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| Abstract No.: |
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Scheduled at:
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Wednesday, May 05, 2010, Olivia Room 11:20 AM
Properties 2
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| Title: |
Testing the reliability of thermal spray coatings with
micro-nanoindentation: methodology, scope of analysis and case studies
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| Authors: |
Karlis Gross* / Riga Biomatrials Innovation and Development Centre, Latvia
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| Abstract: |
As thermal spray coatings and their developments grow, it is important to provide reliable testing techniques. Mechanical properties represent an important property for coatings, regardless of the application. The introduction of nanoindentation has added another testing technique, but its capabilities are largely not utilized by the thermal spray profession. Nanoindentation is a useful technique to assess the properties of the single splat and bonding to the surrounding material, while microindentation can measure the properties of the coating. The combined use of both of these techniques has been used to measure the anisotropy within thermally sprayed coatings. A survey of the different types instruments together with their capabilities will be given to illustrate the types of studies possible with the different instruments. This will act as a guide to new users, and provide an understanding of the range of properties that can be determined. Application of indentation to cross-sections, surface of coatings, single splats and the application to coatings from different industries (thermal barrier coatings, biomedical and automotive) will be discussed. The developments in thermal spray with suspension plasma spraying positions this technique to readily benefit from nanoindentation.
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