Crystallization behavior and thermal properties of B2O3-containing MgO-Al2O3-SiO2-Li2O glass-ceramic and its wettability on Si3N4 ceramic
Crystallization behavior and thermal properties of B2O3-containing MgO-Al2O3-SiO2-Li2O glass-ceramic and its wettability on Si3N4 ceramic
复制标题
含B2O3 MgO-Al2O3-SiO2-Li2O微晶玻璃的结晶行为、热性能及其对Si3N4陶瓷的润湿性
DOI：
10.1016/j.jeurceramsoc.2018.12.002
复制
发表时间：
2019
影响因子：
5.7
通讯作者：
Lu Chengjie
中科院分区：
文献类型：
--
作者：
Sun Liangbo;Liu Chunfeng;Fang Jian;Zhang Jie;Lu Chengjie
为了实现Si3N4陶瓷的连接，对原始玻璃进行晶化处理，制备了含B2O3的MgO-Al_2O_3-SiO_2-Li_2O系微晶玻璃。研究了B_2O_3含量对MgO-Al_2O_3-SiO_2-Li_2O-B_2O_3玻璃的析晶行为、热膨胀系数和软化温度的影响。结果表明，随着B2O含量的增加，玻璃的玻璃化转变温度和析晶温度降低。在735 °C和840 °C热处理后的微晶玻璃中分别检测到了γ-锂辉石固溶体，而在1000 °C热处理后析出了-锂辉石共存的固溶体和镁橄榄石。此外，通过控制成分和晶化处理，微晶玻璃的CTE可以与Si3N4相匹配。此外，接触角测量证实微晶玻璃在Si3N4基片上具有良好的润湿性，可作为连接Si3N4陶瓷的候选材料。
B2O3-containing MgO-Al2O3-SiO2-Li2O glass-ceramics were fabricated via crystallization treatment of primal glasses for the purpose of joining Si3N4ceramics. The effects of B2O3content on the crystallization behavior, coefficient of thermal expansion and softening temperature of MgO-Al2O3-SiO2-Li2O-B2O3glasses were investigated. The results reveal that the glass transition temperature and the crystallization temperature of the glasses decrease with the increasing B2O3content. 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 Si3N4substrate, which can be considered as the candidate materials for joining Si3N4ceramics.