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溶胶凝胶法是通过软化学方法剪 裁材料并合成高性能陶瓷的重 要手段,在制备湿敏陶瓷及传感 器方面具有一系列突出的优点,得到了 广泛的应用。本文综述了国内外在这方 面的研究进展。1.引言 溶胶凝胶法制备湿敏陶瓷一般采 用无机盐或金属醇盐为前驱物,将前驱 物溶于溶剂中,加入所需的掺杂物质和 化学添加剂,经水解、缩聚后制成稳定 的溶胶。溶胶经适当处理制得粒度均匀 的陶瓷粉料,经压片、烧结制得多孔湿
Sol-gel method is an important method to tailor materials and synthesize high-performance ceramics through soft chemical methods. It has a series of prominent advantages in preparing humidity-sensitive ceramics and sensors and has been widely used. This article summarizes the research progress in this area at home and abroad. 1. Introduction Sol-gel method for the preparation of moisture-sensitive ceramics commonly used inorganic salt or metal alkoxide as a precursor, the precursor dissolved in a solvent, adding the required doping substances and chemical additives, hydrolysis, polycondensation made of stable Of sol. Sol prepared by appropriate treatment of uniform particle size of ceramic powder, after pressing, sintering porous wet