MANUFACTURING METHOD OF HIGHLY HEAT-RESISTANT/HIGH-STRENGTH ALUMINA POROUS BODY,申请号JP20020373425-传众专利搜索

MANUFACTURING METHOD OF HIGHLY HEAT-RESISTANT/HIGH-STRENGTH ALUMINA POROUS BODY

申请公布号：JP2004203654(A)

申请号：JP20020373425

申请日期：2002.12.25

申请公布日期：2004.07.22

申请人：

NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL & TECHNOLOGY

发明人：DANIEL DONI JAYASEELAN;UENO SHUNKICHI;OJI TATSUKI;KANZAKI SHUZO

分类号：B01D39/20;C04B35/10;C04B35/64;C04B38/00;C04B38/06

主分类号：B01D39/20

摘要：<P>PROBLEM TO BE SOLVED: To provide a novel alumina porous body which has a specific surface area of ≥40 m<SP>2</SP>/g and a high strength of ≥200 MPa and shows no decrease in specific surface area, pore size or strength by sintering even when heated for a long time, and its manufacturing method. <P>SOLUTION: In the method for manufacturing the highly heat-resistant/high-strength alumina porous body, a highly pure alumina powder with a diameter of 0.05-0.23 μm is thoroughly mixed with a carbon powder with a diameter of 10-20 nm; alumina particles are sintered through pulse discharge sintering so that fused alumina particles form an alumina porous body wherein individual sintered particles are firmly bonded to each other; and carbon is removed through oxidation, thus giving the objective porous body. A highly heat-resistant porous member containing the alumina porous body as a constituent is provided. <P>COPYRIGHT: (C)2004,JPO&NCIPI