Brazing for Furnace Components

Materials Resources International (MRi)

Lansdale, PA

WideGap^TM brazing technology is a powder based/braze alloy preform that permits high temperature brazing for joining dissimilar, refractory and/or refractory composite materials

• Developing braze techniques for the fabrication of a furnace for space experimentation. Furnace temperatures of 1000 - 1450^oC have been targeted in which Fe, Mg, and SiO₂ materials will be rapidly heated and vaporized in argon atmospheres
• MRi has proven the feasibility of brazing graphite to molybdenum, graphite to alumina and molybdenum to alumina
• Project is developing several preform methods: paste, tapes, press and sinter, and hot isostatic pressing

• Developed five new materials systems (Cu Ti-Mo, BNi5-Ti-Mo,
• NiCr-Ti-Mo, BNi-5-TI-SiC, & NiCr- Ti-SiC)
• MRi has received two commercial orders, one from Lockheed Martin and the other from EG&G Sealol
• Market potential for such brazing preforms exceeds $25M annually with applications in chemical, power generation, aerospace, and cutting/tooling industries.
• 1998 Sales of $30K, expected 1999 sales $75K

• The project goal is to use MRi’s WideGap^TM brazing technology to fabricate heating elements and crucibles for constructing integral furnaces for Space Shuttle experiments
• Other applications include rocket engine ducts and nozzles

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