Journal
JOURNAL OF THERMAL SPRAY TECHNOLOGY
Volume 15, Issue 4, Pages 495-500Publisher
ASM INTERNATIONAL
DOI: 10.1361/105996306X146857
Keywords
amorphous coatings; cold gas dynamic spraying; nanostructured coatings; nanostructured materials
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This paper describes recent efforts to synthesize iron-base amorphous alloys coatings using cold gas dynamic spraying. Characterization of the gas-atomized iron-base (Fe-Cr-Mo-W-C-mn-Si-Zr-B) powder shows that the powder is fully amorphous when the particle diameter is below 20 pin. The coatings produced were composed of the same microstructure as the one observed in the feedstock powder. The overall deformation suggests the occurrence of a localized deformation process at the particle/particle boundary and a possible adiabatic deformation softening inside the powder particles during splat formation. The synthesis of fully amorphous, porous-free coatings using cold gas dynamic spraying was demonstrated in this work.
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