Characterization of calcium phosphate coatings deposited by Nd:YAG laser ablation at 355 nm:: influence of thickness
Characterization of calcium phosphate coatings deposited by Nd:YAG laser ablation at 355 nm:: influence of thickness
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DOI：
10.1016/s0142-9612(01)00327-1
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发表时间：
2002-05-01
期刊：
影响因子：
14
通讯作者：
Morenza, JL
中科院分区：
文献类型：
--
作者：
Fernández-Pradas, JM;Clèries, L;Morenza, JL
采用Nd：YAG激光器的355 nm脉冲激光烧蚀法制备磷酸钙涂层。在相同的条件下获得所有涂层，但是在不同数量的脉冲之后停止沉积以获得具有不同厚度的涂层。研究了涂层厚度对涂层结构和力学性能的影响。通过扫描电子显微镜、掠入射X射线衍射仪和拉曼光谱仪对涂层结构进行了表征。通过划痕试验评价其力学性能。涂层的形态主要由液滴的存在决定。涂层主要由羟基磷灰石、α-磷酸三钙和无定形磷酸钙组成。较薄的涂层在划痕试验中承受较高的失效载荷。(C)2002爱思唯尔科技有限公司。保留所有权利。
Calcium phosphate coatings were deposited by pulsed laser ablation with a radiation of 355 nm from a Nd:YAG laser. All the coatings were obtained at the same conditions, but deposition was stopped after different number of pulses to get coatings with different thickness. The influence of thickness in the structural and mechanical properties of the coatings was investigated. Coatings structure was characterised by scanning electron microscopy, grazing incidence X-ray diffractometry and Raman spectroscopy. The mechanical properties were evaluated by scratch test. The morphology of the coatings is dominated by the presence of droplets. The coatings are composed mainly of hydroxyapatite, alpha tricalcium phosphate and amorphous calcium phosphate. Thinner coatings withstand higher loads of failure in the scratch test. (C) 2002 Elsevier Science Ltd. All rights reserved.