Structure and properties of nanocrystalline rare earth bulks prepared by spark plasma sintering

被引：1

作者：

Lu Nianduan ^{[1
]}

Song Xiaoyan ^{[1
]}

Liu Xuemei ^{[1
]}

Zhang Jiuxing ^{[1
]}

机构：

[1] Beijing Univ Technol, Chinese Minist Educ, Key Lab Adv Funct Mat, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2009年 / 27卷 / 06期

基金：

中国国家自然科学基金;

关键词：

spark plasma sintering; ultrafine nanocrystalline bulk; physical property; rare earths; HEAT-CAPACITY; MECHANISM; BEHAVIOR; GROWTH; METALS; SIZE;

D O I：

10.1016/S1002-0721(08)60370-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of rare earth bulks with the ultrafine nanocrystalline structure were prepared by applying an "oxygen-free" (an environmental oxygen concentration less than 0.5 ppm) in-situ synthesis system, where the inert-gas condensation was combined with the spark plasma sintering technology into an entirely closed system. The thermal and mechanical properties of the prepared ultrafine nanocrystalline bulks were characterized and compared with those of the raw polycrystalline bulks. It was found that the specific heat capacity, the microhardness, and the elastic modulus of the ultrafine nanocrystalline rare earth bulks were significantly increased from the conventional polycrystalline bulks.

引用

页码：961 / 966

页数：6

共 19 条

[1] Rare-earth-doped lanthanum-gallium-sulfide-oxide glasses as new optically operated materials [J].