| FU Ze-yu,WANG Tian-guo.Effect of the Ratio of Nitrogen and Argon on the Microstructure and Properties of CrAlN Film Deposited on Die Steel Surface[J],51(1):105-112 |
| Effect of the Ratio of Nitrogen and Argon on the Microstructure and Properties of CrAlN Film Deposited on Die Steel Surface |
| Received:January 25, 2021 Revised:May 31, 2021 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.01.011 |
| KeyWord:multi-arc ion plating CrAlN film oxidation resistance corrosion resistance |
| Author | Institution |
| FU Ze-yu |
School of Materials Science and Engineering, Hubei University of Automotive Technology, Shiyan , China |
| WANG Tian-guo |
School of Materials Science and Engineering, Hubei University of Automotive Technology, Shiyan , China |
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| Abstract: |
| H13 steel is widely used in the die industry because of its excellent performance, but the poor working environment often makes the surface of H13 die steel fail. In this paper, CrAlN thin film is prepared on the surface of H13 die steel by multi-arc ion plating technology to improve the surface performance of H13 die steel and prolong the service life of the die. In the experiment, nitrogen was used as the reaction gas to prepare CrAlN films with different atomic contents by changing the nitrogen flow rate. The effects of nitrogen-argon ratio on the surface morphology, microstructure, hardness, adhesion, high temperature oxidation resistance and corrosion resistance of CrAlN films were studied. The results showed that with the increase of nitrogen argon ratio, the number of large particles on the surface of CrAlN film decreased, the diffraction peak of CrN(200) gradually increased, and the hexagonal AlN(101) gradually disappeared. The hardness, adhesion, high temperature oxidation resistance and corrosion resistance first increased and then decreased. When the ratio of nitrogen and argon was 8∶2, the CrAlN film had the best performance, the hardness reached the maximum value of 2400HV, the adhesion between film and substrate reached the maximum value of 29 N, and the high temperature oxidation resistance and corrosion resistance were the best. The experimental results show that the CrAlN film prepared on the surface of H13 die steel by multi-arc ion plating technology can improve the surface properties and prolong the service life. When the ratio of nitrogen to argon is 8∶2, the CrAlN film prepared on the surface of H13 die steel is the best. |
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