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Title: THE DEVELOPMENT OF TESTING PROCEDURES AND THE EVALUATION OF COATINGS FOR TANTALUM, GRAPHITE, NICKEL, AND COPPER. Period covered October 15, 1955 to January 15, 1957

Abstract

The results of a program to evaluate the resistance of a number of coatings for Cu, Ni, Ta, and graphite to erosion, oxidation, and thermal shock under high temperature service conditions are summarized. Specimens were tested in the throat of a hydrogen-oxygen rocket motor which could produce a maximum heat flux of approximately 3000 Btu/sec sq ft, and a maximum temperature of approximately 5500 deg F. The results indicate that several coatings have properties of promise. These coatings include Rokide A, Cr, and Cr-Ni coatings for Cu; Rokide A and Cr coatings for Ni; and a Rokide C coating for graphite. In general, flame sprayed and electrodeposited types of coatings appeared to be the most successful. None of the coatings for Ta that were tested were successful. The failure of coatings on Ta appears to be the result of oxidation of the Ta through the coatings; a successful Ta coating, if developed, should have a low porosity. Tests of coatings applied by vapor deposition indicated that these coatings have relatively poor adhesion and are subject to erosion. (auth)

Authors:
; ; ; ;
Publication Date:
Research Org.:
Battelle Memorial Inst., Columbus, Ohio
OSTI Identifier:
4330506
Report Number(s):
WADC-TR-57-317; AD-131070
NSA Number:
NSA-12-001404
DOE Contract Number:  
AF33(616)-3227
Resource Type:
Technical Report
Resource Relation:
Other Information: Project title: THE DEVELOPMENT OF TESTING PROCEDURES AND THE EVALUATION OF COATINGS FOR TANTALUM, GRAPHITE, NICKEL, AND COPPER. Task title: PHYSICAL MECHANICAL AND THERMAL PROPERTIES OF ATLAS MATERIALS. Orig. Receipt Date: 31-DEC-58
Country of Publication:
United States
Language:
English
Subject:
MINERALOGY, METALLURGY, AND CERAMICS; ADHESION; CHROMIUM; CHROMIUM ALLOYS; COATING; COPPER; CORROSION; ELECTRODEPOSITION; GRAPHITE; HIGH TEMPERATURE; LABORATORY EQUIPMENT; MATERIALS TESTING; NICKEL; NICKEL ALLOYS; OXIDATION; POROSITY; QUANTITATIVE ANALYSIS; SPUTTERING; STABILITY; TANTALUM; TESTING; THERMAL STRESSES; VAPORS

Citation Formats

Spraker, W.A., Weller, A.E., Hess, R.E., Harp, J.L., and Bagby, F.L.. THE DEVELOPMENT OF TESTING PROCEDURES AND THE EVALUATION OF COATINGS FOR TANTALUM, GRAPHITE, NICKEL, AND COPPER. Period covered October 15, 1955 to January 15, 1957. United States: N. p., 1957. Web.
Spraker, W.A., Weller, A.E., Hess, R.E., Harp, J.L., & Bagby, F.L.. THE DEVELOPMENT OF TESTING PROCEDURES AND THE EVALUATION OF COATINGS FOR TANTALUM, GRAPHITE, NICKEL, AND COPPER. Period covered October 15, 1955 to January 15, 1957. United States.
Spraker, W.A., Weller, A.E., Hess, R.E., Harp, J.L., and Bagby, F.L.. Wed . "THE DEVELOPMENT OF TESTING PROCEDURES AND THE EVALUATION OF COATINGS FOR TANTALUM, GRAPHITE, NICKEL, AND COPPER. Period covered October 15, 1955 to January 15, 1957". United States. doi:.
@article{osti_4330506,
title = {THE DEVELOPMENT OF TESTING PROCEDURES AND THE EVALUATION OF COATINGS FOR TANTALUM, GRAPHITE, NICKEL, AND COPPER. Period covered October 15, 1955 to January 15, 1957},
author = {Spraker, W.A. and Weller, A.E. and Hess, R.E. and Harp, J.L. and Bagby, F.L.},
abstractNote = {The results of a program to evaluate the resistance of a number of coatings for Cu, Ni, Ta, and graphite to erosion, oxidation, and thermal shock under high temperature service conditions are summarized. Specimens were tested in the throat of a hydrogen-oxygen rocket motor which could produce a maximum heat flux of approximately 3000 Btu/sec sq ft, and a maximum temperature of approximately 5500 deg F. The results indicate that several coatings have properties of promise. These coatings include Rokide A, Cr, and Cr-Ni coatings for Cu; Rokide A and Cr coatings for Ni; and a Rokide C coating for graphite. In general, flame sprayed and electrodeposited types of coatings appeared to be the most successful. None of the coatings for Ta that were tested were successful. The failure of coatings on Ta appears to be the result of oxidation of the Ta through the coatings; a successful Ta coating, if developed, should have a low porosity. Tests of coatings applied by vapor deposition indicated that these coatings have relatively poor adhesion and are subject to erosion. (auth)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jul 10 00:00:00 EDT 1957},
month = {Wed Jul 10 00:00:00 EDT 1957}
}

Technical Report:
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