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Title: SOLID STATE DIFFUSION BONDING OF REFRACTORY METALS AND ALLOYS

Abstract

Solid-state diffusion bonding of refractory metals by heating in vacuum was developed for self-bonding Cb to Cb, Mo to Mo, and bi-metal bonding Mo to Ta, etc. Other metals and alloys such as W, Re, Mo, Ta, Cb, V, W--26 Re, Mo-- 50 Re, and Ta-- 10 W have also been diffusion bonded. True metallurgical bonds are achieved at the contacting metal interfaces with only sufficient pressure to assure positioning and contact of the areas to be bonded. Grain boundary migration appears to be a major mechanism in forming the bonds. Stress-rupture tests at 4000 deg F on Mo and 4700 deg F on Ta-- 10 W alloy were conducted up to 10 hours in hydrogen atmosphere to permit comparison of diffusion-bonded joint rupture strength with basic thin sheet properties. (auth)

Authors:
Publication Date:
Research Org.:
General Electric Co. Advanced Technology Services, Cincinnati
OSTI Identifier:
4634983
Report Number(s):
CONF-53-8; TM-62-9-8
NSA Number:
NSA-17-036243
DOE Contract Number:  
AT(40-1)-2847
Resource Type:
Technical Report
Resource Relation:
Other Information: From 1962 World Metal Show, New York, Oct.-Nov. 1962. Orig. Receipt Date: 31-DEC-63
Country of Publication:
United States
Language:
English
Subject:
METALS, CERAMICS, AND OTHER MATERIALS; BONDING; DIFFUSION; FAILURES; GRAIN BOUNDARIES; HEATING; HIGH TEMPERATURE; HYDROGEN; MATERIALS TESTING; MOLYBDENUM; MOLYBDENUM ALLOYS; NIOBIUM; PRESSURE; REFRACTORIES; RHENIUM; RHENIUM ALLOYS; SHEETS; SOLIDS; STRESSES; SURFACES; TANTALUM ALLOYS; THICKNESS; TUNGSTEN; TUNGSTEN ALLOYS; VACUUM; VANADIUM

Citation Formats

Tarr, C.O. SOLID STATE DIFFUSION BONDING OF REFRACTORY METALS AND ALLOYS. United States: N. p., 1962. Web. doi:10.2172/4634983.
Tarr, C.O. SOLID STATE DIFFUSION BONDING OF REFRACTORY METALS AND ALLOYS. United States. doi:10.2172/4634983.
Tarr, C.O. Wed . "SOLID STATE DIFFUSION BONDING OF REFRACTORY METALS AND ALLOYS". United States. doi:10.2172/4634983. https://www.osti.gov/servlets/purl/4634983.
@article{osti_4634983,
title = {SOLID STATE DIFFUSION BONDING OF REFRACTORY METALS AND ALLOYS},
author = {Tarr, C.O.},
abstractNote = {Solid-state diffusion bonding of refractory metals by heating in vacuum was developed for self-bonding Cb to Cb, Mo to Mo, and bi-metal bonding Mo to Ta, etc. Other metals and alloys such as W, Re, Mo, Ta, Cb, V, W--26 Re, Mo-- 50 Re, and Ta-- 10 W have also been diffusion bonded. True metallurgical bonds are achieved at the contacting metal interfaces with only sufficient pressure to assure positioning and contact of the areas to be bonded. Grain boundary migration appears to be a major mechanism in forming the bonds. Stress-rupture tests at 4000 deg F on Mo and 4700 deg F on Ta-- 10 W alloy were conducted up to 10 hours in hydrogen atmosphere to permit comparison of diffusion-bonded joint rupture strength with basic thin sheet properties. (auth)},
doi = {10.2172/4634983},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1962},
month = {8}
}