| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an alumina conjugate excellent in bonding strength, corrosion resistance and economical efficiency, and suitably applicable as a large ceramic member particularly used in a chemical plant, semiconductor equipment or the like, and a bonding method for alumina sintered bodies for producing such the alumina conjugate. <P>SOLUTION: The alumina conjugate is an alumina conjugate 1B in which alumina sintered bodies 1a, 1b are bonded together via bonding portions 3. The bonding portions 3 are formed of alumina having a thickness of ≥30 μm, and are formed of: coarse independent pores 20c that have a pore diameter the length of which is 40-100% of the thickness of the bonding portion 3 in the thickness direction of the bonding portion 3; unsintered regions 20a which include micropores having a pore diameter of ≤5 μm; and dense sintered regions 20b having a relative density of ≥98%. <P>COPYRIGHT: (C)2012,JPO&INPIT |
