期刊
TRIBOLOGY INTERNATIONAL
卷 70, 期 -, 页码 119-127出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2013.09.016
关键词
Solid lubrication; Self-lubricating composites; Powder metallurgy; Double pressing/double sintering
资金
- CNPq
- BNDES
- FINEP
- FAPESC
- Embraco SA
- Capes
This work presents the effect of a double pressing/double sintering technique on the sliding wear of selflubricating composites. The matrix composition was based on that of a Fe-Mo-C-Si alloy, and the solid lubricants were h-BN and graphite. Sliding tests were carried out first at a constant load. Subsequently, scuffing tests with loading steps of 7 N/10 min were also performed. The wear rates of both specimens and counter-bodies and the average friction coefficient were slightly affected by the compaction technique. DPDS specimens showed higher scuffing resistance. The scuffing resistance depends to a great extent on the mechanical sup.port provided by the matrix. DPDS significantly reduced the subsurface porosity and: as a consequence, the scuffing resistance. (C) 2013 Elsevier Ltd. All rights reserved.
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