Structure and bulk modulus of high-strength boron compounds

被引：36
作者：
Lundstrom, T
机构：
[1] Institute Chemistry, 531, S-751 21, Uppsala
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 1997年 / 133卷 / 01期
基金：
瑞典研究理事会;
关键词：
D O I：
10.1006/jssc.1997.7320
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The structures and homogeneity ranges of B6O1-x and B12S2-x were studied using Rietveld analysis of powder X ray patterns. The oxygen content of boron suboxide decreases with temperature int the range 1250-1450 degrees C, Stoichiometric boron suboxide cannot be prepared from amorphous or alpha-rh boron and B2O3 at ambient pressure. Significantly higher pressures are required, The boron subsulfide was found to be stable from B12S<1 to B12S1.3 at 1400-1600 degrees C. Semiempirical bulk modulus calculations are reported for hard icosahedral boron-rich compounds and diamond-like tetrahedrally coordinated boron compounds. In connection with this the structure of diamond-like B2O is discussed. (C) 1997 Academic Press.
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页码：88 / 92
页数：5
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