INFLUENCE OF PROCESS PARAMETERS ON THE PERFORMANCE UNIFORMITY OF DETONATION GUN SPRAYED WC-Co COATINGS

doi:10.3724/SP.J.1037.2010.00351

Acta Metall Sin

2011, Vol. 47

Issue (1): 115-122 DOI: 10.3724/SP.J.1037.2010.00351

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INFLUENCE OF PROCESS PARAMETERS ON THE PERFORMANCE UNIFORMITY OF DETONATION GUN SPRAYED WC-Co COATINGS

WANG Tiegang¹⁾, SONG Binghong²⁾, HUA Weigang¹⁾, GONG Jun¹⁾, SUN Chao¹⁾

1) State Key Laboratory of Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
2) AVIC Harbin Dong'an Engine (Group) Co., Ltd., Harbin 150066

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WANG Tiegang SONG Binghong HUA Weigang GONG Jun SUN Chao. INFLUENCE OF PROCESS PARAMETERS ON THE PERFORMANCE UNIFORMITY OF DETONATION GUN SPRAYED WC-Co COATINGS. Acta Metall Sin, 2011, 47(1): 115-122.

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Abstract Based on the orthogonal experiment, the effects of oxygen-fuel ratio and spraying distance on physical and mechanical properties of D-gun sprayed WC-Co coatings were investigated. An ideal coating with the uniform dense microstructures, high hardness and elastic modulus, and excellent wear resistance was obtained by technology optimization. The phase identifications and microstructure observation of the optimized WC-Co coating were conducted by XRD and SEM, respectively. The coating showed near-isotropic behaviors, which has been verified by the comparisons of mechanical and wear properties between cross section and surface. The mechanisms how the spraying parameters affected near--isotropic characters of the D-gun sprayed WC-Co coating were analyzed and discussed.

Key words: detonation gun spraying WC-Co coating porosity microhardness elastic modulus micro-scale abrasive wear

Received: 14 July 2010

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TG174.44

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	YU Tie-Gang
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	GONG Jun
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https://www.ams.org.cn/EN/10.3724/SP.J.1037.2010.00351 OR https://www.ams.org.cn/EN/Y2011/V47/I1/115

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