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| Study on Microstructure and Properties of Supersonic Plasma Sprayed Al_2O_3 Coatings |
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| DOI：doi：10.3969/j.issn.1007-7545.年份.期号.顺序号 |
| KeyWord:Supersonic plasma spray;Microstructure;Property; |
| WANG Hai-jun,GUO Yong-ming,LIU Ming,LU Huan |
WANG Hai-jun,GUO Yong-ming,LIU Ming,LU Huan (National Key Laboratory for Equipment Remanufacturing,Institute of Armored Force,Beijing 100072,China)
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| Abstract: |
| Al_2O_3 coatings were prepared by the supersonic plasma spraying system.The effect of arc power and spraying distance on Al_2O_3 coatings' microstructure and properties was characterized by SEM and Nano-indentation tester.The results indicate that Al_2O_3 coatings have the lowest porosity rate and the highest micro-hardness and elastic modulus with 60 kW arc power and 100 mm spraying distance.The micro-hardness and elastic modulus which are mainly affected by coatings' porosity and micro-cracks,increase fir... |
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