Journal of the Microelectronics and Packaging Society (마이크로전자및패키징학회지)

The Korean Microelectronics and Packaging Society (한국마이크로전자및패키징학회)
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The Fabrication of Nickel-Diamond Composite Coating by Electroplating Method

전기도금방법을 이용한 Ni-Diamond 복합도금층 제조에 대한 연구

  • Moon, Yun-Sung (Dept. of Materials Science and Engineering, Hongik University) ;
  • Lee, Jae-Ho (Dept. of Materials Science and Engineering, Hongik University) ;
  • Oh, Tae-Sung (Dept. of Materials Science and Engineering, Hongik University) ;
  • Byun, Ji-Young (Metal Processing Research Center, Korea Institute of Science and Technology)
  • 문윤성 (홍익대학교 신소재공학과) ;
  • 이재호 (홍익대학교 신소재공학과) ;
  • 오태성 (홍익대학교 신소재공학과) ;
  • 변지영 (한국과학기술연구원 금속공정연구센터)
  • Published : 2007.03.30
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Abstract

The codeposition behavior of submicron sized diamond with nickel from nickel electrolytes has been investigated. Electroplating of diamond dispersed nickel composites was carried out on a rotating disk electrode (RDE). The effects of current type and current density on the electrodeposited Ni-diamond composite coating were investigated. The effects of surfactants on the composite coating were also investigated. The hardness of coating was measured with varying electroplating conditions using Micro Vickers. As diamond was incorporated into the coating, the hardness of coating as well as the wear resistance was improved. The hardness of the coating was increased as much as 100% and the wear resistance was improved as much as 27%. The hardness of composite coating layer increased slightly at the diamond content of above 20 gpl.

니켈-다이아몬드 복합 도금은 회전전극을 이용하여 미세 다이아몬드 입자가 공침된 니켈 복합도금층에 대하여 연구하였다. 복합층의 도금시에 인가한 전류밀도와 전류형태(직류, 펄스)가 도금층의 경도와 표면형상에 미치는 영향에 대하여 알아보았으며 첨가제의 영향에 대하여도 연구하였다. 표면조직을 FESEM을 이용하여 관찰하였으며 Micro Victors를 사용하여 도금층의 경도를 측정하였다. 복합도금층에 다이아몬드가 들어감에 따라 경도는 100%, 마찰저항은 27%까지 증가하였다. 또한 다이아몬드 함량이 20gpl 이상인 경우 경도값이 완만하게 증가하였다.

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