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:
-
- Hyogo, JP
- Hinsdale, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 864665
- Patent Number(s):
- 4398968
- Assignee:
- Koyama, Koichiro (Hyogo, JP);Shimotake, Hiroshi (Hinsdale, IL)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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 = {Sat Jan 01 00:00:00 EST 1983},
month = {Sat Jan 01 00:00:00 EST 1983}
}