SBIR Phase I: Laser Crystallization of Amorphous Sputter-Deposited Quasicrystalline Coatings on Conventional Engineering Substrates

Period of Performance: 01/01/2003 - 12/31/2003

$100K

Phase 1 SBIR

Recipient Firm

Engineered Coatings, Inc.
P.O. Box 4782
Grand Junction, CO 81503
Principal Investigator

Abstract

This Small Business Innovative Research (SBIR) Phase I project will develop a laser treatment to crystallize amorphous quasicrystalline (QC) coatings on thermally sensitive engineering substrates. Application of these materials has been limited by the high temperature-annealing requirement, which restricts their deposition of super alloys and ceramic materials only. In the program, it is proposed to develop laser treatment of amorphous sputter-deposited QC coatings to provide localized thermal energy to the coated region only. This will enable the amorphous-to-crystalline conversion, while not degrading the load-carrying capability of the underlying substrate materials (Aluminum, Titanium, and bearing steel allows). The spectral reflectance of a-QC sputtered coatings will be measured to select the appropriate laser (and wavelength) for processing, laser glazing trials will be conducted, and then the microstructure and mechanical/tribological properties of the crystallized QC films will be characterized. Results will be briefed to major diesel engine manufacturers.