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Title: Method of coating metal surfaces to form protective metal coating thereon

Abstract

A process is disclosed for forming a protective metal coating on a metal surface using a flux consisting of an alkali metal fluoride, an alkaline earth metal fluoride, an alkali metal fluoaluminate, an alkali metal fluosilicate, and mixtures thereof. The flux, in particulate form, is mixed with particles of a metal coating material which may comprise aluminum, chromium, mixtures thereof, and alloys containing at least 50 wt. % aluminum and the particulate mixture is applied to the metal surface in a single step, followed by heating the coated metal surface to a temperature sufficient to cause the metal coating material to react with the metal surface to form a protective reaction product in the form of a metal coating bonded to the metal surface. The metal surface which reacts with the metal coating material to form the protective coating may comprise Fe, Co, Ni, Ti, V, Cr, Mn, Zr, Nb, Mo, Tc, Hf, Ta, W, Re and alloys thereof. 1 figure.

Inventors:
;
Issue Date:
OSTI Identifier:
7274501
Patent Number(s):
5100486 A
Application Number:
PPN: US 7-563896
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-081521
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Patent File Date: 7 Aug 1990
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; METALS; CHEMICAL COATING; PROTECTIVE COATINGS; ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; ALUMINATES; CHROMIUM; COBALT; FLUORINE COMPOUNDS; HAFNIUM; IRON; MANGANESE; MOLYBDENUM; NICKEL; NIOBIUM; RHENIUM; SILICATES; TANTALUM; TECHNETIUM; TITANIUM; TUNGSTEN; VANADIUM; ZIRCONIUM; ALUMINIUM COMPOUNDS; COATINGS; DEPOSITION; ELEMENTS; HALOGEN COMPOUNDS; OXYGEN COMPOUNDS; SILICON COMPOUNDS; SURFACE COATING; TRANSITION ELEMENTS; 360101* - Metals & Alloys- Preparation & Fabrication

Citation Formats

Krikorian, O.H., and Curtis, P.G. Method of coating metal surfaces to form protective metal coating thereon. United States: N. p., 1992. Web.
Krikorian, O.H., & Curtis, P.G. Method of coating metal surfaces to form protective metal coating thereon. United States.
Krikorian, O.H., and Curtis, P.G. Tue . "Method of coating metal surfaces to form protective metal coating thereon". United States.
@article{osti_7274501,
title = {Method of coating metal surfaces to form protective metal coating thereon},
author = {Krikorian, O.H. and Curtis, P.G.},
abstractNote = {A process is disclosed for forming a protective metal coating on a metal surface using a flux consisting of an alkali metal fluoride, an alkaline earth metal fluoride, an alkali metal fluoaluminate, an alkali metal fluosilicate, and mixtures thereof. The flux, in particulate form, is mixed with particles of a metal coating material which may comprise aluminum, chromium, mixtures thereof, and alloys containing at least 50 wt. % aluminum and the particulate mixture is applied to the metal surface in a single step, followed by heating the coated metal surface to a temperature sufficient to cause the metal coating material to react with the metal surface to form a protective reaction product in the form of a metal coating bonded to the metal surface. The metal surface which reacts with the metal coating material to form the protective coating may comprise Fe, Co, Ni, Ti, V, Cr, Mn, Zr, Nb, Mo, Tc, Hf, Ta, W, Re and alloys thereof. 1 figure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {3}
}