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Title: 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 Univ., Ames, IA (United States)
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
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

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Related Subjects

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/