کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1660887 | 1008413 | 2007 | 4 صفحه PDF | دانلود رایگان |
In this work, nano-TiO2 powders were deposited on titanium alloy substrates by atmospheric plasma spraying, followed by plasma immersion ion implantation (PIII) using hydrogen, oxygen and ammonia gases. The bioactivities of PIII-treated TiO2 coatings were evaluated by the formation of apatite on their surface after soaked in simulated body fluids (SBF) for a period of time. As-sprayed TiO2 coating is composed of rutile, anatase and TiO2−x (most of them is Ti3O5). After immersion in SBF for two weeks, the hydrogen PIII-treated TiO2 coating can induce bone-like apatite formation on its surface but apatite cannot be formed on the surface of as-sprayed and oxygen, ammonia PIII-treated TiO2 coatings. The results obtained indicated that a hydrogenated surface plays a very important role to induce bioactivity of TiO2 coatings.
Journal: Surface and Coatings Technology - Volume 201, Issue 15, 23 April 2007, Pages 6878–6881