Low-temperature spark plasma sintering of NiO nanoparticles

被引：13

作者：

Chaim, Rachman ^{[1
]}

Reshef, Ram ^{[1
]}

Liu, Guanghua ^{[2
]}

Shen, Zhijian ^{[2
]}

机构：

[1] Technion Israel Inst Technol, Dept Mat Engn, IL-32000 Haifa, Israel

[2] Stockholm Univ, Dept Mat & Environm Chem, Arrhenius Lab, S-10691 Stockholm, Sweden

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 06期

基金：

瑞典研究理事会;

关键词：

Spark plasma sintering; Densification; Nanocrystalline; Particle sliding; NiO; LATTICE-PARAMETER; DEFORMATION; MAPS; DENSIFICATION;

D O I：

10.1016/j.msea.2010.11.050

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

NiO nanoparticles of 20 nm in diameter were spark plasma sintered between 400 degrees C and 600 degrees C for 5 and 10 min durations. Application of 100 MPa pressure from room temperature resulted in densities between 75% and 92%. The final grain size was between 26 nm and 68 nm. Lower densities were recorded when 100 MPa was applied at the SPS temperature. Two shrinkage rate maxima of similar to 3.4 x 10(-3) s(-1) and similar to 2 x 10(-3) s(-1) were observed around 390 +/- 10 degrees C and at the SPS temperature. The two shrinkage rate maxima were related to densification by particle sliding followed by diffusional grain boundary sliding during the heating. The strong effects of the surface and interfacial processes which are active during the SPS were highlighted. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2936 / 2940

页数：5

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