Department of Biomaterials, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
Dent Mater J. 2011;30(5):749-53. doi: 10.4012/dmj.2010-153. Epub 2011 Sep 23.
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 (CaCl(2)) 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 CaCl(2) 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 CaCl(2) solution is useful for Ca-modification of 316L SS, and Ca-modification plays important role for apatite precipitation in SBF.
为了理解使用水热处理对 316L 不锈钢（316L SS）表面进行钙（Ca）改性的可行性，将 316L SS 板在氯化钙（CaCl(2)）溶液中进行水热处理。X 射线光电子能谱分析表明，316L SS 板在 200°C 水热处理后表面用 Ca 进行了改性。并且固定的 Ca 随着 CaCl(2)浓度的增加而增加。然而，在 100°C 下处理的 316L SS 板没有发生 Ca 改性。当 Ca 改性的 316L SS 板浸入离子浓度与人体血浆相近的模拟体液（SBF）中时，其表面沉淀出低结晶磷灰石，而未经 Ca 改性的 316L SS 则没有观察到沉淀。本研究结果表明，在 CaCl(2)溶液中 200°C 的水热处理对于 316L SS 的 Ca 改性是有用的，并且 Ca 改性对于 SBF 中磷灰石的沉淀起着重要作用。
