Microstructure and surface segregation of 3 mol% Y2O3-doped ZrO2 particles

被引：20

作者：

Ii, Seiichiro

Yoshida, Hidehiro

Matsui, Koji

Ohmichi, Nobukatsu

Ikuhara, Yuichi ^{[1
]}

机构：

[1] Univ Tokyo, Sch Engn, Inst Engn Innovat, Tokyo, Japan

[2] Sojo Univ, Fac Engn, Dept Mech Engn, Kumamoto, Japan

[3] Natl Inst Mat Sci, Tsukuba, Ibaraki, Japan

[4] Tosoh Corp, Synth Chem Prod, Shunan, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2006年 / 89卷 / 09期

关键词：

D O I：

10.1111/j.1551-2916.2006.01132.x

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：

Microstructure of a commercial 3 mol% yttria-doped zirconia nano-particulate powder was observed by transmission electron microscopy, and the distribution of yttrium cation was investigated by energy-dispersive X-ray spectroscopy (EDS) with a probe size less than 1 nm. The cross-sectional high-resolution transmission electron microscopy observations revealed that there are two kinds of particles, consisting of single-phase tetragonal and two phases comprising tetragonal and monoclinic. EDS analysis revealed that yttrium cations segregate to the surface of the tetragonal particle. The origin of tetragonal to monoclinic transformation was considered to be due to external stress during the powder milling process.

引用

页码：2952 / 2955

页数：4

共 21 条

[1] MARTENSITIC PHASE-TRANSFORMATION IN ZIRCONIA (ZRO2) .1. METALLOGRAPHIC EVIDENCE [J].