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| High Temperature Oxidation and Friction Behavior of Nickel Based and Cobalt Based Coating Deposited by Super Detonation Spray |
| Received:September 18, 2019 Revised:November 18, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.01.014 |
| KeyWord:NiCr-Cr3C2 NiCrAlY CoMoCrSi high temperature friction high temperature wear high temperature oxidation detonation spray CCDS2000 |
| Author | Institution |
| WANG Chang-liang |
Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
| CUI Yong-jing |
Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
| TANG Zhi-hui |
Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
| LU Feng |
Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
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| Abstract: |
| The paper aims to study the friction and wear resistance properties of NiCr-Cr3C2, CoMoCrSi and NiCrAlY coating at high temperature to meet the high temperature and high speed development demands of equipment.These two kinds of coating were deposited by super detonation spray process. The porosity, micro-hardness, bond strength of these coatings were tested. High temperature oxidation and high temperature wear resistant were studied at 650 ℃ for 260h as well as 400 and 650 ℃ respectively to compare oxidation mass gain, friction coefficient and friction mass loss under different high temperature conditions.The oxidation mass gain of the coatings were 0.18,0.1,0.005 mg/(cm2.h). At 650 ℃, the friction coefficient were 0.5, 1.0 and 0.6.The microstructure and the binding strength of the coating sprayed by super detonation are better than plasma process. The oxidation products Co3O4 and Cr2O3 at high temperature have different effects on the high temperature friction coefficient. NiCr-75Cr3C2 and NiCrAlY coating should be used for the friction pair materials of SG37A at 400 and 650 ℃. |
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