摘要
Wear and corrosion properties of SiC p/graphite reinforcement Cu metal matrix composites (MMCs) fabricated by hot pressing were evaluated in the present study. Electron micrographic observations were conducted to clarify the micro-mechanisms of wear and corrosion. Experimental results indicate that the hardness and wear loss increased with the SiCp content and decreased with the graphite content. The wear loss of Cu/SiC p/graphite MMCs was almost the same as adding graphite more than 5vol%. The material porosity of composites increased with foreign particles (SiC p and/or graphite) content. The composites were immersed in 3.5 wt% NaCl ( pH=6.7) aqueous solutions for potentiodynamic and corrosion rate measurements. The pure Cu exhibited best corrosion resistance, the Cu/SiC p composite showed lower, and the Cu/SiCp/graphite composite occupied the worst. The poor corrosive properties of composites were owing to the galvanic and crevice corrosion, which were caused by residual stress/strain and potential incorporation between additions (SiC p and/or graphite) and Cu matrix. In addition, the corrosive weight loss increased with the increase of SiC p and graphite content.
原文 | ???core.languages.en_GB??? |
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出版狀態 | 已出版 - 2004 |
事件 | European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004 - Nice, France 持續時間: 12 9月 2004 → 16 9月 2004 |
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???event.eventtypes.event.conference??? | European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004 |
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國家/地區 | France |
城市 | Nice |
期間 | 12/09/04 → 16/09/04 |