ZHANG Kaihong1,2, GAO Yimin1* , CHEN Liang1, ZHAO Sanmei3, LI Lin2, WANG Juan2
(1. State Key Laboratory of Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, 710049, China 2. Guangzhou Research Institute of Non0ferrous Metals, Guangzhou, 510651, China 3. School of Materials Science and Engineering, Central South University, Changsha 410083, China )
Abstract: WC reinforced high-Cr white cast iron matrix composites with honeycomb-shaped ceramic plates are prepared by the common infiltration casting technique. Structure and phases of the interface are investigated with optical microscope and X-ray diffraction (XRD). The dissolution and diffusion of the WC particles in the hot metal form an interlayer, which ensure metallurgical bonding of the interface between the high-Cr white cast iron and the particles. Wear performance of the composite with honeycomb hole are studied on three-body abrasive wear tester. The results show that the wear volume of the composite decreases gradually in the test. Comparing to heat-treated high-Cr cast iron, wear resistance of the composite increases obviously. As-cast composites has comparable wear resistance as the heat-treated composites.
Key words: composite; WC particle; three-body abrasive wear behavior
E-mail: ymgao@mail.xjtu.edu.cn
Tribology, Vol. 32, Issue 2, 2012, 176~182
