Directed Laser Processing of Compacted Powder Mixtures Al2O3-TiO2-Y2O3

被引：5

作者：

Vlasova, M. ^{[1
]}

Kakazey, M. ^{[1
]}

Aguilar, P. A. Marquez ^{[1
]}

Juarez-Arellano, E. A. ^{[2
]}

Tapia, R. Guardian ^{[1
]}

Stetsenko, V. ^{[3
]}

Bykov, A. ^{[3
]}

Lakiza, S. ^{[3
]}

Ragulya, A. ^{[3
]}

机构：

[1] Autonomous Univ State Morelos CIICAp UAEM, Ctr Invest Engn & Appl Sci, Cuernavaca, Morelos, Mexico

[2] Univ Papaloapan, Inst Quim Aplicada, Tuxtepec 68301, Oaxaca, Mexico

[3] Natl Acad Sci Ukraine, Inst Problems Mat Sci, UA-252680 Kiev, Ukraine

来源：

SCIENCE OF SINTERING | 2013年 / 45卷 / 03期

关键词：

Al2O3; TiO2; Y2O3; powders; Laser synthesis; Ceramics; ALUMINUM-GARNET Y3AL5O12; MECHANICAL-PROPERTIES; LUMINESCENCE PROPERTIES; THERMAL-STABILITY; MICROSTRUCTURE; CERAMICS; Y2TI2O7;

D O I：

10.2298/SOS1303247V

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：

The phase formation, microstructure and surface texture of laser treated ternary powder mixtures of Al2O3-TiO2-Y2O3 had been studied. Rapid high temperature heating and subsequent rapid cooling due to the directed movement of the laser beam forms concave ceramic tracks. Phase composition and microstructure of the tracks depends on the Al2O3 content and the TiO2/Y2O3 ratio of the initial mixtures. The main phases observed are Y3Al5O12, Y2Ti2O7, Al2O3 and Al2TiO5. Due to the temperature gradient in the heating zone, complex layered structures are formed. The tracks consist of three main layers: a thin surface layer, a layer of crystallization products of eutectic alloys, and a lower sintered layer. The thickness of the crystallization layer and the shrinkage of the irradiation zone depend on the amount of Y3Al5O12 and Al2O3 crystallized from the melt.

引用

页码：247 / 259

页数：13

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