Improvement in mechanical/physical properties of TiC-based ceramics sintered at 1500 °C for inert matrix fuels

被引：38

作者：

Xue, Jia-Xiang ^{[1
,2
]}

Liu, Ji-Xuan ^{[3
,4
]}

Zhang, Guo-Jun ^{[3
,4
]}

Zhang, Hai-Bin ^{[1
]}

Liu, Tong ^{[2
]}

Zhou, Xiao-Song ^{[1
]}

Peng, Shu-Ming ^{[1
]}

机构：

[1] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China

[2] China Nucl Power Technol Res Inst, Nucl Fuel Res & Dev Ctr, Shenzhen 518026, Peoples R China

[3] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

[4] Donghua Univ, Res Inst Funct Mat, Shanghai 201620, Peoples R China

来源：

SCRIPTA MATERIALIA | 2016年 / 114卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Titanium carbide (TiC); Titanium silicon carbide (Ti3SiC2); Mechanical properties; Thermal conductivity; Nuclear materials; RADIATION-DAMAGE; NITRIDE; TOLERANCE; TI3ALC2;

D O I：

10.1016/j.scriptamat.2015.11.024

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dense TiC-based ceramics were obtained at 1500 degrees C by hot pressing, benefiting from Ti and Si additives in the TiC matrix. The in-situ formed Ti3SiC2 platelet grains refined TiC grains and reinforced the obtained ceramics. The TiC-20 vol.% Ti3SiC2 ceramic exhibits a much higher flexural strength of 1003 MPa, compared with 450 MPa of the pure TiC ceramic. Owing to the formation of continuous heat-conducting paths by the bridged Ti3SiC2 platelet, a high thermal conductivity over 33 W/m.k was measured in TiC-40 vol.% Ti3SiC2 at 500 degrees C, which is nearly 1.5 times than that in the pure TiC ceramics with a similar grain size. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：5 / 8

页数：4

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