DISSOLUTION OF SINTERED SILICON-NITRIDE BULK SPECIMENS FOR ELEMENTAL ANALYSIS

被引：4

作者：

HOMEIER, EH ^{[1
]}

BRADLEY, SA ^{[1
]}

KARASEK, KR ^{[1
]}

机构：

[1] ALLIED SIGNAL INC,DES PLAINES,IL 60017

来源：

JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 05期

关键词：

D O I：

10.1007/BF01142028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Heating bulk, sintered silicon nitride samples in an aqueous hydrofluoric-hydrochloric acid mixture is shown to decompose the silicon nitride. Subsequent addition of sulphuric acid and volatilization of fluorides permits total dissolution of the bulk specimens for analysis. The elemental compositions that were determined by inductively coupled plasma atomic emission and atomic absorption spectrometries agreed with the nominal sample composition and confirmed analyses performed by scanning transmission electron microscopy. Neutron activation determinations on the same samples are not believed to be as accurate as the spectrometric determinations. Furthermore, the precision of the neutron activation measurements were less satisfactory, especially for key elements such as yttrium.

引用

页码：1231 / 1234

页数：4

共 7 条

[1] EFFECT OF THERMAL AND STRESS EXPOSURE ON GRAIN-BOUNDARIES OF SILICON-NITRIDE [J].