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A Study on the Ceramic Coating of Biopsy Needle  

Cho, Sung-Man (R&D Division KMC Corporation)
Chung, Hyup-Jae (Graduate School of Mechanical Engineering, Kyunghee Univ.)
Kim, Man-Tae (Gumi Electronics & Information Technology Research Institute)
Rhee, Kyong-Yop (Industrial Liaison Research Institute, College of Engineering, Kyunghee Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.26, no.9, 2009 , pp. 121-126 More about this Journal
Abstract
Stainless steel 316L (STS 316L) is widely used as a material of biopsy needle. However it has a side effect that tissue can be damaged by electrochemical operation between tissue and STS 316L. Many studies have been made on the ceramic coating of biopsy needle to reduce the side effect. In this study, STS 316L was coated with three bioceramics, $Al_2O_3$, $SiO_2$ and $ZrO_2$ using a RF magnetron sputtering method. The effects of ceramic coating on the electrical conductivity and coating strength of ceramic-coated STS 316L were investigated. The results showed that the electrical conductivity of ceramic-coated STS 316L was much lower than that of uncoated STS 316L. The coating strength of $ZrO_2$-coated STS 316L was 30% and 70% higher, respectively than those of $Al_2O_3$-coated STS 316L and $SiO_2_3$-coated STS 316L.
Keywords
Stainless Steel 316L; Bioceramics; Electropolishing; RF Magnetron Sputtering; Scratch Test;
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Times Cited By KSCI : 1  (Citation Analysis)
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