Synthesis and consolidation behavior of Al/AIN composite powders by reactive RF thermal plasma spraying

被引：11

作者：

Cho, Sung Chul ^{[1
]}

Han, Chulwoong ^{[2
]}

Choi, Hanshin ^{[2
]}

Kim, Hae Sung ^{[3
]}

Jin, Sungho ^{[4
,5
]}

Han, Jun Hyun ^{[1
,4
,5
]}

机构：

[1] Chungnam Natl Univ, Dept Nano Mat Engn, Daejeon 305764, South Korea

[2] Korea Inst Ind Technol, Rare Met Res Grp, Inchon 404254, South Korea

[3] Pusan Natl Univ, Dept Nanomat Engn, Miryang 627706, South Korea

[4] Univ Calif San Diego, Mech & Aerosp Engn, La Jolla, CA 92093 USA

[5] Univ Calif San Diego, Mat Sci & Engn, La Jolla, CA 92093 USA

来源：

POWDER TECHNOLOGY | 2016年 / 287卷

关键词：

Aluminum nitride (AlN); Al/AlN composite; RF thermal plasma spraying; Nano-particle; Sintering; ALUMINUM NITRIDE; MECHANICAL-PROPERTIES; ALN; CERAMICS; MICROSTRUCTURE; CONDUCTIVITY; TEMPERATURE; ALLOYS; GROWTH; MICRO;

D O I：

10.1016/j.powtec.2015.10.029

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Al/AlN composite powders were synthesized using a new technique based on reactive RF thermal plasma spraying, and an investigation of the microstructure and consolidation behavior of the synthesized Al/AlN composite powders revealed that the volume fraction of the AlN particles was higher on the outer layer. Numerous nano-particles were attached to the surface of the Al/AlN composite powders, and the effects that the nanoparticles had on the consolidation of the Al/AlN composite powders are discussed herein. The attached nanoparticles acted as a compaction activator, filling the vacant space among the Al/AlN composite powders during compaction. The as-sprayed and sintered powder compact had a higher hardness value than the ultrasonicated and sintered powder compact due to a lower porosity in addition to the presence of hard AlN nanoparticles. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：395 / 402

页数：8

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