Investigation of the wear behavior of B₄C reinforced Fe/Co matrix composites produced by hot press

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• 作者：Mehmet Ş ; imş ; ir^a ; Kerim Emre &#xd6 ; ksü ; z^b ; Yusuf Ş ; ahin^a ; ^b ; ^{msimsir@cumhuriyet.edu.tr"" rel=""nofollow}
• 关键词：Powder metallurgy ; Boron carbide ; Composite ; Hardness ; Wear
• 刊名：Procedia Engineering
• 出版年：2011
• 出版时间：2011
• 年：2011
• 卷：10
• 期：Complete
• 页码：3203-3209
• 全文大小：491 K

文摘

Diamond tools are widely used for sawing, drilling and grinding materials. The extreme hardness of diamonds and the strength of the diamond/matrix combination make these tools superior. In this experimental study, diamond impregnated in Fe-Co matrix are processed by powder metallurgy method using hot pressing technique. The effects of Fe and boron carbide (B₄C) additions on characteristic of diamond impregnated Co matrix composites have been investigated. The composite reinforced with and without B₄C samples having three different compositions (different Fe / Co ratio) were produced under 25 MPa pressure and sintered at 900 °C temperature. After sintering, hardness test was carried out and wear tests were performed by a pin-on-disc type of wear configuration. The experimental results showed that addition of Fe caused decreasing in the hardness of the matrix, and also reinforcing of B₄C unaffected on the hardness of the composite. It is observed that wear resistance of B₄C reinforced Fe-Co metal matrix composite was greater than that of composite without reinforcement (B₄C). Furthermore, the characterization of produced composites using SEM and EDS analyses is done.