Russell B Gallagher

US Patent:

55930859, Jan 14, 1997

Filed:

Mar 22, 1995

Appl. No.:

8/408434

Inventors:

Henry J. Tohill - Chula Vista CA
Russell B. Gallagher - Painesville OH
Kenneth G. Kubarych - Delmar CA
Nils O. Hallstrom - San Diego CA

Assignee:

Solar Turbines Incorporated - San Diego CA

International Classification:

B23K 2000
B23P 1504

US Classification:

228193

Abstract:

A method for determining the generation of a diffusion bond between two articles is disclosed. The two articles are sealed together to define a cavity therebetween. A vacuum is drawn in the cavity by means of an evacuation tube having a passageway. The passageway is then sealed and the articles are subjected to a temperature and pressure to diffusion bond the articles together. A successful diffusion bond can be determined if the evacuation tube sidewall is collapsed.