Hardness of basaltic glass-ceramics

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Section of Chemistry, Aalborg University, DK-9000 Aalborg, Denmark [1 ]
不详 [2 ]
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来源：
Glass Technol. Euro. J. Glass Sci. Technol. Part A | 2009年 / 4卷 / 189-195期
关键词：
Glass ceramics - Basalt - Differential scanning calorimetry - X ray diffraction;
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摘要：
The dependence of the hardness of basaltic glass-ceramics on their degree of crystallisation has been explored by means of differential scanning calorimetry, optical microscopy, x-ray diffraction, and Vickers indentation. Different degrees of crystallisation in the basaltic glasses were achieved by varying the temperature of heat treatment. The predominant crystalline phase in the glass was identified as augite. It was found that the hardness of the glass phase decreased slightly with an increase in the degree of crystallisation, while that of the augite phase drastically decreased.
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