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Title: Effect of doubled sandblasting process and basic simulated body fluid treatment on fabrication of bioactive stainless steels
Authors: Yabutsuka, Takeshi
Karashima, Ryoki
Takai, Shigeomi
Yao, Takeshi
Author's alias: 薮塚, 武史
高井, 茂臣
八尾, 健
Keywords: stainless steels
hydroxyapatite-forming ability
‘Basic SBF’ treatment; pores formation
sandblasting process
interlocking effect
surface roughness
surface area
Issue Date: Aug-2018
Publisher: MDPI AG
Journal title: Materials
Volume: 11
Issue: 8
Thesis number: 1334
Abstract: In our recent study, we aimed to impart hydroxyapatite (HA)-forming to bioinert stainless steels (SUS316L). The surfaces of SUS316L specimen were treated by a sandblasting process using alumina grinding particles with 14.0 or 3.0 μm for average particle size, respectively. In addition, a doubled sandblasting process (DSP) using the 14.0 μm particles and subsequently 3.0 μm ones were also conducted. Compared with the case of the 14.0 μm particles, the 3.0 μm particles were available to increase the surface roughness and the surface area of the specimen. Moreover, these values were further increased in the case of the DSP. These specimens were soaked in simulated body fluid (SBF) at pH = 8.4, 25 °C and were directly heated in the solution by electromagnetic induction. By this treatment, formation of CaP was induced on each specimen. These materials performed high HA-forming ability in SBF. Average bonding strength of the HA film formed on them in SBF was increased depending on the increase of surface roughness and surface area. These results indicated that sandblasting condition was an important factor to improve interlocking effect related to the increase of the surface roughness and the surface area.
Rights: © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
URI: http://hdl.handle.net/2433/235363
DOI(Published Version): 10.3390/ma11081334
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