| 학회 |
한국재료학회 |
| 학술대회 |
2012년 가을 (11/07 ~ 11/09, 라카이샌드파인 리조트) |
| 권호 |
18권 2호 |
| 발표분야 |
B. 나노재료(Nanomaterials) |
| 제목 |
Effect of pulse electrodeposition parameters on the properties of electrodeposited Ni-Si3N4 composite coatings |
| 초록 |
Ni-Si3N4 composite coatings were prepared by pulse current (PC) electrodeposition and direct current (DC) electrodeposition techniques. The microstructures of the coatings were characterized by scanning electron microscopy (SEM), vickers microhardness, X-Ray Diffraction (XRD) and wear-friction tests. The results showed that the micro-structure and wear performance of the coatings were affected by the electrodeposition techniques. Pulse current electrodeposited Ni-Si3N4 composite coatings exhibited higher microhardness, smooth surface, and better wear resistance properties as compared to coatings prepared under DC condition. The Ni-Si3N4 composite coatings prepared at 50 Hz pulse frequency with 10 % duty cycles has shown higher codeposition of nano-particles. Consequently, increased microhardness and less plastic deformations occurred in coatings during sliding wear test. The XRD patterns revealed that the increased pulse frequencies changed the preferred (100) nickel crystallite orientations into mixed orientations. |
| 저자 |
Gobinda Gyawali1, Soo Wohn Lee2
|
| 소속 |
1Research Center for Eco Multifunctional Nano Materials, 2Sun Moon Univeristy |
| 키워드 |
Composite electrodeposition; Ni-Si3N4; Pulse plating
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| E-Mail |
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