Effect of Plasma Spraying Gas on Microstructure and Properties of 95vol.%Al2O3–5vol.%SiC Nanocomposite Coatings

Pham Huyen Tram; Joon Won Min; Huang Chen; Soo Wohn Lee

doi:10.4028/www.scientific.net/MSF.486-487.193

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HomeMaterials Science ForumMaterials Science Forum Vols. 486-487Effect of Plasma Spraying Gas on Microstructure...

Effect of Plasma Spraying Gas on Microstructure and Properties of 95vol.%Al₂O₃–5vol.%SiC Nanocomposite Coatings

Abstract:

Based on the strong inhibition of SiC particles on the grain growth of the Αl2O3 matrix, a mixture powder of α-Al2O3 and SiC was used as feedstock to deposit the nanocomposite coatings by plasma spraying. To determine the effect of plasma spraying gas on microstructure and mechanical properties of Al2O3–SiC nanocomposite coatings, primary Ar gas and secondary H2 gas were chosen, which have an effect on temperature and velocity of the flyingpowders at the time of impacting on substrate. The X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) were used to characterize the microstructures of these coatings. Surface roughness was measured also.

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Materials Science Forum (Volumes 486-487)

Pages:

193-196

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.486-487.193

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Online since:

June 2005

Authors:

Pham Huyen Tram, Joon Won Min, Huang Chen, Soo Wohn Lee

Keywords:

Al₂O₃, Nanocomposite Coating, Plasma Spraying, Silicon Carbide (SiC)

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