| 학회 | 한국화학공학회 |
| 학술대회 | 2007년 가을 (10/26 ~ 10/27, 한국과학기술원) |
| 권호 | 13권 2호, p.1844 |
| 발표분야 | 에너지/환경 |
| 제목 | Characterization of Corrosion Protective and Mechanical Properties of Electrodeposited CoWP Coatings |
| 초록 | Amorphous Co containing films show potential properties as a coating material such as corrosion protective, hardness, and wear resistance. In this work, the characterization of corrosion protective and mechanical properties of electrodeposited CoWP coating was carried out and a comparison is made with chromium coatings which are widely used as coating material. Electrochemical analyses were performed using a three-electrode cell. For voltammetry experiments, a glassy carbon electrode of geometrical area of 0.0707cm2 was used as a working electrode. The electroplating of CoWP has been performed from a citrate bath containing CoSO4, Na2WO4, and NaH2PO2 on plain carbon steel. The electrochemical analyses suggest that the deposition occurs under mass transfer control and via an instantaneous nucleation. It is investigated that CoWP consists of 81% Co, 10% W, and 9% P by EDX analysis and it has an amorphous structure. CoWP coating shows nobler corrosion potential (-0.54V) than Cr (-0.60V). The hardness of CoWP increases with annealing temperature from 200 to 600℃. |
| 저자 | 윤형진, S. M. S. I. Dulal, 신치범, 김창구 |
| 소속 | 아주대 |
| 키워드 | CoWP; coating; corrosion |
| 원문파일 | 초록 보기 |
