Functionally graded alumina-based thin film systems
Abstract
The present invention provides coating systems that minimize thermal and residual stresses to create a fatigue- and soldering-resistant coating for aluminum die casting dies. The coating systems include at least three layers. The outer layer is an alumina- or boro-carbide-based outer layer that has superior non-wettability characteristics with molten aluminum coupled with oxidation and wear resistance. A functionally-graded intermediate layer or "interlayer" enhances the erosive wear, toughness, and corrosion resistance of the die. A thin adhesion layer of reactive metal is used between the die substrate and the interlayer to increase adhesion of the coating system to the die surface.
- Inventors:
- Issue Date:
- Research Org.:
- Colorado School of Mines, Golden, CO (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175892
- Patent Number(s):
- 7096921
- Application Number:
- 11/136,613
- Assignee:
- Colorado School of Mines (Golden, CO)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22C - FOUNDRY MOULDING
- DOE Contract Number:
- FC36-00ID13850
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Moore, John J., and Zhong, Dalong. Functionally graded alumina-based thin film systems. United States: N. p., 2006.
Web.
Moore, John J., & Zhong, Dalong. Functionally graded alumina-based thin film systems. United States.
Moore, John J., and Zhong, Dalong. Tue .
"Functionally graded alumina-based thin film systems". United States. https://www.osti.gov/servlets/purl/1175892.
@article{osti_1175892,
title = {Functionally graded alumina-based thin film systems},
author = {Moore, John J. and Zhong, Dalong},
abstractNote = {The present invention provides coating systems that minimize thermal and residual stresses to create a fatigue- and soldering-resistant coating for aluminum die casting dies. The coating systems include at least three layers. The outer layer is an alumina- or boro-carbide-based outer layer that has superior non-wettability characteristics with molten aluminum coupled with oxidation and wear resistance. A functionally-graded intermediate layer or "interlayer" enhances the erosive wear, toughness, and corrosion resistance of the die. A thin adhesion layer of reactive metal is used between the die substrate and the interlayer to increase adhesion of the coating system to the die surface.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {8}
}
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