Hydrothermal calcium modification of 316L stainless steel and its apatite forming ability in simulated body fluid

DOI Web Site 被引用文献1件 参考文献39件
  • VALANEZAHAD Alireza
    Department of Biomaterials, Faculty of Dental Science, Kyushu University
  • ISHIKAWA Kunio
    Department of Biomaterials, Faculty of Dental Science, Kyushu University
  • TSURU Kanji
    Department of Biomaterials, Faculty of Dental Science, Kyushu University
  • MARUTA Michito
    Department of Biomaterials, Faculty of Dental Science, Kyushu University
  • MATSUYA Shigeki
    Section of Bioengineering, Department of Dental Engineering, Fukuoka Dental College

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To understand the feasibility of calcium (Ca) modification of type 316L stainless steel (316L SS) surface using hydrothermal treatment, 316L SS plates were treated hydrothermally in calcium chloride (CaCl2) solution. X-ray photoelectron spectroscopic analysis revealed that the surface of 316L SS plate was modified with Ca after hydrothermal treatment at 200°C. And the immobilized Ca increased with CaCl2 concentration. However no Ca-modification was occurred for 316L SS plates treated at 100°C. When Ca-modified 316L SS plate was immersed in simulated body fluid (SBF) with ion concentrations nearly equal to those of human blood plasma, low crystalline apatite was precipitated on its surface whereas no precipitate was observed on non Ca-modified 316L SS. The results obtained in the present study indicated that hydrothermal treatment at 200°C in CaCl2 solution is useful for Ca-modification of 316L SS, and Ca-modification plays important role for apatite precipitation in SBF.

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