In this paper,the friction, wear behaviour, and wear mechanisms of in-situ transformed carbon fibre toughened alumina ceramic matrix composite were investigated. The 20vol% Cf/Al2O3 composites were fabricated by hot-press sintering in vacuum. Wear tests for 20vol% Cf /Al2O3 composite, commercial Al2O3 ceramic and 40Cr steel were conducted using a cylinder on blocks wear tester under PAO oil and PAO+carbon nanotube (CNT) as lubricants and at applied loads of 220N and 520N as well. The results show that the frictional coefficient of these three materials at 520N are lower than at 220N and that 20vol% Cf/Al2O3composite presents the lowest frictional coefficients. The wear resistance of 20vol% Cf/Al2O3 is at least 10 times higher than 40Cr and 1.8 times higher than Al2O3 in both PAO oil and PAO+carbon nanotube(CNT) lubricants. The wear mechanisms of these three materials are different. 40Cr presents ploughing and local deformation and even tearing, Al2O3 shows spalling and grinding, and 20vol% Cf/Al2O3 demonstrate slight spalling and shallow ploughing. These results show that in-situ transformed carbon fibres play a toughening role in Al2O3 ceramic and the PAO+CNT lubricant has better lubricative role than PAO oil.
Wear – Elsevier
Published: May 1, 2015
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera