負熱膨脹性填充劑對感光性玻璃陶瓷的製備與性質的影響

Effect of Negative-Thermal-Expansion Filler on the Preparation and Properties of Photosensitive Glass-Ceramics

洪千惠(Chien-Hui Hung)

指導教授 ： 徐錦志

大同大學/工程學院/材料工程學系所/碩士(2006年)

摘要

本實驗是利用嵌入法(incorporation menthod)，在鋰矽酸鹽感光玻璃粉末中混入負膨脹係數的 β-eucryptite (β-E)陶瓷粉末，希望經燒結後可得到具有低熱膨脹係數(CTE)並可感光加工的玻璃陶瓷。
實驗顯示，壓錠比未壓錠試片經過燒結更易保留陶瓷顆粒，但會發生相的改變。30 vol.％β-E＋70 vol.％玻璃(E/G=30/70)的壓錠試片雖然能有效降低CTE，但因玻璃成分的改變而無法有效感光。E/G=10/90的壓錠試片因玻璃含量較高而能有效感光，但因生成LS2，無法有效降低CTE。E/G=20/80的壓錠試片其CTE介於E/G=30/70與E/G=10/90之間。因陶瓷顆粒溶入玻璃中感光性隨燒結溫度升高而降低。

關鍵字

感光玻璃 ； 感光玻璃陶瓷 ； 負熱膨脹係數填充劑 ； 嵌入法

並列摘要

The objective of this is to fabricate low-expansion and photomachinable glass-ceramics by sintering of the powder mixtures of Li2O-SiO2 glass and ceramic filler.
According to the experimental results, the ceramic filler was more resistant to dissolve in glass matrix in compacted samples as compared with noncompacted samples. For the sample composed of 30 vol％ and 70 vol％(E/G=30/70), the thermal expansion coefficient can be reduced while the photosensitivity was reduced. The samples with E/G=10/90 were still photosensitive because of the higher content of the LS glass, while the CTE can’t be effectively decreased due to the formation of lithium disilicate which has a high CTE value (110×10-7K-1).
The CTE values of the samples with E/G=20/80 were between those E/G=30/70 and 10/90. The photosensitivity of the sintered bodies were with the increasing sintering temperature because of the dissolution of β-E and β-S in glass matrix.

並列關鍵字

photosensitive glass ； photosensitive glass-ceramics ； negative CTE filler ； incorporation menthod

參考文獻

協進會, 332 (1988).

[3]S.D. Stookey, “ Photosensitive glass article and composition and

[4]Nicholas F. Borrelli et al., “ Fast response photosensitive opal glasses.”

nucleation in photosensitive glasses,” Journal of Non-Crystalline

Solids 219 80-83 (1997).