Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (52권3호 156-162)

Characterization of the Morphology and Corrosion Resistance in Electroless Ni-P-PTFE Composite Coating Prepared by Different pH Value

pH에 따른 무전해Ni-P-PTFE 복합도금의 표면형상 및 내식성에 대한 특성 연구

변영민;서선교;윤진두;나상조;류창환;황환일;
Byoun, Young-Min;Seo, Sun-Kyo;Yoon, Jin-doo;Ryu, Chanh-Hwan;Na, Sang-Jo;Hwang, Hwan-il;

한국건설생활환경시험연구원;유림티앤시;동진금속;해군2함대수리창;한국폴리텍대학;
Metal& Machinery Team, Korea Conformity Laboratories (KCL);T&C Co., LTD;Dongjin Metal Co., LTD;Republic of Korea Navy 2nd Fleet;KOREA POLYTECHNICS;

DOI : 10.5695/JKISE.2019.52.3.156

Abstract

Electroless Ni-P coatings are widely used in the chemical, mechanical, and electronic industries because of their excellent wear and abrasion resistance. In this study, The influence of pH values on properties of Ni-P-PTFE composite coatings was investigated. To improve mold lubrication, Ni-P-PTFE composite coatings at different pH value were studied. The morphology and phase structure of Ni-P-PTFE composite coatings were analyzed by scanning electron microscopy(SEM) and X-ray diffractometry(XRD). The result showed that Ni-P-PTFE composite coating is composed of Ni, P and PTFE. It exhibits an amorphous structure and good Corrosion Resistance to the substrate. Ni-P-PTFE composite coatings have higher open circuit potential than that of the substrate, which obtained at pH value of 5.0 optimal integrated properties.

Keywords

PTFE;Electroless deposition;Ni-P;Composite;Harness;Morphology;Corrosion Resistance;