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Boron modified molybdenum silicide and products

Patent ·
OSTI ID:872124
 [1];  [2]
  1. Idaho Falls, ID
  2. Ames, IA
+ Show Author Affiliations

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.

Research Organization:
Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)
DOE Contract Number:
W-7405-ENG-82
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Number(s):
US 5865909
Application Number:
08/699,647
OSTI ID:
872124
Country of Publication:
United States
Language:
English

References (4)

A New Carbide-Base Cermet Containing Tic, TiB2, and CoSi journal May 1954
Compressive creep behavior of Mo5Si3 with the addition of boron journal January 1996
Untersuchungen in den Dreistoffsystemen: Molybdän-Silizium-Bor, Wolfram-Silizium-Bor und in dem System: VSi2−TaSi2 journal March 1957
Oxidation Resistances of Ternary Mixtures of the Carbides of Titanium, Silicon, and Boron journal April 1954

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Related Subjects

/148/420/
10
20
80
90
air
associated
atmospheres
boron
boron modified
boron-modified
component
components
composition
composition comprising
comprising
creep
creep resistance
dissipation
distances
due
effective
electrical
electrical component
electrical components
electrical power
electrical resistance
elements
elements due
exhibit
fabricated
heating
heating element
heating elements
impart
improved
improved creep
including
integrity
interconnects
material
microstructural
microstructure
modified
modified molybdenum
molybdenum
molybdenum silicide
mosi
multiphase
oxidation
oxidation resistance
oxygen-bearing
phase
power
power dissipation
products
resistance
resistance heat
resistance heating
resistors
result
retaining
service
silicide
silicide material
span
structural
structural component
structural integrity
structure including
temperature
temperature creep
temperature structural
temperatures
weight
withstand