Process by compacting a porous structural member for hot isostat

Details Process by compacting a porous structural member for hot isostat Process by compacting a porous structural member for hot isostat

1987-02-05

1989-03-14

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 56, 264 62, 264332, C04B 3564

Patent

active

048122726

ABSTRACT:
A process for compacting a porous ceramic structural member having a compated shape and an optional size by encapsulation with material of the same type and capable of sintering and subsequently subjected to hot-isostatic pressing; immersing the preformed body in a suspension of a material of the same type in a solvent but which contains no sintering aid and forming a first encapsulating layer; evaporating the solvent; immersing the thus obtained body in a second suspension of a material in a solvent of the same type capable of sintering and which contains one or more sintering aids, and forming a second encapsulating layer; evaporating the solvent; subjecting the thus obtained body at an elevated temperature in an atmosphere of a protective gas for a sufficient period of time to sinter the same; isostatically compacting the body provided with a tight-sintered surface; and mechanically removing the encapsulating layers.

REFERENCES:
patent: 4112143 (1978-09-01), Alderborn et al.
patent: 4264546 (1981-04-01), Becker
patent: 4310477 (1982-01-01), Uy et al.
patent: 4356136 (1982-10-01), Mangels
patent: 4381931 (1983-05-01), Hunold et al.

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