| WU Qing-dan,LIU Li-ming,XU Hai-feng,XIAO Jin-kun,ZHANG Chao.Flame Sprayed and Atmospheric Plasma Sprayed FeCrBSi Coatings and Their Skid and Wear Resistance[J],46(7):104-109 |
| Flame Sprayed and Atmospheric Plasma Sprayed FeCrBSi Coatings and Their Skid and Wear Resistance |
| Received:January 25, 2017 Revised:July 20, 2017 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2017.07.017 |
| KeyWord:atmospheric plasma spray flame spray FeCrBSi non-skid coating wear resistance |
| Author | Institution |
| WU Qing-dan |
College of Mechanical Engineering, Yangzhou University, Yangzhou , China |
| LIU Li-ming |
College of Mechanical Engineering, Yangzhou University, Yangzhou , China |
| XU Hai-feng |
College of Mechanical Engineering, Yangzhou University, Yangzhou , China |
| XIAO Jin-kun |
College of Mechanical Engineering, Yangzhou University, Yangzhou , China |
| ZHANG Chao |
College of Mechanical Engineering, Yangzhou University, Yangzhou , China |
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| Abstract: |
| The work aims to investigate and compare skid and wear resistance of FeCrBSi coatings by preparing the coatings on 304 stainless steel substrate by atmospheric plasma spray (APS) and flame spray (FS) techniques, respectively. Microstructure and structure of the coatings were analyzed with optical microscope (OM), field-emission scanning electron microscope (FE-SEM) and X-ray diffractometer (XRD), and microhardness with Vickers hardness tester. Friction coefficients and wear volume of the coatings under dry lubrication conditions were measured with friction-abrasion testing machine and three-dimensional optical microscope. Fe-CrBSi coatings prepared in both spraying methods were porous and rarely oxidized during the spraying process. APS coating exhibited considerably higher hardness (837 HV0.1) than the FS coating (749 HV0.1). In friction test, wear rate of APS coating was (9.5±0.49)×106 m3/(N•m), much lower than that of FS coating ((38.63±2.37)×106 m3/(N•m)). However, the friction coefficients of the two coatings were very close, the value between was 0.6～0.7 at 10 N load and 2 Hz frequency. The main wear mechanism of the two coatings was fatigue wear. The as-sprayed FeCrBSi coatings have good skid and wear resistance, and the performance of APS coating is superior to that of FS coating. |
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