Tribological behaviors of in situ TiB₂ ceramic reinforced TiAl-based composites under sea water environment

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• 作者：Long Wang^a ; ^b ; Jun Cheng^a ; ^{chengjun@licp.cas.cn} ; Zhuhui Qiao^a ; Jun Yang^a ; ^{jyang@lzb.ac.cn} ; ^{jyang@licp.cas.cn} ; Weimin Liu^a
• 关键词：B. Composites ; C. Wear resistance ; D. TiB2
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：43
• 期：5
• 页码：4314-4323
• 全文大小：4831 K
• 卷排序：43

文摘

In this paper, the tribological behaviors of 20 and 40 vol% in situ TiB2 reinforced TiAl-based composites sliding against SiC balls were investigated in artificial sea water, and TiAl alloy was also studied as a comparison. The results showed that the TiAl-TiB2 composites are lubricated in artificial sea water and TiB2 is effective to improve the wear resistance of the TiAl alloy. Also, it was found that the tribological behaviors have a dependency on the applied loads and sliding speeds. Worn surface morphologies and composition together with electrochemical behaviors of the materials were evaluated and related to the tribological behaviors.