Phase relations and lattice constants in the MgO-Al2O3-Ga2O3 system at 1550 degrees C

被引：12

作者：

Stalder, R ^{[1
]}

Nitsch, KH ^{[1
]}

机构：

[1] UNIV GOTTINGEN,MINERAL PETROL INST,D-37077 GOTTINGEN,GERMANY

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1997年 / 80卷 / 01期

关键词：

D O I：

10.1111/j.1151-2916.1997.tb02821.x

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：

Phase relations and lattice constants in the MgO-Al2O3-Ga2O3 system at 1550 degrees C have been determined experimentally. In a large part of this system, only a nonstoichiometric spinel is stable. Compositions as extreme as 12.5 mol% MgO-20.5 mol% Ga2O3-67 mol% Al2O3 for a homogeneous spinel are possible. In the bordering phase diagrams of MgO-Al2O3 and MgO-Ga2O3, the composition of the spinel is as high as 63 mol% Al2O3 or Ga2O3, respectively. The contributions of all simple ionic exchange reactions on the lattice constant of the spinel have been deduced from X-ray diffractometry data.

引用

页码：258 / 260

页数：3

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