| 摘要 |
PURPOSE:To improve appearance and physical properties by making an absorbent containing a readily reducing substance in the vicinity of interstices present in a hermetically closed type container therein so as not to come into contact with an AlN sintered compact and baking. CONSTITUTION:This method for producing an aluminum nitride sintered compact good in appearance is to add a sintering assistant such as Y2O3 and an organic binder to AlN, knead the resultant mixture, subsequently form the kneaded mixture, provide a green sheet compact, thermally degrease the compact, then house an AlN compact to be sintered such as a degreased compact into an integral type hermetically closed container of a structure for placing an inserting lid of the same quality in a container body comprising an AlN sintered compact without containing a sintering assistant, produce gaps by the deformation of a superposed part or crystal grain growth, etc., of AlN with increasing frequency of use, thereby disable the maintenance of adhesivity in the superposed part of the lid on the container body, then arrange an absorbent such as the AlN sintered compact containing a readily reducing substance such as Y203 of a prescribed shape near the gaps to be present in the hermetically closed container so as not to come into contact with the AlN compact to be sintered, place the hermetically closed container in a carbon furnace and thermally bake the AlN compact to be sintered in an atmosphere of N2 with a carbon heater. |
