| 학회 |
한국재료학회 |
| 학술대회 |
2013년 봄 (05/23 ~ 05/24, 여수 엠블호텔(THE MVL)) |
| 권호 |
19권 1호 |
| 발표분야 |
E. 구조 재료(Structural Materials) |
| 제목 |
Studies on properties of pulse electrodeposited Ni-TiB2 composite coatings |
| 초록 |
Nickel-titanium diboride (Ni-TiB2) composite coatings were successfully fabricated by pulse electrodeposition techniques from nickel sulfamate bath containing dispersed submicron TiB2 particles. The effect of TiB2 codeposition on the morphological, microstructural, microhardness and anti-corrosive properties of the composite coatings have been investigated by using scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS) system, X-ray diffraction (XRD), vickers microhardness, and electrochemical impedance spectroscopy (EIS) techniques. Incorporation of TiB2 particles into the nickel matrix has modified the regular crystal growth of nickel. The XRD patterns revealed that the preferred (100) crystallite orientation of pure nickel has been modified into mixed orientations by the enhancement of (111) and attenuation of (200) diffraction intensities by the incorporation of TiB2 particles into the nickel matrix. Vickers microhardness of the Ni-TiB2 composite coating is found to be increased which is nearly 3 times higher than pure nickel coating. The results obtained by polarization curves and EIS analysis in 3.5 wt.% NaCl solution have shown the improved corrosion resistance properties of Ni-TiB2 composite coating over pure nickel electrodeposit. |
| 저자 |
Gobinda Gyawali1, Hyung Suk Kim2, Soo Wohn Lee3
|
| 소속 |
1Research Center for Eco Multi-Functional Nano Materials, 2Sun Moon Univ., 3Asan |
| 키워드 |
Electrodeposition; Composite coating; TiB2; Corrosion
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| E-Mail |
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