Hemocompatibility evaluation of plasma-nitrided austenitic stainless steels at low temperature

Yun Ho Lin, Wen Chien Lan, Keng Liang Ou, Cheng Ming Liu, Pei Wen Peng

研究成果: 雜誌貢獻文章同行評審

14 引文 斯高帕斯(Scopus)

摘要

In this study, plasma-nitrided austenitic stainless steel was prepared using a microwave system as a function of the nitriding duration. The nitride layers were characterized via scanning electron microscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy, atomic force microscopy and a Vickers micro-hardness tester. The effects of plasma nitriding on the compatibility of blood with the austenitic stainless steel were also investigated. Based on the XRD and TEM observations, it was inferred that only a single γ N phase was detected in the whole process of experiments. The γ N layer, which was formed on austenitic stainless steel, exhibited lower platelet adhesion and activation than the untreated specimens. The clotting time of the PN specimens was prolonged and increased with the treatment time. This work suggested that the blood-compatible manner of plasma nitriding by controlling surface characteristic on austenitic stainless steel improved the anticoagulant properties, and made austenitic stainless steel suitable candidates in the field of surgical and medical instruments.
原文英語
頁(從 - 到)4785-4790
頁數6
期刊Surface and Coatings Technology
206
發行號23
DOIs
出版狀態已發佈 - 七月 15 2012

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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