MICROHARDNESS STUDIES IN GEL-GROWN ADP AND KDP SINGLE-CRYSTALS

被引：30

作者：

SENGUPTA, S

SENGUPTA, SP

机构：

[1] Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Calcutta

来源：

BULLETIN OF MATERIALS SCIENCE | 1992年 / 15卷 / 04期

关键词：

MICROHARDNESS; ELASTIC CONSTANT; AMMONIUM DIHYDROGEN ORTHOPHOSPHATE; POTASSIUM ORTHOPHOSPHATE;

D O I：

10.1007/BF02747642

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microhardness studies were carried out on (100) faces of gel-grown ADP and KDP single crystals. Slip lines were observed on (100) face of ADP crystal at the corners of the impressions. Microcracks around the indentation were found on (100) fare of KDP crystal from 10 g load which spread out as the load increased. Vickers hardness number H(upsilon) decreased with increase in load. DELTA-H(upsilon) at 50 g load for solution-grown crystals and gel-grown crystals (present case) was determined. Work hardening index n for both ADP and KDP crystals was less than 2 showing soft-material characteristics. Using Wooster's empirical relation, values of C-11 from hardness were calculated and found to be close to the reported ones.

引用

页码：333 / 338

页数：6

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