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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.degree. C. and a surface boride layer of that transition metal is formed within a period of about 24 hours on the substrate surface.

Inventors:
 [1];  [2]
  1. Hyogo, JP
  2. Hinsdale, IL
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
864665
Patent Number(s):
US 4398968
Assignee:
Koyama, Koichiro (Hyogo, JP);Shimotake, Hiroshi (Hinsdale, IL)
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; boronizing; transition; metal; surfaces; preparing; boride; layer; substrate; corrosive; environments; harden; surface; machine; applications; particularly; useful; treating; current; collectors; temperature; electrochemical; cell; environment; melt; alkali; tetrafluoride; salt; including; kf; melting; prepared; dissolved; boron; containing; material; instance; nib; mnb; crb; coated; immersed; 700; degree; formed; period; 24; hours; salt including; corrosive environment; metal substrate; boron containing; metal surface; metal surfaces; current collector; alkali metal; electrochemical cell; particularly useful; transition metal; substrate surface; fluoride salt; current collectors; corrosive environments; containing material; cell environment; /148/427/

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. Sat . "Method of boronizing transition metal surfaces". United States. https://www.osti.gov/servlets/purl/864665.
@article{osti_864665,
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.degree. C. and a surface boride layer of that transition metal is formed within a period of about 24 hours on the substrate surface.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

Patent:

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