Fabrication of nickel composite coatings reinforced with TiC particles by laser cladding

Sen Yang; Na Chen; Wenjin Liu; Minlin Zhong; Zhanjie Wang; Hiroyuki Kokawa

doi:10.1016/j.surfcoat.2003.09.062

Fabrication of nickel composite coatings reinforced with TiC particles by laser cladding

Sen Yang, Na Chen, Wenjin Liu, Minlin Zhong, Zhanjie Wang, Hiroyuki Kokawa

ENG - Materials Processing

Research output: Contribution to journal › Article

64 Citations (Scopus)

Abstract

Various weight ratios of TiC particulate nickel-based composite coatings were produced on carbon steel substrates by laser cladding. The experimental results showed that the coating was uniform, continuous and free of cracks when a CaF₂ flux was used. Excellent bonding between the coating and the medium carbon steel substrate was ensured by the strong metallurgical interface. The microstructures of the coating were mainly composed of γ-Ni dendrites, M₂₃C₆, a small amount of CrB, and dispersed TiC particles. The morphologies of TiC particles changed from the globular, cluster to flower-like shape. The volume fraction of TiC particles and the microhardness gradually increased from the bottom to the top of the coating, and the volume fraction of TiC particles increased with increasing of volume fraction of Ti and C. The maximum microhardness of the coatings with 10, 15 and 20 wt.% (Ti + C) in the preplaced alloy powder was approximately HV_0.2750, HV_0.2850 and HV_0.2920, respectively, which was much larger than that of the steel substrate, HV_0.2240.

Original language	English
Pages (from-to)	254-260
Number of pages	7
Journal	Surface and Coatings Technology
Volume	183
Issue number	2-3
DOIs	https://doi.org/10.1016/j.surfcoat.2003.09.062
Publication status	Published - 2004 May 24

Keywords

Gradient distribution
In situ formation
Laser cladding
Nickel-based alloy
TiC particle

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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Yang, S., Chen, N., Liu, W., Zhong, M., Wang, Z., & Kokawa, H. (2004). Fabrication of nickel composite coatings reinforced with TiC particles by laser cladding. Surface and Coatings Technology, 183(2-3), 254-260. https://doi.org/10.1016/j.surfcoat.2003.09.062

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abstract = "Various weight ratios of TiC particulate nickel-based composite coatings were produced on carbon steel substrates by laser cladding. The experimental results showed that the coating was uniform, continuous and free of cracks when a CaF2 flux was used. Excellent bonding between the coating and the medium carbon steel substrate was ensured by the strong metallurgical interface. The microstructures of the coating were mainly composed of γ-Ni dendrites, M23C6, a small amount of CrB, and dispersed TiC particles. The morphologies of TiC particles changed from the globular, cluster to flower-like shape. The volume fraction of TiC particles and the microhardness gradually increased from the bottom to the top of the coating, and the volume fraction of TiC particles increased with increasing of volume fraction of Ti and C. The maximum microhardness of the coatings with 10, 15 and 20 wt.% (Ti + C) in the preplaced alloy powder was approximately HV0.2750, HV0.2850 and HV0.2920, respectively, which was much larger than that of the steel substrate, HV0.2240.",

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AU - Yang, Sen

AU - Chen, Na

AU - Liu, Wenjin

AU - Zhong, Minlin

AU - Wang, Zhanjie

AU - Kokawa, Hiroyuki

PY - 2004/5/24

Y1 - 2004/5/24

N2 - Various weight ratios of TiC particulate nickel-based composite coatings were produced on carbon steel substrates by laser cladding. The experimental results showed that the coating was uniform, continuous and free of cracks when a CaF2 flux was used. Excellent bonding between the coating and the medium carbon steel substrate was ensured by the strong metallurgical interface. The microstructures of the coating were mainly composed of γ-Ni dendrites, M23C6, a small amount of CrB, and dispersed TiC particles. The morphologies of TiC particles changed from the globular, cluster to flower-like shape. The volume fraction of TiC particles and the microhardness gradually increased from the bottom to the top of the coating, and the volume fraction of TiC particles increased with increasing of volume fraction of Ti and C. The maximum microhardness of the coatings with 10, 15 and 20 wt.% (Ti + C) in the preplaced alloy powder was approximately HV0.2750, HV0.2850 and HV0.2920, respectively, which was much larger than that of the steel substrate, HV0.2240.

AB - Various weight ratios of TiC particulate nickel-based composite coatings were produced on carbon steel substrates by laser cladding. The experimental results showed that the coating was uniform, continuous and free of cracks when a CaF2 flux was used. Excellent bonding between the coating and the medium carbon steel substrate was ensured by the strong metallurgical interface. The microstructures of the coating were mainly composed of γ-Ni dendrites, M23C6, a small amount of CrB, and dispersed TiC particles. The morphologies of TiC particles changed from the globular, cluster to flower-like shape. The volume fraction of TiC particles and the microhardness gradually increased from the bottom to the top of the coating, and the volume fraction of TiC particles increased with increasing of volume fraction of Ti and C. The maximum microhardness of the coatings with 10, 15 and 20 wt.% (Ti + C) in the preplaced alloy powder was approximately HV0.2750, HV0.2850 and HV0.2920, respectively, which was much larger than that of the steel substrate, HV0.2240.

KW - Gradient distribution

KW - In situ formation

KW - Laser cladding

KW - Nickel-based alloy

KW - TiC particle

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