A novel glass-ceramic of Li₂O-MgO-Al₂O₃-SiO₂ was developed to join porous Si₃N₄ ceramic itself for the first time. The crystallization kinetic and the microstructure evolution of the glass-ceramic were investigated. The crystallization activation energy E and Avrami exponent n illustrated that the glass-ceramic showed a high crystallinity and surface crystallization behaviour. The β- and γ- LiAlSi₂O₆ phases coexisted in the glass-ceramic and two minor phases of Mg₂SiO₄ and MgAl₂O₄ also precipitated. The porous Si₃N₄ was joined to itself successfully by using this glass-ceramic. A net-like LiAlSi₂O₆/MgAl₂O₄ glass-ceramic interlayer and an infiltration layer of glass/Si₃N₄ were formed in the joint. According to shear testing, the joint was reliable at room temperature and high temperature (850 °C). It demonstrates the feasibility of joining porous non-oxide ceramics by using glass-ceramic interlayers.

开发了一种新型的Li ₂ O-MgO-Al ₂ O ₃ -SiO ₂微晶玻璃，以首次将多孔Si ₃ N ₄陶瓷本身连接起来。研究了微晶玻璃的结晶动力学和微观结构演变。结晶活化能E和Avrami指数n说明玻璃陶瓷显示出高结晶度和表面结晶行为。β-和γ-LiAlSi _2个ö ₆相在玻璃-陶瓷和Mg的两个次要相共存₂的SiO ₄和的MgAl ₂ ö ₄也沉淀了。通过使用该玻璃陶瓷，多孔Si ₃ N ₄成功地自身结合。在接合处形成网状的LiAlSi ₂ O ₆ / MgAl ₂ O ₄玻璃陶瓷中间层和玻璃/ Si ₃ N ₄的浸润层。根据剪切测试，该接头在室温和高温（850°C）下均可靠。它证明了通过使用玻璃陶瓷中间层连接多孔非氧化物陶瓷的可行性。