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首页> 外文期刊>Journal of Materials Engineering and Performance >Biocompatibly Coated 304 Stainless Steel as Superior Corrosion-Resistant Implant Material to 316L Steel
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Biocompatibly Coated 304 Stainless Steel as Superior Corrosion-Resistant Implant Material to 316L Steel

机译：生物相容涂层304不锈钢是比316L钢更好的耐腐蚀植入材料

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摘要

Surface treatments of 304 stainless steel by electro-coating and passivating in few inorganic electrolytes were found to be very effective in drastically reducing the corrosion rate of the material in stimulated body fluid (SBF) by several orders in comparison to that of 316L steel, presently being used for orthopedic implants. Polarization studies of electrodeposited hydroxyl apatite coating on 304 steel showed remarkably improved corrosion current. Cyclic polarization of the material in SBF reflected the broadened passivity region, much lower passive current, and narrower hysteresis loops. Similar effects were also found through the formation of inorganic coatings by passivation in NaF, CaNO_3, and calcium phosphate buffer solutions. Surface characterization by XRD showed the peaks of the respective coating crystals. The morphology of the coatings studied by SEM showed a flake-type structure for hydroxyapatite coating and fine spherical-subspherical particles for other coatings.
机译：与目前的316L钢相比，通过很少的无机电解质中的电镀和钝化处理304不锈钢的表面处理对于将受激体液（SBF）中材料的腐蚀速率大大降低了几个方面非常有效。用于骨科植入物。在304钢上电沉积的羟基磷灰石涂层的极化研究表明，腐蚀电流显着提高。 SBF中材料的循环极化反映了更宽的无源区域，更低的无源电流和更窄的磁滞回线。通过在NaF，CaNO_3和磷酸钙缓冲溶液中钝化形成无机涂层，也发现了类似的效果。通过XRD的表面表征显示了各个涂层晶体的峰。 SEM研究的涂层的形貌显示出用于羟基磷灰石涂层的薄片状结构和用于其他涂层的细球形-亚球形颗粒。

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