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The development of constituent phases and microstructure in plasma sprayed Al 2 O 3 –13wt.%TiO 2 coatings and reconstituted nanocrystalline feed powder was investigated as a function of processing conditions. The microstructure of the coatings was found to consist of two distinct regions; one of the regions was completely melted and quenched as splats, and the other was incompletely...
WC-Co coatings have been deposited by high velocity oxy-fuel thermal spraying of conventional and nanocomposite powders which contain WC grains in the size range 2-5μm and 70-250nm, respectively. The coatings differed not only in microstructural scale, but also in the nature and proportion of the phases present and in the overall degree of decarburization. A model describing the evolution of microstructure...
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