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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48241

Title: Effects of Complexing Agents and Current Density on Carbon Content of Trivalent Chromium Carbon Coating and Its Properties
Authors: Hung-Hua Sheu
Chien-Hung Lin
Shun-Yi Jian
Hung-Bin Lee
Bing-Ruei Yang
Ming-Der Ger
Contributors: 國立臺灣海洋大學:光電與材料科技學系
Keywords: chromium carbon coatings
complexing agents
contact angle
ICR values
Date: 2016-08
Issue Date: 2018-08-20T03:21:30Z
Publisher: International Journal of Electrochemical Science
Abstract: Abstract: Chromium carbon coatings were electroplated from trivalent chromium chloride based electrolyte at
different complex agents such as HCOONH4, HCOONa and Glycine. The effects of different complex
agents on morphology, chemical composition, contact angle, ICR values and corrosion resistance of
coatings were investigated. All the electroplated conditions indicated that the carbon content within
chromium carbon coatings decreased with an increase of current density due to the chelation strength
of complexing agents in the bath collapsed by a higher drive force (higher current density). Results
also presented that the chromium carbon coatings electroplated from “HCOONa” will form granular
structure with an increase of current density, and leading to a poor ICR values. Both coatings
electrodeposited from “HCOONH4” and “Glycine” has better contact angle (about 105 and 112º) and
ICR values (<20 mΩcm2at 160 N cm-2), but the “Glycine” has a poor corrosion resistance. In this
study, chromium carbon coatings electroplated from“HCOONH4” have better contact angle (105º),
ICR values (<20 mΩcm2at 160 N cm-2) and corrosion resistance (3.90×10-7 A/cm2), and has high application
potential in bipolar plates.
Relation: 11 pp.7099 – 7110
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48241
Appears in Collections:[光電科學研究所] 期刊論文

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