INFLUENCE OF CHROMIUM AND TITANIUM-OXIDE DOPANTS ON THE REAL STRUCTURE AND THE MECHANICAL-PROPERTIES OF CORUNDUM SINGLE-CRYSTALS

被引：5

作者：

GOSCINSKA, T

AULEYTNER, J

机构：

[1] STANISLAW STASZIC UNIV MIN & MET,INST NEW CONVERS ENERGY,CRACOW,POLAND

[2] POLISH ACAD SCI,INST PHYS,PL-00656 WARSAW,POLAND

来源：

KRISTALL UND TECHNIK-CRYSTAL RESEARCH AND TECHNOLOGY | 1979年 / 14卷 / 07期

关键词：

D O I：

10.1002/crat.19790140705

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The real structure and the mechanical properties of pure and doped corundum single crystals have been investigated. The single crystals were obtained by the Verneuil‐method. The results allow to propose two different models concerning the influence of the chromium and titanium oxide on the properties of corundum single crystals. Optimum concentration of the chromium oxide impurities was approximately determined, from which corundum single crystals with higher hardness can be obtained. It was stated that titanium oxide impurities with some concentrations made the crystals more fragile without plastically changes in the region of the individual mosaic blocks. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：783 / 795

页数：13

共 27 条

[1]

AULEYTNER J, 1965, TEORIA DYSLOKACJI

[2]

AULEYTNER J, 1964, RENTGENOWSKIE METODY

[3] ELECTRON MICROSCOPY AND DIFFRACTION OF SYNTHETIC CORUNDUM CRYSTALS .2. DISLOCATIONS AND GRAIN BOUNDARIES IN IMPURITY-DOPED ALUMINIUM OXIDE [J].