Nano-Indentation and Tribological Studies of Ultrahigh Strength Carbon Nitride Thin Films
作者:
Dong Li,
Yip-Wah Chung,
Ming-Show Wong,
WilliamD. Sproul,
期刊:
Tribology Transactions
(Taylor Available online 1994)
卷期:
Volume 37,
issue 3
页码: 479-482
ISSN:1040-2004
年代: 1994
DOI:10.1080/10402009408983320
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Carbon nitride (CNX) thin films were prepared by DC magnetron sputtering of a graphite target in a nitrogen ambient onto Si(100) and M2 steel substrates held at ambient temperatures. All CNxcoatings grown to a thickness of 1.5 μm are adherent and smooth. Nanoindentation studies showed that amorphous CNxthin films have hardness and effective Young's modulus comparable to those of amorphous hard carbon. In dry sliding against 52100 steel, CNx-coated M2 substrates give initial friction coefficients ˜0.1, rising to around 0.5 in the steady state. The wear life of coated M2 steels varies inversely with normal load, rising to about two orders of magnitude higher than that of uncoated M2 at a normal load of 1.3N and a sliding speed of 0.12 m/s. This improvement is attributed to the high yield strength of carbon nitride coatings.Presented as a Society of Tribologists and Lubrication Engineers paper at the STLE/ASME Tribology Conference in New Orleans, Louisiana, October 24–27, 1993
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