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Method for preparing large-size aluminum oxide-yttrium aluminum garnet eutectic ceramic through horizontal orientation zone melting crystallization
The invention provides a method for preparing large-size aluminum oxide-yttrium aluminum garnet eutectic ceramic through horizontal orientation zone melting crystallization, and relates to the method for preparing the large-size aluminum oxide-yttrium aluminum garnet eutectic ceramic. The method solves the problems that the number of growth defects is large, and the eutectic quality is poor in the excising preparing process of the large-size eutectic ceramic. The method includes the steps of ceramic mixing, material melting, seeding, cooling and annealing. The method integrates the advantages of a directional crystallizing method and a vertical zone melting method for growth of crystal, the prepared aluminum oxide-yttrium aluminum garnet eutectic ceramic is made to have the advantages of being large in size, less in defect, high in hardness, remarkable in normal-temperature and high-temperature mechanical property, high in heat stability, easy to machine and the like. The method is used for preparing the large-size aluminum oxide-yttrium aluminum garnet eutectic ceramic.
Method for preparing large-size aluminum oxide-yttrium aluminum garnet eutectic ceramic through horizontal orientation zone melting crystallization
The invention provides a method for preparing large-size aluminum oxide-yttrium aluminum garnet eutectic ceramic through horizontal orientation zone melting crystallization, and relates to the method for preparing the large-size aluminum oxide-yttrium aluminum garnet eutectic ceramic. The method solves the problems that the number of growth defects is large, and the eutectic quality is poor in the excising preparing process of the large-size eutectic ceramic. The method includes the steps of ceramic mixing, material melting, seeding, cooling and annealing. The method integrates the advantages of a directional crystallizing method and a vertical zone melting method for growth of crystal, the prepared aluminum oxide-yttrium aluminum garnet eutectic ceramic is made to have the advantages of being large in size, less in defect, high in hardness, remarkable in normal-temperature and high-temperature mechanical property, high in heat stability, easy to machine and the like. The method is used for preparing the large-size aluminum oxide-yttrium aluminum garnet eutectic ceramic.
Method for preparing large-size aluminum oxide-yttrium aluminum garnet eutectic ceramic through horizontal orientation zone melting crystallization
NIE YING (Autor:in) / ZHANG MINGFU (Autor:in) / LIU YANG (Autor:in) / WANG WENJUN (Autor:in) / ZHAO YEQUAN (Autor:in)
08.07.2015
Patent
Elektronische Ressource
Englisch
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