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Crystallization behavior and thermal properties of B2O3–containing MgO-Al2O3-SiO2-Li2O glass-ceramic and its wettability on Si3N4 ceramic
Journal of the European Ceramic Society ( IF 5.8 ) Pub Date : 2018-12-01 , DOI: 10.1016/j.jeurceramsoc.2018.12.002
Liangbo Sun , Chunfeng Liu , Jian Fang , Jie Zhang , Chengjie Lu

B2O3-containing MgO-Al2O3-SiO2-Li2O glass-ceramics were fabricated via crystallization treatment of primal glasses for the purpose of joining Si3N4 ceramics. The effects of B2O3 content on the crystallization behavior, coefficient of thermal expansion and softening temperature of MgO-Al2O3-SiO2-Li2O-B2O3 glasses were investigated. The results reveal that the glass transition temperature and the crystallization temperature of the glasses decrease with the increasing B2O3 content. It also demonstrates that γ-spodumene solid solution is detected in the glass-ceramics after heat treatment at 735 °C and 840 °C, respectively, whereas the heat treatment at 1000 °C results in the precipitation of β/γ-spodumene coexisting phases solid solution and forsterite. Additionally, by controlling the composition and crystallization treatment, the CTEs of glass-ceramics can be matched with the Si3N4. Furthermore, contact angle measurement confirms that the glass-ceramics possess a good wettability on the Si3N4 substrate, which can be considered as the candidate materials for joining Si3N4 ceramics.



中文翻译:

含B 2 O 3的MgO-Al 2 O 3 -SiO 2 -Li 2 O玻璃陶瓷的结晶行为,热性能及其在Si 3 N 4陶瓷上的润湿性

为了接合Si 3 N 4陶瓷,通过对原玻璃进行结晶处理,制造了含有B 2 O 3的MgO-Al 2 O 3 -SiO 2 -Li 2 O玻璃陶瓷。B 2 O 3含量对MgO-Al 2 O 3 -SiO 2 -Li 2 O-B 2 O 3的结晶行为,热膨胀系数和软化温度的影响眼镜进行了调查。结果表明,玻璃的转变温度和结晶温度随着B 2 O 3含量的增加而降低。这也表明在分别于735°C和840°C的热处理后在玻璃陶瓷中检测到γ-锂辉石固溶体,而在1000°C的热处理导致β/γ-锂辉石共存相的析出固溶体和镁橄榄石。另外,通过控制组成和结晶处理,可以使玻璃陶瓷的CTE与Si 3 N 4匹配。此外,接触角测量证实了玻璃陶瓷在Si 3 N 4上具有良好的润湿性。基板,可以考虑用作连接Si 3 N 4陶瓷的候选材料。

更新日期:2018-12-01
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