公开(公告)号：US4927600A

公开(公告)日：1990-05-22

申请号：US105985

申请日：1987-10-08

申请人： Tsuneo Miyashita ,  Hiroaki Nishio ,  Kazuya Yabuta ,  Yoshio Takagi

发明人： Tsuneo Miyashita ,  Hiroaki Nishio ,  Kazuya Yabuta ,  Yoshio Takagi

IPC分类号： B30B11/00 ,  B22F3/04 ,  B22F3/12 ,  B28B7/34 ,  B30B5/02

CPC分类号： B22F3/1233 ,  B22F3/04 ,  B28B7/342 ,  Y10S264/78

摘要： The invention is concerned with the method of compression molding a metallic or ceramic powders. The method includes the step of maintaining a negative pressure within a first mold of noncompactable powders for intimately contacting on its inner surface a pouch-like member of thin-walled resilient material for producing a second mold, and the step of compactly charging starting powders into the second mold and exhausting air from and sealing the second mold, taking out a pre-molded body of the metallis or ceramic powders together with the second mold and the step of processing the pre-molded body by a cold or hot isostatic press.

摘要翻译： 本发明涉及压缩成型金属或陶瓷粉末的方法。 该方法包括在不可压缩的粉末的第一模具内保持负压以在其内表面上紧密接触薄壁弹性材料的袋状构件以产生第二模具的步骤，以及将起始粉末紧密地装入 第二模具和排出空气来自第二模具并且密封第二模具，与第二模具一起取出金属或陶瓷粉末的预成型体，以及通过冷或热等静压机加工预成型体的步骤。

公开(公告)号：US4935389A

公开(公告)日：1990-06-19

申请号：US357139

申请日：1989-05-26

申请人： Seiki Umebayashi ,  Kazushi Kishi ,  Kazuya Yabuta ,  Hiroaki Nishio

发明人： Seiki Umebayashi ,  Kazushi Kishi ,  Kazuya Yabuta ,  Hiroaki Nishio

IPC分类号： C04B35/599 ,  C04B35/597

CPC分类号： C04B35/597

摘要： A ceramic material comprising a double phase complex sialon sintered body of .beta.'-type sialon and O'-type sialon being composed of the four elements of Si,Al,O and N and having a ratio of .beta.'-type sailon/O'-type sialon of 7/1 to 3/5 by weight ratio.The .beta.'-phase-O'-phase complex sailon has a dense structure and is excellent in high strength and high oxidation-resistance.