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Combinatorial evaluation system for thermal properties of glass materials using a vertical furnace with temperature gradient 
著者:
TODOROKI Shin-ichi
Inoue S.
Matsumoto T.
(出版日: 2002-04-28)
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NIMS成果物 |
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オンラインリソース
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| 言語: |
English |
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Handle URI: https://hdl.handle.net/20.500.11932/28377
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| アブストラクト: |
Critical cooling rate Q for zinc tellurite glass system is
determined based on the time-temperature-transfer (T-T-T) diagrams,
which are compiled by analyzing the crystallized area in the glass
sample libraries annealed simultaneously by a furnace with
temperature gradient. This method reduces the laborious routine
work for preparation, which is needed in the conventional method.
Since the surface/volume ratio of the present samples is large,
their crystallization is mainly governed by heterogeneous
nucleation. Thus, the Q values in this study can be used as a
practical index for the glass products whose surface should be free
of being ground and/or polished, such as fire-polished lenses,
optical fibers and waveguides.
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