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作者:Takeshi Yabutsuka , Yasutaka Kidokoro ...
来源:[J].Key Engineering Materials, 2020, Vol.4790, pp.125-130Trans Tech
摘要:Ti-12Ta-9Nb-6Zr-3V-O alloy, one of the shape-memory alloys with lower Young’s modulus in comparison with conventional titanium alloy, was treated with sulfuric acid to form roughened surface on the substrate. In order to impart hydroxyapatite formation ability to the Ti-12Ta...
作者:Takeshi Yabutsuka , Shigeomi Takai ...
来源:[J].Key Engineering Materials, 2020, Vol.4790, pp.151-156Trans Tech
摘要:In this study, we aimed to introduce bioactivity to bioinert zirconia by performing sandblasting process and subsequently depositing apatite nuclei (AN), which are fine particles of calcium phosphate precipitated by raising pH of SBF, on the surface of the zirconia samples. By so...
作者:Takeshi Yabutsuka , Shigeomi Takai
来源:[J].Key Engineering Materials, 2020, Vol.4790, pp.114-121Trans Tech
摘要:Cellulose nanofiber-apatite nuclei composites were fabricated by mixing apatite nuclei with cellulose nanofiber slurry and air-drying. Then apatite-forming ability could be imparted to cellulose nanofiber-apatite nuclei composites. In order to investigate significance of mixed ap...
作者:Shin Watanabe , Takeshi Yabutsuka , Shigeomi Takai
来源:[J].Key Engineering Materials, 2020, Vol.4790, pp.3-8Trans Tech
摘要:In order to improve the corrosion resistance, bioabsorbable magnesium (Mg) alloy was immersed in an aqueous solution with three times of Ca2+ and HPO42- in comparison with those of conventional SBF at the moderate temperature. After immersion in the solution, the whole...
作者:Takeshi Yabutsuka , Shun Kumazawa ...
来源:[J].Key Engineering Materials, 2016, Vol.4028, pp.259-264Trans Tech
摘要:Apatite Nucleus (AN) was attached on the surfaces of maghemite (γ-Fe2O3) particles and soaked them in SBF. By this treatment, formation of bonelike apatite was induced by AN and the apatite covered the whole surface of the γ-Fe2O3 ...
作者:Takeshi Yabutsuka , Ryoki Karashima ...
来源:[J].Key Engineering Materials, 2016, Vol.4028, pp.151-156Trans Tech
摘要:Micropores were formed on the surfaces of stainless steel (SUS) by sandblasting methods and Apatite Nuclei (AN) were formed in the pores. By this treatments, a bioactive SUS was fabricated. Apatite-forming ability of the SUS was evaluated by immersing in an acellular simulated bo...
作者:Takeshi Yabutsuka , Tomoko Hiruta ...
来源:[J].Key Engineering Materials, 2018, Vol.4724, pp.182-188Trans Tech
摘要:We aimed to clarify the effect of sulfuric acid treatment and oxygen plasma treatment on changes in surface condition of PEEK substrates during fabrication process of bioactive apatite nuclei (AN) precipitated PEEK. We treated PEEK substrate by sulfuric acid treatment. This treat...
作者:Takeshi Yabutsuka , Hiroto Mizutani ...
来源:[J].Key Engineering Materials, 2017, Vol.4322, pp.180-184Trans Tech
摘要:Micrometer-sized pores were formed on the surface of cobalt-chromium (Co-Cr) alloys by sandblasting method. In order to provide bioactivity to the Co-Cr alloys, the alloys were soaked in SBF and heated. By this treatment, amorphous calcium phosphate film was formed on the Co-Cr a...
作者:Takeshi Yabutsuka , Yasutaka Kidokoro ...
来源:[J].Key Engineering Materials, 2017, Vol.4571, pp.75-80Trans Tech
摘要:Ti-15Mo-5Zr-3Al alloy, with lower elastic modulus in comparison with Ti-6Al-4V alloy, was treated with H2SO4 solution to form pores on its surface. In order to provide apatite-forming ability to the alloy, apatite nuclei were precipitated in the pores using ...
作者:Takeshi Yabutsuka , Shigeomi Takai , Takeshi Yao
来源:[J].Key Engineering Materials, 2017, Vol.4571, pp.172-177Trans Tech
摘要:Apatite nuclei were obtained by raising pH of an acellular simulated body fluid (SBF). The apatite nuclei and levothyroxine particles were dispersed in an ultrapure water and the apatite nuclei were attached to the surface of the levothyroxine particles. By soaking in SBF, apatit...

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