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Title: Abrasion resistant coating and method of making the same

Abstract

An abrasion resistant coating is created by adding a ductile phase to a brittle matrix phase during spray coating where an Al--Cu--Fe quasicrystalline phase (brittle matrix) and an FeAl intermetallic (ductile phase) are combined. This composite coating produces a coating mostly of quasicrystal phase and an inter-splat layer of the FeAl phase to help reduce porosity and cracking within the coating. Coatings are prepared by plasma spraying unblended and blended quasicrystal and intermetallic powders. The blended powders contain 1, 5, 10 and 20 volume percent of the intermetallic powders. The unblended powders are either 100 volume percent quasicrystalline or 100 volume percent intermetallic; these unblended powders were studied for comparison to the others. Sufficient ductile phase should be added to the brittle matrix to transform abrasive wear mode from brittle fracture to plastic deformation, while at the same time the hardness of the composite should not be reduced below that of the original brittle phase material.

Inventors:
 [1];  [2]
  1. (Ames, IA)
  2. (Urbandale, IA)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)
OSTI Identifier:
873770
Patent Number(s):
US 6242108
Application Number:
09/344,694
Assignee:
United States of America as represented by United States Department (Washington, DC) AMES
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
abrasion; resistant; coating; method; created; adding; ductile; phase; brittle; matrix; spray; al-cu-fe; quasicrystalline; feal; intermetallic; combined; composite; produces; quasicrystal; inter-splat; layer; help; reduce; porosity; cracking; coatings; prepared; plasma; spraying; unblended; blended; powders; contain; 10; 20; volume; percent; 100; studied; comparison; sufficient; added; transform; abrasive; wear; mode; fracture; plastic; deformation; time; hardness; reduced; below; original; material; resistant coating; plastic deformation; composite coating; matrix phase; abrasion resistant; plasma spray; volume percent; plasma spraying; crystalline phase; phase material; reduce porosity; metallic powder; brittle matrix; reduced below; spray coating; brittle phase; crystal phase; /428/427/

Citation Formats

Sordelet, Daniel J., and Besser, Matthew F. Abrasion resistant coating and method of making the same. United States: N. p., 2001. Web.
Sordelet, Daniel J., & Besser, Matthew F. Abrasion resistant coating and method of making the same. United States.
Sordelet, Daniel J., and Besser, Matthew F. Tue . "Abrasion resistant coating and method of making the same". United States. https://www.osti.gov/servlets/purl/873770.
@article{osti_873770,
title = {Abrasion resistant coating and method of making the same},
author = {Sordelet, Daniel J. and Besser, Matthew F.},
abstractNote = {An abrasion resistant coating is created by adding a ductile phase to a brittle matrix phase during spray coating where an Al--Cu--Fe quasicrystalline phase (brittle matrix) and an FeAl intermetallic (ductile phase) are combined. This composite coating produces a coating mostly of quasicrystal phase and an inter-splat layer of the FeAl phase to help reduce porosity and cracking within the coating. Coatings are prepared by plasma spraying unblended and blended quasicrystal and intermetallic powders. The blended powders contain 1, 5, 10 and 20 volume percent of the intermetallic powders. The unblended powders are either 100 volume percent quasicrystalline or 100 volume percent intermetallic; these unblended powders were studied for comparison to the others. Sufficient ductile phase should be added to the brittle matrix to transform abrasive wear mode from brittle fracture to plastic deformation, while at the same time the hardness of the composite should not be reduced below that of the original brittle phase material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 05 00:00:00 EDT 2001},
month = {Tue Jun 05 00:00:00 EDT 2001}
}

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