Details

Autor(en) / Beteiligte

• 许利剑 龚竹青 汤建新 贺全国 何龙跃 杜晶晶

Titel

Ni-Cr alloy electrodepositing technology on Fe substrate and coating performance

Ist Teil von

• Journal of Central South University of Technology, 2007-04, Vol.14 (2), p.181-185

Ort / Verlag

School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China

Erscheinungsjahr

2007

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The Ni-Cr alloy electrodepositing technology on iron substrate in the chlorid-sulfate solution and the impacts of main processing parameters on coating composition were studied. The optimal Ni-Cr alloy electrodepositing conditions are that the cathode current density is 16 A/dm^2, the plating solution temperature is 30 ℃ and the pH value is 2.5. The bright, compact coating gained under the optimal conditions has good cohesion and 24.1% Cr content. The results show that the coating is composed of crystalline, the average grain size is 82 nm and the higher the Cr content of coating, the larger the rigidity, and the higher the corrosion resistance. The rigidity of coating reaches 78.6（HR30T） and the passivation area broadens to 1.4 V when the Cr content of coating is 24.1%.