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

Title: Al/sub 2/O/sub 3/ adherence on CoCrAl alloys

Abstract

Adherence of protective oxides on NiCrAl and CoCrAl superalloys has been promoted by a dispersion of a highly oxygen reactive element or its oxide being produced within the protection system. Two aspects of this subject are investigated here: the use of Al/sub 2/O/sub 3/ as both the dispersion and protective oxide; and the production of an HfO/sub 2/ dispersion while simultaneously aluminizing the alloy. It was found that an Al/sub 2/O/sub 3/ dispersion will act to promote the adherence of an external scale of Al/sub 2/O/sub 3/ to a degree comparable to previously tested dispersions and an HfO/sub 2/ dispersion comparable to that produced by a Rhines pack treatment is produced during aluminization.

Authors:
Publication Date:
Research Org.:
California Univ., Berkeley (USA). Lawrence Berkeley Lab.
OSTI Identifier:
5188197
Report Number(s):
LBL-10952
TRN: 80-015357
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: Thesis
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM OXIDES; SURFACE COATING; HAFNIUM OXIDES; ALUMINIUM ALLOYS; OXIDATION; SURFACE PROPERTIES; CHROMIUM ALLOYS; COBALT BASE ALLOYS; NICKEL BASE ALLOYS; ADHESION; CREEP; FATIGUE; GAS TURBINES; PROTECTIVE COATINGS; ALLOYS; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; COATINGS; COBALT ALLOYS; DEPOSITION; HAFNIUM COMPOUNDS; MACHINERY; MECHANICAL PROPERTIES; NICKEL ALLOYS; OXIDES; OXYGEN COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TURBINES; TURBOMACHINERY; 360104* - Metals & Alloys- Physical Properties; 360105 - Metals & Alloys- Corrosion & Erosion

Citation Formats

Kingsley, L.M. Al/sub 2/O/sub 3/ adherence on CoCrAl alloys. United States: N. p., 1980. Web. doi:10.2172/5188197.
Kingsley, L.M. Al/sub 2/O/sub 3/ adherence on CoCrAl alloys. United States. doi:10.2172/5188197.
Kingsley, L.M. Tue . "Al/sub 2/O/sub 3/ adherence on CoCrAl alloys". United States. doi:10.2172/5188197. https://www.osti.gov/servlets/purl/5188197.
@article{osti_5188197,
title = {Al/sub 2/O/sub 3/ adherence on CoCrAl alloys},
author = {Kingsley, L.M.},
abstractNote = {Adherence of protective oxides on NiCrAl and CoCrAl superalloys has been promoted by a dispersion of a highly oxygen reactive element or its oxide being produced within the protection system. Two aspects of this subject are investigated here: the use of Al/sub 2/O/sub 3/ as both the dispersion and protective oxide; and the production of an HfO/sub 2/ dispersion while simultaneously aluminizing the alloy. It was found that an Al/sub 2/O/sub 3/ dispersion will act to promote the adherence of an external scale of Al/sub 2/O/sub 3/ to a degree comparable to previously tested dispersions and an HfO/sub 2/ dispersion comparable to that produced by a Rhines pack treatment is produced during aluminization.},
doi = {10.2172/5188197},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 01 00:00:00 EST 1980},
month = {Tue Apr 01 00:00:00 EST 1980}
}

Technical Report:

Save / Share: