Li, Wensheng, Liu, Yi, Wang, Zhiping, Ma, Chao and Wang, S.C.
Effects of Ce in novel bronze and its plasma sprayed coating
Transactions of Nonferrous Metals Society of China, 22, (9), . (doi:10.1016/S1003-6326(11)61440-4).
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A novel aluminum bronze over the Cu?Al binary alloy eutectoid Cu?14Al?4.5Fe was prepared by a jointly-charging one-melting technique and conventional sand casting. The bronze coatings were atmospherically plasma sprayed on the 45# medium carbon steel substrate. The effect of rare earth Ce on the microstructures and Vickers hardness of the cast alloy and coatings were characterized by scanning electron microscopy, X-ray diffraction, electronic probe microanalysis, transmission electron microscopy and microhardness measurements. The results indicate that the hardness of both as-cast alloy and coating are enhanced by the addition of 0.6% Ce due to the refinement of ? phases which are well distributed in the matrix. The rapid solidification in the plasma spray processing retains Fe-supersaturated in the Al-bronze alloy coatings, which avoids the formation of eutectoid (?+?2) phase and stacking faults are found in the coatings with Ce added, accordingly improves the mechanical properties.
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