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Materials 2016, 9(3), 204;

Cavitation Erosion of Cermet-Coated Aluminium Bronzes

Department of Materials and Manufacturing Engineering, Politehnica University of Timisoara, 300026 Timisoara, Romania
Department of Mechanical Machines, Equipments and Transportation, Politehnica University of Timisoara, 300026 Timisoara, Romania
Author to whom correspondence should be addressed.
Academic Editor: Peter J. Uggowitzer
Received: 22 January 2016 / Revised: 9 March 2016 / Accepted: 10 March 2016 / Published: 17 March 2016
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The cavitation erosion resistance of CuAl10Ni5Fe2.5Mn1 following plasma spraying with Al2O3·30(Ni20Al) powder and laser re-melting was analyzed in view of possible improvements of the lifetime of components used in hydraulic environments. The cavitation erosion resistance was substantially improved compared with the one of the base material. The thickness of the re-melted layer was in the range of several hundred micrometers, with a surface microhardness increasing from 250 to 420 HV 0.2. Compositional, structural, and microstructural explorations showed that the microstructure of the re-melted and homogenized layer, consisting of a cubic Al2O3 matrix with dispersed Ni-based solid solution is associated with the hardness increase and consequently with the improvement of the cavitation erosion resistance. View Full-Text
Keywords: cavitation erosion; bronze-alloys; plasma spray; oxide; metal; laser remelting cavitation erosion; bronze-alloys; plasma spray; oxide; metal; laser remelting

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Mitelea, I.; Oancă, O.; Bordeaşu, I.; Crăciunescu, C.M. Cavitation Erosion of Cermet-Coated Aluminium Bronzes. Materials 2016, 9, 204.

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