Characterizations of Cr-P-PTFE composite coatings electroplated from trivalent chromium-based bath
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Chromium plating is a common surface treatment technique extensively applied in industry due its excellent properties whichinclude substantial hardness, abrasion resistance, corrosion resistance, surface color, and luster. In this study, the effect ofPTFE on corrosion behavior of Cr-P plating, low carbon steel substrates are electroplated in Cr(III) baths without and withPTFE. Trivalent chromium carbon plating was electroplated from trivalent chromium sulfate-based baths with different PTFEdispersion contents. The study focused on the microstructure, PTFE content, roughness, and corrosion resistance of the Cr-P-PTFE composite plating. Scanning electron microscopy and atomic force microscopy images showed a smoother plating anda decrease in the surface roughness of the electrodeposited. The results demonstrate that PTFE eliminates the cracks withinplating by reducing internal stress. Therefore, the corrosion resistance of Cr-P-PTFE composite platings were better than thatof Cr-P alloy platings.
Abstract
Chromium plating is a common surface treatment technique extensively applied in industry due its excellent properties whichinclude substantial hardness, abrasion resistance, corrosion resistance, surface color, and luster. In this study, the effect ofPTFE on corrosion behavior of Cr-P plating, low carbon steel substrates are electroplated in Cr(III) baths without and withPTFE. Trivalent chromium carbon plating was electroplated from trivalent chromium sulfate-based baths with different PTFEdispersion contents. The study focused on the microstructure, PTFE content, roughness, and corrosion resistance of the Cr-P-PTFE composite plating. Scanning electron microscopy and atomic force microscopy images showed a smoother plating anda decrease in the surface roughness of the electrodeposited. The results demonstrate that PTFE eliminates the cracks withinplating by reducing internal stress. Therefore, the corrosion resistance of Cr-P-PTFE composite platings were better than thatof Cr-P alloy platings.
참고문헌 (16)
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