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Title: Method of boronizing transition metal surfaces

Abstract

A method is presented for preparing a boride layer on a transition metal substrate for use in corrosive environments or as a harden surface in machine applications. This method is particularly useful in treating current collectors for use within a high temperature and corrosive electrochemical cell environment. A melt of a alkali metal boride tetrafluoride salt including such as KF to lower its melting point is prepared including a dissolved boron containing material, for instance NiB, MnB[sub 2], or CrB[sub 2]. A transition metal to be coated is immersed in the melt at a temperature of no more than 700 C and a surface boride layer of that transition metal is formed within a period of about 24 hours on the substrate surface. 4 figs.

Inventors:
;
Issue Date:
OSTI Identifier:
7149761
Patent Number(s):
4398968 A
Application Number:
PPN: US 6-297310
Assignee:
PTO; EDB-94-124272
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 28 Aug 1981
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BORIDES; DIP COATING; TRANSITION ELEMENTS; CORROSION PROTECTION; PROTECTIVE COATINGS; CHROMIUM BORIDES; ELECTROCHEMICAL CELLS; MANGANESE BORIDES; NICKEL BORIDES; POTASSIUM FLUORIDES; ALKALI METAL COMPOUNDS; BORON COMPOUNDS; CHROMIUM COMPOUNDS; COATINGS; DEPOSITION; ELEMENTS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; MANGANESE COMPOUNDS; METALS; NICKEL COMPOUNDS; POTASSIUM COMPOUNDS; SURFACE COATING; TRANSITION ELEMENT COMPOUNDS; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication; 360105 - Metals & Alloys- Corrosion & Erosion

Citation Formats

Koyama, Koichiro, and Shimotake, Hiroshi. Method of boronizing transition metal surfaces. United States: N. p., 1983. Web.
Koyama, Koichiro, & Shimotake, Hiroshi. Method of boronizing transition metal surfaces. United States.
Koyama, Koichiro, and Shimotake, Hiroshi. Tue . "Method of boronizing transition metal surfaces". United States.
@article{osti_7149761,
title = {Method of boronizing transition metal surfaces},
author = {Koyama, Koichiro and Shimotake, Hiroshi},
abstractNote = {A method is presented for preparing a boride layer on a transition metal substrate for use in corrosive environments or as a harden surface in machine applications. This method is particularly useful in treating current collectors for use within a high temperature and corrosive electrochemical cell environment. A melt of a alkali metal boride tetrafluoride salt including such as KF to lower its melting point is prepared including a dissolved boron containing material, for instance NiB, MnB[sub 2], or CrB[sub 2]. A transition metal to be coated is immersed in the melt at a temperature of no more than 700 C and a surface boride layer of that transition metal is formed within a period of about 24 hours on the substrate surface. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {8}
}