期刊
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
卷 144, 期 7, 页码 -出版社
ASME
DOI: 10.1115/1.4053319
关键词
bulk metallic glass; friction coefficient; nitrogen doping; dry friction; hardness; wear
资金
- National Natural Science Foundation of China [51735003, 52071089]
- Basic and Applied Basic Research Major Project of Guangdong Province [2019B030302010]
- Applied Science and Technology Research Project of Guangdong Province [2015B010127003]
- Guangzhou Science and Technology Project [201807010012]
- Guangdong Province Science and Technology Special Fund (Big Special Project+Task List Management Mode) Funded Project of Qingyuan City [2019dzx025]
- Guangdong Academy of Sciences Development Special Fund Project [2019GDASYL-0203002]
- Guangdong Special Support Program [2019BT02C629]
The effects of nitrogen on friction and wear properties of Zr-based bulk metallic glasses were experimentally investigated. The introduction of nitrogen improves the hardness and wear resistance of the metallic glass, achieving better friction and wear properties.
The effects of nitrogen on friction and wear properties of Zr-based bulk metallic glasses were investigated experimentally. Bar like metallic glasses were prepared by copper mold suction casting method. X-ray diffraction (XRD) was used to characterize the structure of samples, which proved their amorphous structure. The surface properties of the samples were studied with a microhardness tester and a friction and wear tester. The wear surfaces of the sample were analyzed by scanning electron microscopy (SEM) and energy-dispersive spectrometer (EDS). The results show that the introduction of nitrogen improves the hardness and wear resistance of Zr-based metallic glass. Compared with the non-N-doped Zr-based metallic glass, the N-doped Zr-based metallic glasses have higher hardness and lower wear-rate. In particular, the sample with 1.5% nitrogen doping has the largest hardness (578.58 hv) and the lowest wear-rate (1.04 x 10(-3) mm(3)/N/m). The wear types of N-doped Zr-based amorphous on GCr15 are mainly abrasive wear and adhesive wear.
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