Microstructure and tribological properties of SiC matrix composites infiltrated with an aluminium alloy

作者：Wang, Wei; Du, An; Fan, Yongzhe; Zhao, Xue; Wang, Xinghua; Ma, Ruina^*; Li, Qiang^*

来源：Tribology International, 2018, 120: 369-375.

DOI：10.1016/j.triboint.2018.01.001

• Infiltration
• Ti3Si(Al)C-2
• Tribological properties
• Microstructure

A simple melt infiltration process was adopted to form Ti3Si(Al)C-2 on the surface of SiC ceramics. The Ti3Si(Al)C-2 content increases with longer infiltration at 900 degrees C. At 1000 degrees C, the reaction layer contains mainly TiC and SiC. The tribological properties of the samples were investigated by wear testing. The hardness of the SiC ceramic with a Ti3Si(Al)C-2 layer is 610 +/- 82 HV, while its friction coefficient is 0.34-0.38, which is 75% that of pristine SiC. The Ti3Si(Al)C-2 layer produced a good antifriction effect because plastic deformation occurs in the Ti3Si(Al)C-2, and Ti3Si(Al)C-2 debris continually fills in the grooves during wear.

• 出版日期2018-4
• 单位燕山大学; 河北工业大学