Spark Plasma Sintering of high-density fine-grained Y2.5 Nd0.5Al5O12 + SiC composite ceramics

被引：16

作者：

Golovkina, L. S. ^{[1
]}

Orlova, A. I. ^{[1
]}

Chuvil'deev, V. N. ^{[1
]}

Boldin, M. S. ^{[1
]}

Lantcev, E. A. ^{[1
]}

Nokhrin, A. V. ^{[1
]}

Sakharov, N. V. ^{[1
]}

Zelenov, A. Yu. ^{[1
]}

机构：

[1] Lobachevsky State Univ Nizhny Novgorod, Nizhnii Novgorod 603950, Russia

来源：

MATERIALS RESEARCH BULLETIN | 2018年 / 103卷

基金：

俄罗斯科学基金会;

关键词：

Ceramic composites; Garnet; Sintering; Microstructure; Grain boundaries; Diffusion; YTTRIUM-ALUMINUM-GARNET; FERRITE GARNETS; IRRADIATION; ACTINIDES; EXPANSION; STABILITY; CARBIDE; POWDERS; ND;

D O I：

10.1016/j.materresbull.2018.03.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spark Plasma Sintering (SPS) has been used to produce samples of fine-grained composites Y-2.5 Nd0.5Al5O12 + x wt.% alpha-SiC (x = 1020) with similar to 98-99% density. The microstructure of the composites has been studied, as well as the impact of alpha-SiC particles on the mechanical properties and kinetics of composite sintering. The introduction of the alpha-SiC part has been demonstrated to form a more fine-grained structure and under the given SPS conditions change the sintering mechanism in ceramics. The study has also demonstrated that introduction of alpha-SiC particles into garnet results in formation of internal stress fields, which, in turn, leads to a decrease in the activation energy of sintering of fine-grained composites at high temperatures.

引用

页码：211 / 215

页数：5

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