Dilatometry of ball milled nickel nano powder during NonIsothermal sintering

被引：3
|
作者：
Panigrahi, B. B. [1 ]
Das, K.
Godkhindi, M. M.
机构：
[1] Korea Inst Stand & Sci, Div Metrol Emerging Technol, Taejon 305340, South Korea
[2] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
来源：
SCIENCE OF SINTERING | 2007年 / 39卷 / 01期
关键词：
sintering; dilatometry; diffusion; grain growth;
D O I：
10.2298/SOS0701025P
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 attempts to evaluate the sintering mechanisms of ball milled nanocrystalline nickel during nonisothermal heating. Samples showed a sintered density of 91.2% (theoretical) and grain growth up to 414 nm at 1273K. The activation energies of 12.4, 32.0 and 51.6 kJ/mol were found for viscous flow, lattice diffusion and grain boundary diffusion mechanisms respectively. Sintering was found to be controlled by interface reactions involving surface and grain boundary diffusions.
引用
收藏
页码：25 / 29
页数：5
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