Lu School of Mechanical and Electronic Engineering, Guangdong University of Technology
  • Fenglin Zhang School of Mechanical and Electronic Engineering, Guangdong University of Technology
  • Yumei Zhou School of Mechanical and Electronic Engineering, Guangdong University of Technology
  • Huiping Huang School of Mechanical and Electronic Engineering, Guangdong University of Technology
  • Chengyong Wang School of Mechanical and Electronic Engineering, Guangdong University of Technology
  • Shanghua Wu School of Mechanical and Electronic Engineering, Guangdong University of Technology
  • Huatai Lin School of Mechanical and Electronic Engineering, Guangdong University of Technology

Abstract

In this paper layered and gradient structures of Ni-Al SHS system were adopted to manufacture Ni-Al/diamond composites. The effect of the layered and the diamond mesh gradient structures of Ni-Al/diamond on the SHS process and the microstructure of the composites were investigated. It is found that with the increasing of the number of layers, the combustion wave velocity is decreased. The combustion wave velocity for diamond mesh size gradient structure of Ni-Al SHS is faster than that for the layered structure. A well bonding can be formed between diamond and the matrix in layered and gradient structure Ni-Al/diamond composites due to the melt of Ni-Cr brazing alloy.

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Published

2017-12-13

Issue

Vol. 49 No. 2 (2017)

Section

Articles