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Rogerio Lima
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Email: rogerio.lima@imi.cnrc-nrc.gc.ca
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Ceramic-Based Thermal Spray Coatings from Nanostructured Feedstock Powders
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The Surface Technologies Group of NRC's Industrial Materials Institute is performing research on nanomaterials by thermal spraying nanostructured feedstock powders
Overview
Nanostructured thermal spray coatings have been developed for a range of applications:
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Anti-wear: TiO2 and WC-Co
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Biomedical: Hydroxyapatite (HA)
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Aerospace: ZrO2-Y2O3
Research Program
Objectives
To produce higher performance coatings engineered to enhance specific characteristics:
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Higher resistance to multiple types of wear: abrasion, slurry erosion at 30o and slurry erosion at 90o
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Increased bond strength
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Improved biocompatibility
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Enhanced thermal shock resistance and lower thermal conductivity
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Better surface finish and machinability
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Improved consistency and reproducibility
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Highly Wear Resistant Nanostructured Ceramic Coating Produced |
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Successes
Nanostructured TiO2 Coatings. Full development of HVOF-sprayed nanostructured TiO2 coatings with higher abrasion resistance, higher slurry-erosion resistance (at 30o and 90o) and higher bond strength when compared to conventional TiO2 coatings sprayed by APS, VPS and HVOF.
Multimodal WC-Co Coatings. Multimodal WC-Co coatings (nano and conventional particles) with higher abrasion resistance and/or more robust mechanical behavior when compared to conventional WC-Co coatings.
Nanostructured HA Coatings. HVOF-sprayed nanostructured hydroxyapatite (HA) coatings with higher crystallinity (i.e., lower HA degradation) and bond strength when compared to conventional coatings.
Nanostructured HA coating
Research at NRC-IMI
Researchers at NRC-IMI are working at the cutting edge of the materials field and focusing on performing high quality research and development recognized internationally. The knowledge and expertise gained through this work leaves NRC-IMI well positioned to anticipate challenges that society will face in five years and beyond and well equipped to develop innovative solutions.
Pre-competitive R&D. This work is pursued in the form of NRC-funded projects, consortia or technology groups, a concept developed at IMI. Member companies contribute actively to the direction of R&D programs tailored to suit common needs.
Industrial R&D.These projects, carried out in collaboration with a company, provide specific solutions for particular needs, for example, focusing on the development of market-ready technologies.
Technical services/experimental development. These projects are carried out as direct support to R&D activities.
Spin-off companies. NRC-IMI holds numerous patents resulting from its work. Licenses to commercialize IMI developed technologies are available.
Information
NRC-IMI makes tomorrow's innovations available today. For more information and to give your company an edge by accessing these resources and expertise, contact:
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Basil Marple, Ph.D. |
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Rogerio Lima, Ph.D. |
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