무기 산화물

• Main Authors: KAWAKAMI YOSHITAKA, ANDO HIROYUKI
• Format: Patent
• Language: Korean
• Published: 14.01.2021
• Subjects: BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; STEAM ENGINES; THEIR RELEVANT APPARATUS; TRANSPORTING; WEAPONS

Al, Ce 및 Zr을 구성 원소로서 포함하는 분말 무기 산화물로서, 직경 20㎜를 갖는 원통형 용기에 4.0g의 상기 무기 산화물을 넣고 실온 및 29.4㎫의 압력의 조건하에 30초 동안 단축 성형을 수행함으로써 1.0 내지 1.3 g/㎖의 밀도를 갖는 성형 제품을 제공하고, 그리고 이하의 식에 의해 계산된 바 14.0% 이하의 평균 수축률을 달성하는, 무기 산화물이 제공된다: 평균 수축률(%)=100×{(1-(c)/(a))+(1-(d)/(b))}/2 식 중, 각 기호는 본 명세서에 정의된 바와 같다. Provided is a powder inorganic oxide containing Al, Ce and Zr as constituent elements, that affords a molded product with a density of 1.0 to 1.3 g/ml by placing 4.0 g of the inorganic oxide in a cylindrical container having diameter 20 mm and performing uniaxial molding under conditions of room temperature and pressure of 29.4 MPa for 30 sec., and achieves an average shrinkage percentage of not more than 14.0% as calculated by the following formula: average shrinkage percentage (%)=100×{(1−(c)/(a))+(1−(d)/(b))}/2 wherein each symbol is as defined in the DESCRIPTION.