Fine ceramics require submicron-sized powders. "Silica powder with an average particle size of 3μ."
Introduction to Micro Silica Powder CFP-M3: Unlike traditional ceramics, which were made by sintering particles of about several tens of micrometers, fine ceramics have the following characteristics: 1. The particles of the sintered body can be reduced to several micrometers. 2. Dimensional accuracy has improved. 3. It has become possible to manufacture thin films, fibrous materials, and fine particles. 4. The pore size control of porous bodies has become precise. This expansion of the technological range of fine ceramics is a notable feature. Even with the same material, different forms lead to different functions, and consequently different applications, which expand. One of the significant differences between fine ceramics and traditional ceramics lies in the extent to which artificial processing is applied to naturally occurring raw materials. Therefore, it is not an exaggeration to say that research on fine ceramics begins with the synthesis of starting raw material powders and the study of fine powders. The general characteristics required for raw materials to obtain high-performance fine ceramic sintered bodies are said to be: - Being fine particles, - No particle agglomeration, - A narrow particle distribution (uniform particle size), - A particle shape with low anisotropy (spherical), - Chemically high purity.
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The necessity of these characteristics varies depending on the sintering method, but it is particularly important for refractory nitrides and carbides. Furthermore, to obtain a high-density sintered body, it is preferable to achieve a high-density molded body, and good moldability is also a necessary condition. The raw powder for fine ceramics manufacturing is synthesized through gas-phase, liquid-phase, and solid-phase reactions to meet the above conditions and is purified as needed. Regarding the micronization of particle size, there are methods for grinding larger particles and methods for synthesizing fine powders from the beginning. For representative fine ceramic powders, the microstructure and defects of the sintered body are strongly influenced by the primary particle characteristics such as the composition of the raw powder (purity, type and content of impurities), crystal structure, particle size and size distribution, particle shape, and surface morphology (chemical and physical). At the same time, the properties of particle aggregates and the properties of the dispersion system are also important. Therefore, ceramic raw materials are often subjected to grinding treatment as part of raw material preparation. In the case of fine ceramics, micronization in the submicron range is necessary.
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Fine ceramics in general
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Our company is a manufacturer and seller of ceramic raw materials with a history of over 80 years. In the vicinity of Seto City in Aichi Prefecture, the hometown of ceramics, there are large deposits of high-quality silica sand, which is the main raw material for ceramics and glass. Our main business is to wash, crush, remove impurities, and sort the silica sand to meet customer demands. Additionally, we have successfully developed processing technology to utilize feldspar from the northeastern part of Aichi Prefecture as a raw material for glass.