| 摘要 |
PURPOSE:To obtain the titled sintered material having high density and thermal conductivity, by adding an alkaline-earth metal compound and a rare earth compound to AlN, forming a molded article or sintered article from the above mixture and calcining the article in a reducing atmosphere containing N2. CONSTITUTION:AlN is added with 0.05-25wt.% of at least one kind of alkaline earth metal compound selected from Ca, Sr and Ba, 0.05-25wt.% of at least one kind of rare earth compound selected from Y, Sc, Dy and Ce and a binder. The mixture is kneaded, granulated, graded and molded. The molded article is optionally heated in a non-oxidizing atmosphere to remove the binder and is calcined at 1,550-2,050 deg.C for <=4hr in at least one kind of atmosphere selected from N2 and H2, CO, carbon gas and solid carbon to obtain a sintered product containing a constituent phase other than AlN. The molded article or sintered article is calcined in a carbon vessel lined with an AlN plate, BN plate or W plate at 1,550-2,050 deg.C for >=4hr in an atmosphere containing N2 gas.
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