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1895 |
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Monday, May 03, 2010, Moor Room 4:20 PM Biomedical Coatings |
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A morphological study of hydroxyapatite splats flame sprayed onto commercially pure titanium |
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Saeed Saber-Samandari* / Swinburne University of Technology, Australia Christopher Berndt / Swinburne University of Technology, Australia Karlis Gross/ Swinburne University of Technology, Australia James Wang/ Swinburne University of Technology, Australia |
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Thermal spray coatings consist of aggregates of solidified and flattened droplets. Although research has been directed into the examination of bulk coatings, it is only recently the emphasis has been placed back onto the examination of individual splats as a means of understanding the properties of the coating. In this study the micromechanical properties of thermally sprayed hydroxyapatite (HAp) splats were investigated. As well, the grain morphology and topography of the solidified flattened droplets were examined. The grain morphology of single, micro-deposited HAp coatings onto commercially pure Ti (CP Ti) was investigated using scanning electron microscopy (SEM). Also, the topography of splats sprayed at room temperature, 100 oC and 300 oC were investigated. The intention was to relate the processing conditions to the splat geometry and, hence, the micro-mechanical characteristics of splats that, together, confer extrinsic properties onto the bulk coating. |