Preparation and grain-growth of magnesia-alumina spinel/yttrium aluminum garnet composite fibers.

Autor:	Ma, Xiaoling
Další autoři:	Lv, Zhenlin Tan, Hongbin Nan, Jiao Wang, Caixia
Jazyk:	angličtina
Předmět:	články journal articles yttrium hliník granát kompozitní vlákna mechanismus růstu zrna magnesia-alumina spinel yttrium aluminum garnet composite fibers grain growth mechanism
Druh dokumentu:	Non-fiction
ISSN:	0862-5468
Abstrakt:	Abstract: Magnesia-alumina spinel/yttrium aluminum garnet composite fibers were prepared by sol-gel method. The spinnability of precursor sol remarkably depended on the addition amount of polyvinylpyrrolidone. Long gel fibers, with 80 cm in length, were obtained by adding 28 wt % spinning additive. The phases of composite fibers were magnesia-alumina spinel and yttrium aluminum garnet after heating at 1400°C for 2h. The Mg iron can hinder the yttrium aluminum garnet grain growth by solute drag and grain boundary pinning. The grain growth exponent was about 3.7 at 1600°C.
Databáze:	Katalog Knihovny AV ČR
Externí odkaz:	Plný text