Nonisothermal sintering of Cr2AlC powder

被引：12

作者：

Rajkumar, Yembadi ^{[1
]}

Rahul, Bapurao ^{[1
]}

Akash, Puppala Ananth ^{[1
]}

Panigrahi, Bharat ^{[1
]}

机构：

[1] Indian Inst Technol Hyderabad, Dept Mat Sci & Met Engn, Sangareddy, Telangana, India

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2017年 / 14卷 / 01期

关键词：

Activation energy; Dilatometer; MAX Phase; Powder; Sintering; MECHANICAL-PROPERTIES; AL-C; MAX PHASES; CERAMICS; OXIDATION; BEHAVIOR; DIFFUSION; CORROSION; TI3ALC2;

D O I：

10.1111/ijac.12617

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：

This work studies the sintering behavior of ultrafine powder of Cr2AlC compound during nonisothermal heating using a dilatometer. Sample exhibits relatively slower densification under pressureless condition where relative density increased from about 61% (green compact) to about 73% during heating up to 1350 degrees C. Axial shrinkage data were analyzed through the volume diffusion and grain boundary diffusion-based sintering models. Estimated activation energy of sintering (352 kJ/mol) for volume diffusion mechanism, was found to be closely matching with the reported activation energy of chromium diffusivity, indicating volume diffusion as a controlling mechanism and chromium as a major diffuser in Cr2AlC.

引用

页码：63 / 67

页数：5

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