skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Iron aluminide useful as electrical resistance heating elements

Abstract

The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, {<=}1% Cr and either {>=}0.05% Zr or ZrO{sub 2} stringers extending perpendicular to an exposed surface of the heating element or {>=}0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, {<=}2% Ti, {<=}2% Mo, {<=}1% Zr, {<=}1% C, {<=}0.1% B, {<=}30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, {<=}1% rare earth metal, {<=}1% oxygen, {<=}3% Cu, balance Fe. 64 figs.

Inventors:
; ; ; ;
Publication Date:
Research Org.:
Lockheed Martin Energy Syst Inc
OSTI Identifier:
462858
Patent Number(s):
US 5,620,651/A/
Application Number:
PAN: 8-426,006
Assignee:
Philip Morris Inc., New York, NY (United States) PTO; SCA: 360100; 320106; PA: EDB-97:061696; SN: 97001767250
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 15 Apr 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; IRON BASE ALLOYS; ALUMINIUM ALLOYS; ELECTRIC APPLIANCES; ELECTRIC CONDUCTIVITY; MICROSTRUCTURE; CHEMICAL COMPOSITION; CORROSION RESISTANCE; MECHANICAL PROPERTIES

Citation Formats

Sikka, V.K., Deevi, S.C., Fleischhauer, G.S., Hajaligol, M.R., and Lilly, A.C. Jr. Iron aluminide useful as electrical resistance heating elements. United States: N. p., 1997. Web.
Sikka, V.K., Deevi, S.C., Fleischhauer, G.S., Hajaligol, M.R., & Lilly, A.C. Jr. Iron aluminide useful as electrical resistance heating elements. United States.
Sikka, V.K., Deevi, S.C., Fleischhauer, G.S., Hajaligol, M.R., and Lilly, A.C. Jr. Tue . "Iron aluminide useful as electrical resistance heating elements". United States.
@article{osti_462858,
title = {Iron aluminide useful as electrical resistance heating elements},
author = {Sikka, V.K. and Deevi, S.C. and Fleischhauer, G.S. and Hajaligol, M.R. and Lilly, A.C. Jr.},
abstractNote = {The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, {<=}1% Cr and either {>=}0.05% Zr or ZrO{sub 2} stringers extending perpendicular to an exposed surface of the heating element or {>=}0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, {<=}2% Ti, {<=}2% Mo, {<=}1% Zr, {<=}1% C, {<=}0.1% B, {<=}30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, {<=}1% rare earth metal, {<=}1% oxygen, {<=}3% Cu, balance Fe. 64 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {4}
}