Microstructure and mechanical strength of Ti3AlC2 joints bonded using oxides as interlayer

被引：5

作者：

Tan, Yongqiang ^{[1
]}

Li, Sigong ^{[2
]}

Chen, Chen ^{[1
]}

Han, Xiaochun ^{[1
]}

Xue, Jiaxiang ^{[2
]}

Liu, Tong ^{[2
]}

Zhou, Xiaosong ^{[1
]}

Peng, Shuming ^{[1
]}

Zhang, Haibin ^{[1
]}

机构：

[1] China Acad Engn Phys, Inst Nucl Phys & Chem, Innovat Res Team Adv Ceram, Mianyang 621900, Sichuan, Peoples R China

[2] China Gen Nucl Power Corp CGN, China Nucl Power Technol Res Inst, Dept ATF R&D, Shenzhen 518026, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2019年 / 45卷 / 14期

关键词：

Ti3AlC2; Ceramic joining; Oxides; Diffusion bonding; Shear strength; HIGH-TEMPERATURE OXIDATION; TI3SIC2; BEHAVIOR; TI2ALC; EVOLUTION; CERAMICS; ALUMINUM; PROGRESS; PHASES;

D O I：

10.1016/j.ceramint.2019.05.282

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：

Ti3AlC2 ceramics were successfully joined with TiO2 and Nb2O5 respectively as interlayers via solid-state diffusion bonding at 1300 degrees C. The joints bonded with TiO2 and Nb2O5 exhibit distinct microstructures. Two continuous thin Al2O3 oxidation layers with a thickness around 1 mu m were formed in the joints bonded with TiO2. Between the oxidation layers there exists a dense oxycarbide (TiC1-xOx) layer. For the joint bonded with Nb2O5, a dense bonding layer with Nb2AlC and Nb4AlC3 grains surrounded by thin Al2O3 oxidation layers at the grain boundaries were obtained. The shear strength of the final joints shows clear dependences on both the thickness and microstructure of the joints. Smaller joint thickness and the microstructure with complex phases favour for higher shear strength. Those result implies that bonding with oxides is a practical and efficient method for joining Ti3AlC2.

引用

页码：17258 / 17261

页数：4

共 29 条

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