Coating formulation and method for refinishing the surface of surface-damaged graphite articles
Abstract
The described development is directed to a coating formulation for filling surface irregularities in graphite articles such as molds, crucibles, and matched die sets used in high-temperature metallurgical operations. The coating formulation of the present invention is formed of carbon black flour, thermosetting resin and a solvent for the resin. In affixing the coating to the article, the solvent is evaporated, the resin cured to bond the coating to the surface of the article and then pyrolyzed to convert the resin to carbon. Upon completion of the pyrolysis step, the coating is shaped and polished to provide the article with a surface restoration that is essentially similar to the original or desired surface finish without the irregularity.
- Inventors:
-
- Lenoir City, TN
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 866785
- Patent Number(s):
- 4786524
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22C - FOUNDRY MOULDING
B - PERFORMING OPERATIONS B22 - CASTING B22D - CASTING OF METALS
- DOE Contract Number:
- W-7405-ENG-26
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- coating; formulation; method; refinishing; surface; surface-damaged; graphite; articles; described; directed; filling; irregularities; molds; crucibles; matched; die; sets; high-temperature; metallurgical; operations; formed; carbon; black; flour; thermosetting; resin; solvent; affixing; article; evaporated; cured; bond; pyrolyzed; convert; completion; pyrolysis; step; shaped; polished; provide; restoration; essentially; similar; original; desired; finish; irregularity; surface finish; thermosetting resin; carbon black; pyrolysis step; coating formulation; graphite articles; desired surface; metallurgical operations; filling surface; temperature metal; /427/524/
Citation Formats
Ardary, Zane L, and Benton, Samuel T. Coating formulation and method for refinishing the surface of surface-damaged graphite articles. United States: N. p., 1988.
Web.
Ardary, Zane L, & Benton, Samuel T. Coating formulation and method for refinishing the surface of surface-damaged graphite articles. United States.
Ardary, Zane L, and Benton, Samuel T. Fri .
"Coating formulation and method for refinishing the surface of surface-damaged graphite articles". United States. https://www.osti.gov/servlets/purl/866785.
@article{osti_866785,
title = {Coating formulation and method for refinishing the surface of surface-damaged graphite articles},
author = {Ardary, Zane L and Benton, Samuel T},
abstractNote = {The described development is directed to a coating formulation for filling surface irregularities in graphite articles such as molds, crucibles, and matched die sets used in high-temperature metallurgical operations. The coating formulation of the present invention is formed of carbon black flour, thermosetting resin and a solvent for the resin. In affixing the coating to the article, the solvent is evaporated, the resin cured to bond the coating to the surface of the article and then pyrolyzed to convert the resin to carbon. Upon completion of the pyrolysis step, the coating is shaped and polished to provide the article with a surface restoration that is essentially similar to the original or desired surface finish without the irregularity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}
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