公开(公告)号：CA1057485A

公开(公告)日：1979-07-03

申请号：CA267222

申请日：1976-12-06

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LOERSCH JOSEPH F ,  HURWITZ PETER A ,  JORDAN LESTER W

IPC: F01D5/28 ,  B22F3/12 ,  B22F3/14 ,  B22F3/15 ,  B30B11/00 ,  B22F7/04

Abstract: This invention involves a method of making a gasimpervious container for the hot isostatic compaction of particulate material into an article of intricate configuration. It comprises providing a removable pattern in the appropriate precompaction configuration of the article to be produced, forming a shell of vitreous frit on the pattern, heating the shell to effect vitrification thereof, and coating the vitreous shell with a layer of metallic material to form a gas-impervious metallic shell around the vitreous shell. The pattern may be removed at any time after formation of the shell of vitreous frit. The gas-impervious container thus produced is well-suited for use in hot isostatic compaction processes wherein dense articles of complex shape, such as gas turbine engine components, are produced from superalloy powders.