Fiects of Nd:YAG laser treatment on the wettability characteristics of a zirconia-based bioceramic
Fiects of Nd:YAG laser treatment on the wettability characteristics of a zirconia-based bioceramic
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DOI：
10.1016/j.optlaseng.2005.08.001
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发表时间：
2006-08-01
影响因子：
4.6
通讯作者：
Lawrence, J.
中科院分区：
文献类型：
--
作者：
Hao, L.;Lawrence, J.
通过使用Nd:YAG激光照射增强氧化锆基生物陶瓷的润湿性特性，可以实现生物流体与材料相互作用方式的有益改变。这将最终改善骨-种植体界面。接触角测量结果表明，经过Nd:YAG激光处理的MgO-PSZ的接触角显著减小，表明激光处理改善了材料的润湿性特性。分析了激光照射对MgO-PSZ表面性能的影响及其对润湿性的影响。值得注意的是，激光处理后的完全熔化和凝固的不同微观结构产生了最大的润湿性特征。研究发现，表面粗糙度的增加虽然是影响润湿性的因素，但作用较小。表面氧含量的增加和表面能极性组分γ (p)（sv）的增加被认为是决定MgO-PSZ润湿性特征的影响因素。此外，γ (p)（sv）的增加是MgG-PSZ润湿性变化的主要机制。(c) 2005 Elsevier Ltd版权所有。
By enhancing the wettability characteristics of a zirconia-based bioceramic, magnesia partially stabilised zirconia (MgO-PSZ) using Nd:YAG laser irradiation, beneficial changes in the way biological fluids interact with the material will be achieved. This will consequently improve the bone-implant interface. Contact angle measurements revealed that the Nd:YAG laser-treated MgO-PSZ exhibited a considerable reduction in contact angle, theta, implying that laser treatment brought about improved wettability characteristics of this material. The changes in surface properties generated by the laser irradiation and their effects on the wettability characteristics of the MgO-PSZ were analysed. Notably, the complete melting and solidified different microstructure following laser treatment gave rise to the maximum wettability characteristics. It was found that although the increase in surface roughness is the factor influencing the wettability characteristics, it only plays a minor role. Both the enhancement in surface oxygen content and the increase in polar component of surface energy, gamma(p)(sv), were seen to be influential factors in determining the wettability characteristics of the MgO-PSZ. Moreover, the increase in gamma(p)(sv) was found to be the chief mechanism governing the change in wettability characteristics of the MgG-PSZ. (c) 2005 Elsevier Ltd. All rights reserved.