期刊
TRIBOLOGY INTERNATIONAL
卷 97, 期 -, 页码 423-430出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2016.02.007
关键词
CoCrMo alloy; Hot pressing; Tribocorrosion; Biomedical applications
资金
- FCT (Fundacao para a Ciencia e Tecnologia -Portugal) [UID/EEA/04436/2013, EXCL/EMS-TEC/0460/2012]
The aim of this work was to investigate the influence of the processing conditions on the tribocorrosion behavior of hot pressed CoCrMo biomedical alloys. Several samples were processed as a function of different processing temperatures (900, 1000 and 1100 degrees C) and times (10, 30 and 60 min). Tribocorrosion tests were carried out in artificial saliva at 37 degrees C, under 1 N normal load, 1 Hz frequency and 3 mm stroke length. Open circuit potential was measured. The worn surfaces were inspected by means of SEM/EDS. Results revealed a decrease of wear rate with increasing hot pressing time. The samples hot pressed at 1000 degrees C revealed the lowest wear rate. These findings showed that the processing conditions play a relevant role on tribocorrosion behavior of CoCrMo. (C) 2016 Elsevier Ltd. All rights reserved.
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