| LU Jin-de,WEI Chun-bei,LIN Song-sheng,ZHANG Jia-ping,LI Hao-yu,LI Zhu-jun,LIU Yi-fei,DAI Ming-jiang,LI Feng,LIU Min.Structure and Properties of NiCrAlY/MoS2 Composite Films Fabricated by Magnetron Sputtering[J],50(5):198-207 |
| Structure and Properties of NiCrAlY/MoS2 Composite Films Fabricated by Magnetron Sputtering |
| Received:September 22, 2020 Revised:December 22, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.05.022 |
| KeyWord:magnetron sputtering NiCrAlY/MoS2 composite films tribological properties high temperature oxidation |
| Author | Institution |
| LU Jin-de |
School of Materials and Energy, Guangdong University of Technology, Guangzhou , China;The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou , China |
| WEI Chun-bei |
The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou , China |
| LIN Song-sheng |
The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou , China |
| ZHANG Jia-ping |
AECC Shenyang Liming Aero-engine Co., Ltd, Shenyang , China |
| LI Hao-yu |
AECC Shenyang Liming Aero-engine Co., Ltd, Shenyang , China |
| LI Zhu-jun |
School of Electromechanical Engineering, Guangzhou Railway Polytechnic, Guangzhou , China |
| LIU Yi-fei |
School of Electromechanical Engineering, Guangzhou Railway Polytechnic, Guangzhou , China |
| DAI Ming-jiang |
The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou , China |
| LI Feng |
School of Materials and Energy, Guangdong University of Technology, Guangzhou , China |
| LIU Min |
The Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou , China |
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| Abstract: |
| The paper aims to prepare NiCrAlY/MoS2 composite films with good tribological properties in wide temperature range by ion source combined with magnetron sputtering method. The NiCrAlY/MoS2 composite films was prepared by ion source combined with magnetron sputtering method. The effects of MoS2 doping content on the film structure, mechanical properties, tribological properties and anti-oxidation properties of the composite films were studied. The element composition, microstructure and phase structure of the films were analyzed by EDS, SEM and XRD respectively. Micorhardness, adhesion strength, friction and wear performance and oxidation resistance of the composite films were analyzed by microhardness tester, Rockwell hardness tester, ball-on-disc friction and wear tester, 3D profilometer and high temperature oxidation test. The results showed that NiCrAlY films and NiCrAlY/MoS2 composite films grew in columnar crystal structure and the phase structure was mainly composed of Ni3Al, Ni-Cr and MoS2. With the increasing of MoS2 content, the columnar crystal size increased and the density of the films decreased, and the microhardness of the films gradually decreased from 503HV to 336HV. The composite films had good adhesion strength, which reached to HF1 level. Doping MoS2 could significantly improve the tribological performance of the composite film. When the MoS2 content reached 48.1at.%~69.8at.%, the NiCrAlY/MoS2 composite films showed good tribological properties with the friction coefficient of 0.038~0.09, and the wear rate of 2.14×10–6 mm3/(N.m), which was more than one order of magnitude lower than that of the NiCrAlY films. The high temperature oxidation tests of NiCrAlY and NiCrAlY-48.1at.% MoS2 composite films were carried out at 400 ℃ and 500 ℃. NiO, Al2O3 and MoO3 phases formed in the composite films after oxidation test. The composite films showed good tribological properties after oxidation test, and the wear rate of the composite films decreased to 1.41×10–6 mm3/(N.m) after oxidation at 400 ℃ for 2 h. The amount of MoS2 has an important impact on the structure and performance of the NiCrAlY/MoS2 composite films. The NiCrAlY/MoS2 composite films with MoS2 content of 48.1at.% possessed good tribological properties in air and after high temperature oxidation. |
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