Encapsulation method for hot isostatic pressing

Details Encapsulation method for hot isostatic pressing Encapsulation method for hot isostatic pressing

1989-07-20

1990-10-02

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

264 62, 264332, C04B 3564

Patent

active

049605500

ABSTRACT:
The encapsulation of ceramic preforms (10) for HIP processing is considerably simplified, and the use of standard laboratory glassware as encapsulation material is made possible, by placing non-sealed glass capsule parts (12, 14) around the preform (10) in the HIP pressure vessel (18), evacuating the vessel (18), heating the vessel (18) to a temperature at which the glass parts (12, 14) fuse together but do not collapse, and then pressurizing the vessel (18) and increasing the temperature therein as required for conventional HIP processing.

REFERENCES:
patent: 4081272 (1978-03-01), Adlerborn
patent: 4455275 (1984-06-01), Alderborn et al.
patent: 4462816 (1984-07-01), Wolfe et al.
patent: 4495123 (1985-01-01), Hunold
patent: 4722825 (1988-02-01), Goldstein

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