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K2Ti6O13晶须不仅具有优越的力学性能和良好的生物学特性,而且具有与常规Ti合金相近的膨胀系数。本研究尝试选用K2Ti6O13晶须(K2Ti6O13w)作为生物活性涂层材料,利用BCC方法(混合-包埋-煅烧)在Ti合金基体上成功制备了K2Ti6O13w涂层,并对涂层的表面形态、结合强度和生物活性进行了研究。结果表明,涂层由K2Ti6O13晶须和少量的TiO2和K2Ti4O9组成,其表面粗糙多孔。由于膨胀系数的良好匹配,涂层与基体之间具有较高的结合强度,达24MPa。模拟体液培养后,涂层表面沉积了一层多孔的骨状羟基磷灰石,它由平均直径20nm,长200nm的羟基磷灰石纳米线组成,这表明钛酸钾涂层具有良好的生物活性。涂层较高的生物活性与其独特的生化特性和组分密切相关。
K2Ti6O13 whisker not only has excellent mechanical properties and good biological properties, but also with conventional Ti alloy similar expansion coefficient. In this study, K2Ti6O13 whiskers (K2Ti6O13w) were selected as bioactive coating materials. The K2Ti6O13w coating was successfully prepared on Ti alloy by BCC method (Blend-Buried-Calcined). The surface morphology, bonding strength And biological activity were studied. The results show that the coating consists of K2Ti6O13 whiskers and a small amount of TiO2 and K2Ti4O9, the surface of which is rough and porous. Due to the good match of the coefficient of expansion, there is a high bond strength between the coating and the substrate of up to 24 MPa. After simulated body fluid culture, a layer of porous bone hydroxyapatite was deposited on the surface of the coating consisting of hydroxyapatite nanowires with an average diameter of 20 nm and a length of 200 nm, indicating that the potassium titanate coating has good bioactivity . The higher biological activity of the coating is closely related to its unique biochemical characteristics and components.