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Title: Boron modified molybdenum silicide and products

Abstract

A boron-modified molybdenum silicide material having the composition comprising about 80 to about 90 weight % Mo, about 10 to about 20 weight % Si, and about 0.1 to about 2 weight % B and a multiphase microstructure including Mo.sub.5 Si.sub.3 phase as at least one microstructural component effective to impart good high temperature creep resistance. The boron-modified molybdenum silicide material is fabricated into such products as electrical components, such as resistors and interconnects, that exhibit oxidation resistance to withstand high temperatures in service in air as a result of electrical power dissipation, electrical resistance heating elements that can withstand high temperatures in service in air and other oxygen-bearing atmospheres and can span greater distances than MoSi.sub.2 heating elements due to improved creep resistance, and high temperature structural members and other fabricated components that can withstand high temperatures in service in air or other oxygen-bearing atmospheres while retaining creep resistance associated with Mo.sub.5 Si.sub.3 for structural integrity.

Inventors:
 [1];  [2]
  1. Idaho Falls, ID
  2. Ames, IA
Issue Date:
Research Org.:
Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
OSTI Identifier:
872124
Patent Number(s):
5865909
Application Number:
08/699,647
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
boron; modified; molybdenum; silicide; products; boron-modified; material; composition; comprising; 80; 90; weight; 10; 20; multiphase; microstructure; including; phase; microstructural; component; effective; impart; temperature; creep; resistance; fabricated; electrical; components; resistors; interconnects; exhibit; oxidation; withstand; temperatures; service; air; result; power; dissipation; heating; elements; oxygen-bearing; atmospheres; span; distances; mosi; due; improved; structural; retaining; associated; integrity; power dissipation; silicide material; creep resistance; heating elements; resistance heating; structure including; electrical components; oxidation resistance; heating element; composition comprising; electrical power; electrical resistance; structural integrity; molybdenum silicide; temperature structural; boron modified; elements due; temperature creep; improved creep; modified molybdenum; resistance heat; structural component; electrical component; /148/420/

Citation Formats

Meyer, Mitchell K, and Akinc, Mufit. Boron modified molybdenum silicide and products. United States: N. p., 1999. Web.
Meyer, Mitchell K, & Akinc, Mufit. Boron modified molybdenum silicide and products. United States.
Meyer, Mitchell K, and Akinc, Mufit. Fri . "Boron modified molybdenum silicide and products". United States. https://www.osti.gov/servlets/purl/872124.
@article{osti_872124,
title = {Boron modified molybdenum silicide and products},
author = {Meyer, Mitchell K and Akinc, Mufit},
abstractNote = {A boron-modified molybdenum silicide material having the composition comprising about 80 to about 90 weight % Mo, about 10 to about 20 weight % Si, and about 0.1 to about 2 weight % B and a multiphase microstructure including Mo.sub.5 Si.sub.3 phase as at least one microstructural component effective to impart good high temperature creep resistance. The boron-modified molybdenum silicide material is fabricated into such products as electrical components, such as resistors and interconnects, that exhibit oxidation resistance to withstand high temperatures in service in air as a result of electrical power dissipation, electrical resistance heating elements that can withstand high temperatures in service in air and other oxygen-bearing atmospheres and can span greater distances than MoSi.sub.2 heating elements due to improved creep resistance, and high temperature structural members and other fabricated components that can withstand high temperatures in service in air or other oxygen-bearing atmospheres while retaining creep resistance associated with Mo.sub.5 Si.sub.3 for structural integrity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

A New Carbide-Base Cermet Containing Tic, TiB2, and CoSi
journal, May 1954


Oxidation Resistances of Ternary Mixtures of the Carbides of Titanium, Silicon, and Boron
journal, April 1954


Untersuchungen in den Dreistoffsystemen: Molybdän-Silizium-Bor, Wolfram-Silizium-Bor und in dem System: VSi2−TaSi2
journal, March 1957


Compressive creep behavior of Mo5Si3 with the addition of boron
journal, January 1996