Effect of Mechanical Activation on Ti3AlC2 Max Phase Formation under Self-Propagating High-Temperature Synthesis

被引：17
作者：
Potanin, A. Yu. [1 ]
Loginov, P. A. [1 ]
Levashov, E. A. [1 ]
Pogozhev, Yu. S. [1 ]
Patsera, E. I. [1 ]
Kochetov, N. A. [2 ]
机构：
[1] Natl Univ Sci & Technol MISIS, SHS Res & Educ Ctr MISIS ISMAN, Leninsky Prospect 4, Moscow 119049, Russia
[2] Russian Acad Sci, Inst Struct Macrokinet & Mat Sci, Chernogolovka 142432, Moscow Region, Russia
来源：
EURASIAN CHEMICO-TECHNOLOGICAL JOURNAL | 2015年 / 17卷 / 03期
基金：
俄罗斯科学基金会;
关键词：
SHS; mechanical activation; mechanosynthesis; Ti3AlC2; combustion rate;
D O I：
10.18321/ectj249
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this study, we have investigated the effect of various mechanical activation (MA) modes on phase and structure formation in powder mixtures made up to produce Ti3AlC2 MAX phase. The optimal MA duration has been established which results in the maximum heat release under SHS due to accumulation of structural defects leading to the growth of internal energy. The effect of MA on the character and kinetics of combustion front propagation has been investigated. It was shown that following pretreatment of a powder mixture in a planetary ball mill, the combustion mode changes from stationary to a pulsating combustion and, consequently, the combustion rate decreases. The burning-out of the sample is partial and with interruptions (depressions). Force SHS-pressing technology was used for obtaining of compacted samples with homogeneous structure based on Ti3AlC2.
引用
收藏
页码：233 / 242
页数：10
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