| 摘要 |
PURPOSE:To provide the subject sintered compact of high impact resistance having good heat resistance and low expansion coefficient, thus useful for diesel engine filters, etc., containing a specified amount of cordierite. CONSTITUTION:The objective sintered compact comprising (A) 5 to 30wt.% of cordierite (2MgO.2Al2O3.5SiO2), pref. synthetic cordierite and (B) the rest of aluminum titanate. The component B is pref. synthetic aluminum titanate which is prepared by mixing 2 to 10wt.% of clay or petalite (Li2O.Al2O3.8SiO2) with powder consisting of Al2O3 and TiO2 at the molar ratio 1:1 followed by baking at >=1550 deg.C. Furthermore, incorporation of 0.5 to 10 pts.wt. of zircon (ZrO2.SiO2) as an aluminum titanate decomposition inhibitor into 100 pts.wt. of the present sintered compact will provide said sintered compact with a resistance to thermal hysteresis, leading to its longer working life. |
