An Experimental Study on Synthesizing TiC-10Ni Composite Coating Using Electro-Thermal Explosion Ultra-High Speed Spraying

Abstract:

In this work, TiC-10Ni coating was synthesized on copper substrate by electro-thermal explosion directional spraying (EEUSS) method at the discharge voltage of 26kV. Electrical characteristics of the explosion were obtained. The foil was overheated in less 26 microseconds. The total electric energy supplied to the foil was 12.7 times the theoretical amount needed to melt the foil. Phase structure and microstructure of the coating were studied by means of X-ray diffraction (XRD) and scanning electron microscope (SEM). The XRD from the coating surface consists of TiC and the solid solution of Ni, as well as the residual C. The TiC-10Ni coating, which exhibits no pores or cracks, consists of an irregular spheroidal TiC phase embedded in a nearly continuous binder. TiC particles are uniformly distributed and the size of the TiC particle of the coating is less than 1.0 μm because of the solute trapping effect.

• Periodical: Advanced Materials Research (Volume 842)
• Pages: 326-331
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.842.326
• Online since: November 2013
• Authors: Jing Jing Liu*, Zong De Liu
• Keywords: Electrical Characteristics, Electro-Thermal Explosion Ultra-High Speed Spraying, Microstructure, TiC-10Ni Coating

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