Effect of pre-aging pH on the formation of yttrium aluminum garnet powder (YAG) via the solid state reaction method

Autor:	Wen-Chuan Fu, Ming-Shyong Tsai, Guang-Mau Liu
Rok vydání:	2007
Předmět:	Aluminium oxides Boehmite Materials science Mechanical Engineering Metals and Alloys Oxide chemistry.chemical_element Mineralogy Phosphor Yttrium law.invention Cerium chemistry.chemical_compound chemistry Mechanics of Materials law Materials Chemistry Calcination Particle size Nuclear chemistry
Zdroj:	Journal of Alloys and Compounds. 440:309-314
ISSN:	0925-8388
DOI:	10.1016/j.jallcom.2006.09.015
Popis:	Yttrium aluminum garnet (YAG) powder was successfully synthesized by a novel solid state reaction method. The starting materials including: yttrium oxide (Y 2 O 3 ), boehmite (AlOOH) and cerium chloride (CeCl 3 ·7H 2 O) are pre-aged at pH 1, 2 and 3, respectively, before calcining. According to the experimental results, the case of pre-aging at pH 1 is the best condition for the formation of YAG powder. The particle size of Y 2 O 3 and AlOOH are reduced by the pre-aging at pH 1. It induces to shorten the diffusion distance of the solid state reaction. The pre-aging at pH 1 process leads the formation of YAG powder via solid state reaction more easily. The emission intensity of the product was increased by the decrease of the pre-aging pH, the increase of the calcination temperature and the increase of the heating time.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3bab675abb0c8034f310d265dc8ce327 https://doi.org/10.1016/j.jallcom.2006.09.015 Zobrazit plný text záznamu Full Text from ScienceDirect