Novel Net Shape Processing for the Fabrication of Boron-Doped Mo₅Si₃-Based Intermetallic Alloys for High-Temperature Applications--Micropyretics Heaters International, Inc., 613 Redna Terrace, Cincinnati, OH 45215-1108; 513-772-0404
Mr. Srinivas Penumella, Principal Investigator
Dr. Anu Vissa, Business Official
DOE Grant No. DE-FG02-98ER82620
Amount: $750,000

There is a critical need for high-temperature materials (above 1200^oC) that offer low creep and good oxidation resistance. Although a potential intermetallic material, Mo₅Si₃-B, has been identified for such applications, there are no processing techniques available to manufacture parts from this material. This project will investigate the use of micro-pyretic techniques to produce these parts. If the technique is successful, and the superb property values of the alloy reported in the literature can be reproduced, then a major breakthrough is possible. The technique was tried out in Phase 1 and independent laboratory measurements showed that the properties were indeed reproduceable. In addition, during Phase I, a new composition was discovered which opened up the possibility for performance at 2000^oC. In Phase II, compositions made from this material will be fine-tuned, and then parts will be manufactured, analyzed and beta-site tested.

Commercial Applications and Other Benefits as described by the awardee: The use of components made from this material should improve energy efficiency (-10 billion KWHrs/year) and lead to more compact/safe structures. Commercial products should include electrical heating elements, kiln furniture, jet engine components, burner nozzles, and brazing substrates.

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