| CHEN Meng,LIU Chang-yong,ZHOU Liang,GAO Xi-xian,TIAN Xiao-wei,CHANG Hua-ting.Al2O3 Based Composite Coatings Prepared by Plasma Spraying[J],46(11):241-247 |
| Al2O3 Based Composite Coatings Prepared by Plasma Spraying |
| Received:July 17, 2017 Revised:November 20, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.11.033 |
| KeyWord:plasma spraying Al2O3-based composite coatings corrosion resistance wear resistance wave absorbing properties |
| Author | Institution |
| CHEN Meng |
School of Materials Science and Engineering, Chang'an University, Xi'an , China |
| LIU Chang-yong |
Shandong Kangda Precision Machinery Manufacturing Co., Ltd, Longkou , China |
| ZHOU Liang |
School of Materials Science and Engineering, Chang'an University, Xi'an , China |
| GAO Xi-xian |
School of Materials Science and Engineering, Chang'an University, Xi'an , China |
| TIAN Xiao-wei |
School of Materials Science and Engineering, Chang'an University, Xi'an , China |
| CHANG Hua-ting |
School of Materials Science and Engineering, Chang'an University, Xi'an , China |
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| Abstract: |
| With the development of plasma spraying technology, plasma-sprayed Al2O3-based composite coatings have been widely used in the fields of corrosion protection, wear resistance, aerospace, etc. Firstly, new plasma spraying technologies (laser plasma spraying, suspension plasma spraying and supersonic plasma spraying) and main spraying parameters (spraying power, powder feeding method, spraying distance, etc.) were briefly introduced. Then, from the perspective of improving corrosion resistance of the coatings, effects of the second phase, spraying parameters and post-treatment process on porosity of the coatings as well as the relationship between the three factors and corrosion resistance of the coatings were expounded. Then the effects of hardness, feeding characteristics and laser cladding technology on wear resistance of Al2O3-based composite coatings were analyzed emphatically. Factors affecting the hardness, as well as effects of characteristics of spraying powder and laser cladding treatment on microstructure of the composite coating were described in detail. In the aspect of study on electromagnetic absorption properties, effects of adjusting absorber content, coating thickness, various electromagnetic wave absorber matching and spraying parameters on wave absorbing properties of plasma-sprayed Al2O3-based composite coatings were discussed. Finally, prospect of preparing Al2O3-based composite coatings exhibiting better performance by adopting plasma spraying technology were proposed. |
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