Effect of Ti5Si3 on wear properties of Ti3Si(Al)C2

被引：29

作者：

Liu, Yonglai ^{[2
]}

Chen, Jixin

Zhou, Yanchun ^{[1
]}

机构：

[1] Chinese Acad Sci, High Performance Ceram Div, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2009年 / 29卷 / 16期

关键词：

Ti3Si(Al)C-2; Ti5Si3; Composites; In situ hot pressing; Wear resistance; TITANIUM-SILICON CARBIDE; THERMAL-EXPANSION ANISOTROPY; SELF-LUBRICATION MECHANISM; TRIBOLOGICAL BEHAVIOR; OXIDATION RESISTANCE; ELEMENTAL POWDERS; BULK CERAMICS; TI3SIC2; FRICTION; SURFACE;

D O I：

10.1016/j.jeurceramsoc.2009.07.012

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Near-fully dense Ti3Si(Al)C-2/Ti5Si3 Composites were synthesized by in situ hot pressing/solid-liquid reaction process under a pressure of 30MPa in a flowing Ar atmosphere at 1580 degrees C for 60 min. Compared to monolithic Ti3Si(Al)C-2, Ti3Si(Al)C2/Ti5Si3 composites exhibit higher hardness and improved wear resistance, but a slight loss in flexural strength (about 26% lower than Ti3Si(Al)C-2 matrix). In addition, Ti3Si(Al)C-2/Ti5Si3 composites maintain a high fracture toughness (K-IC =5.69-6.79 MPa m(1/2)). The Ti3Si(Al)C-2/30 vol.% Ti5Si3 composite shows the highest Vickers hardness (68% higher than that of Ti3Si(Al)C-2) and best wear resistance (the wear resistance increases by 2 orders of magnitude). The improved properties are mainly ascribed to the contribution of hard Ti5Si3 particles, and the strength degradation is mainly due to the lower Young's modulus and strength of Ti5Si3. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：3379 / 3385

页数：7

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