Effect of High Velocity Arc Spraying Parameters on Properties of FeNiCrAl Coating
FeNiCrAl coating is a kind of surface wear resistant material for shaft parts. Microstructure, adhesive strength, phase composition and microhardness were analyzed in order to study the influence mechanism of spraying parameters on coating properties. The relation among the spraying current, coating...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Aeronautical Materials
2016-12-01
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| Series: | Journal of Aeronautical Materials |
| Subjects: | |
| Online Access: | http://jam.biam.ac.cn/CN/10.11868/j.issn.1005-5053.2016.6.007 |
| Summary: | FeNiCrAl coating is a kind of surface wear resistant material for shaft parts. Microstructure, adhesive strength, phase composition and microhardness were analyzed in order to study the influence mechanism of spraying parameters on coating properties. The relation among the spraying current, coating microstructure and cohesive strength was studied in detail. The results shown that the spraying current is very important to obtain the dense coating (porosity of 8.76%) with cohesive strength of 52.3 MPa and an excellent coating is prepared by spraying current 200 A, spraying voltage 34 V and spraying distance 160 mm. The hardness of coating is 626 HV<sub>0.1</sub> and about 1.6 times as that of the matrix. The effective mechanism is relevant to the scatter distribution of the Fe-Al intermetallic compound and Cr<sub>0.19</sub>Fe<sub>0.1</sub>Ni<sub>0.11</sub> solution in the coating. |
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| ISSN: | 1005-5053 1005-5053 |