Floating zone growth and high-temperature hardness of NbB2 and TaB2 single crystals

被引：63

作者：

Otani, S

Korsukova, MM

Mitsuhashi, T

机构：

[1] Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 305, Japan

[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

JOURNAL OF CRYSTAL GROWTH | 1998年 / 194卷 / 3-4期

关键词：

D O I：

10.1016/S0022-0248(98)00691-5

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Single crystals of NbB2 and TaB2, the Va group diborides, were prepared by the floating zone method. The crystals, free of subgrain boundaries, were obtained by controlling the molten zone composition. The crystals did not have preferential growth directions, though the IVa and VIa group diboride crystals preferentially grow normal and parallel to the c-axis of the hexagonal lattice, respectively. Their growth directions were consistent with anisotropy in their high-temperature hardness. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：430 / 433

页数：4

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