| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a filter having a high dimensional precision and excelling in vibration resistance and thermal shock resistance by mixing and sintering aluminum titanate, aluminum titanate, of a smaller diameter, or alumina, titania of smaller size than the former, and a SiO2 component under specified conditions. SOLUTION: First particles consisting of aluminum titanate, second particles consisting of aluminum titanate, alumina or titania of an average particle diameter smaller than that of the first particles, and a SiO2 component are mixed and sintered to form a waste gas filter consisting of a honeycomb structure. At that time, the weight of the first particles is made larger than that of the second particles, and the SiO2 component is made about 2-9wt.% of the total weight of the mixture. In this way, the dimensional precision of the filter is made good, and vibration resistance and thermal shock resistance are improved to enhance durability and reliability.</p> |
