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Title: Boron containing multilayer coatings and method of fabrication

Abstract

Hard coatings are fabricated from multilayer boron/boron carbide, boron carbide/cubic boron nitride, and boron/boron nitride/boron carbide, and the fabrication thereof involves magnetron sputtering in a selected atmosphere. These hard coatings may be applied to tools and engine and other parts, as well to reduce wear on tribological surfaces and electronic devices. These boron coatings contain no morphological growth features. For example, the boron and boron carbide used in forming the multilayers are formed in an inert (e.g. argon) atmosphere, while the cubic boron nitride is formed in a reactive (e.g. nitrogen) atmosphere. The multilayer boron/boron carbide, and boron carbide/cubic boron nitride is produced by depositing alternate layers of boron, cubic boron nitride or boron carbide, with the alternate layers having a thickness of 1 nanometer to 1 micrometer, and at least the interfaces of the layers may be of a discrete or a blended or graded composition. 6 figs.

Inventors:
;
Issue Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
541763
Patent Number(s):
5,670,252
Application Number:
PAN: 8-334,091
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 360601; 360201; PA: EDB-97:141776; SN: 97001865623
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 23 Sep 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FABRICATION; BORON; BORON CARBIDES; BORON NITRIDES; PROTECTIVE COATINGS; USES; LAYERS; COMPOSITE MATERIALS

Citation Formats

Makowiecki, D.M., and Jankowski, A.F. Boron containing multilayer coatings and method of fabrication. United States: N. p., 1997. Web.
Makowiecki, D.M., & Jankowski, A.F. Boron containing multilayer coatings and method of fabrication. United States.
Makowiecki, D.M., and Jankowski, A.F. Tue . "Boron containing multilayer coatings and method of fabrication". United States.
@article{osti_541763,
title = {Boron containing multilayer coatings and method of fabrication},
author = {Makowiecki, D.M. and Jankowski, A.F.},
abstractNote = {Hard coatings are fabricated from multilayer boron/boron carbide, boron carbide/cubic boron nitride, and boron/boron nitride/boron carbide, and the fabrication thereof involves magnetron sputtering in a selected atmosphere. These hard coatings may be applied to tools and engine and other parts, as well to reduce wear on tribological surfaces and electronic devices. These boron coatings contain no morphological growth features. For example, the boron and boron carbide used in forming the multilayers are formed in an inert (e.g. argon) atmosphere, while the cubic boron nitride is formed in a reactive (e.g. nitrogen) atmosphere. The multilayer boron/boron carbide, and boron carbide/cubic boron nitride is produced by depositing alternate layers of boron, cubic boron nitride or boron carbide, with the alternate layers having a thickness of 1 nanometer to 1 micrometer, and at least the interfaces of the layers may be of a discrete or a blended or graded composition. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {9}
}