DELAYED FAILURE IN CHEMICALLY VAPOR-DEPOSITED ZNSE

被引：7

作者：

MCKINNEY, KR

MECHOLSKY, JJ

FREIMAN, SW

机构：

[1] Naval Research Laboratory, Washington, District of Columbia

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1979年 / 62卷 / 7-8期

关键词：

D O I：

10.1111/j.1151-2916.1979.tb19072.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：

Room‐temperature delayed failure of C VD ZnSe was tested in 4‐point flexure. Fracture surfaces of specimens exhibiting delayed failure, i.e. failing after some time under a fixed load, showed an intergranular region of fracture, surrounding a mechanically induced flaw. This intergranular region was attributed to slow crack growth and the remaining transgranular fracture to high‐velocity crack propagation. This behavior contrasts with that of specimens failing during loading, i.e. with little or no slow crack growth, which typically exhibited only transgranular failure, as was also observed in bend tests of specimens loaded to failure. Actual times to failure fell between failure‐time predictions based on single‐crystal and polycrystal‐line slow crack growth data, but were much closer to that for the single crystal. Copyright © 1979, Wiley Blackwell. All rights reserved

引用

页码：336 / 340

页数：5

共 7 条

[1] COPPOLA JA, 1971, THESIS PENNSYLVANIA
[2] FRACTURE-MECHANICS STUDY OF ZNSE FOR LASER WINDOW APPLICATIONS
EVANS, AG
JOHNSON, H
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1975, 58 (5-6) : 244 - 249
[3] INFLUENCE OF MICROSTRUCTURE ON CRACK-PROPAGATION IN ZNSE
FREIMAN, SW
MECHOLSKY, JJ
RICE, RW
WURST, JC
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1975, 58 (9-10) : 406 - 409
[4] GRAVES GA, 1975, 19 U DAYT RES I MONT
[5] Randall PN, 1967, 410 AM SOC TEST MAT, P88
[6] RICE RW, 1974, SURFACES INTERFACES, V7, P439
[7] WIEDERHORN SM, 1974, FRACTURE MECHANICS C, V2, P613

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