Deposition of multicomponent chromium carbide coatings using a non-conventional source of chromium and silicon with micro-additions of boron
JE González Ruíz, A Rodríguez Cristo… - Materials …, 2017 - SciELO Brasil
JE González Ruíz, A Rodríguez Cristo, A Paz Ramos, R Quintana Puchol
Materials Research, 2017•SciELO BrasilThe chromium carbide coatings are widely used in the mechanical industry due to its
corrosion resistance and mechanical properties. In this work, we evaluated a new source of
chromium and silicon with micro-additions of boron on the deposition of multi-component
coatings of chromium carbides in W108 steel. The coatings were obtained by the pack
cementation method, using a simultaneous deposition at 1000 oC for 4h. The coatings were
analyzed by X-ray diffraction, X-ray energy dispersive spectroscopy, optical microscopy …
corrosion resistance and mechanical properties. In this work, we evaluated a new source of
chromium and silicon with micro-additions of boron on the deposition of multi-component
coatings of chromium carbides in W108 steel. The coatings were obtained by the pack
cementation method, using a simultaneous deposition at 1000 oC for 4h. The coatings were
analyzed by X-ray diffraction, X-ray energy dispersive spectroscopy, optical microscopy …
The chromium carbide coatings are widely used in the mechanical industry due to its corrosion resistance and mechanical properties. In this work, we evaluated a new source of chromium and silicon with micro-additions of boron on the deposition of multi-component coatings of chromium carbides in W108 steel. The coatings were obtained by the pack cementation method, using a simultaneous deposition at 1000 oC for 4h. The coatings were analyzed by X-ray diffraction, X-ray energy dispersive spectroscopy, optical microscopy, microhardness test method and pin-on-disc wear test. It was found that the coatings formed on W108 steel were mainly constituted by (Cr,Fe)23C6, (Cr,Fe)7C3, Cr5-xSi3-xCx+z, Cr3B0,44C1,4 and (or) Cr7BC4. The carbide layers showed thicknesses between 14 and 15 µm and maximum values of microhardness between 15.8 and 18.8 GPa. Also, the micro-additions of boron to the mixtures showed statistically significant influence on the thickness, microhardness and abrasive wear resistance of the carbide coatings.
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