Improvement in mechanical properties of nano-structured HA/TiO2 multilayer coatings deposited by high velocity suspension flame spraying (HVSFS)
Improvement in mechanical properties of nano-structured HA/TiO2 multilayer coatings deposited by high velocity suspension flame spraying (HVSFS)
复制标题
高速悬浮火焰喷涂 (HVSFS) 沉积的纳米结构 HA/TiO2 多层涂层的机械性能得到改善
DOI：
10.1016/j.surfcoat.2018.02.058
复制
发表时间：
2018-05
影响因子：
5.4
通讯作者：
Qing-Yu Chen
中科院分区：
文献类型：
--
作者：
Hai-Long Yao;Hong-Tao Wang;Xiao-Bo Bai;Gang-Chang Ji;Qing-Yu Chen
为了提高HA涂层的力学性能，采用纳米HA和TiO2粉体，采用高速悬浮火焰喷涂（HVSFS）方法制备了由TiO2结合层、不同TiO2含量的HA/TiO2中间层和HA顶层组成的纳米结构HA/TiO2多层涂层。通过 XRD、XPS、FTIR 和 SEM 对物相组成、组成和微观结构进行了表征。研究了多层涂层的机械性能并与纯 HA 涂层进行比较。结果表明，多层涂层主要由HA和TiO2相组成，涂层/基体界面结合良好，表面多孔，涂层厚度呈现梯度化学成分。 HA/TiO2 中间层的显微硬度和杨氏模量随着 TiO2 含量的增强而增加，HA/TiO2 多层涂层从 TiO2 粘结层到 HA 顶层逐渐呈现出机械性能。与纯HA涂层相比，由于TiO2增强，HA/TiO2双层涂层的拉伸强度有所提高。 HA/TiO2多层涂层的磨损性能通过钉盘法进行了测试，并且由于中间层的存在而得到改善，从而导致比纯HA涂层的磨损率更低。
In order to improve mechanical properties of HA coatings, nano-structured HA/TiO2multilayer coatings composed of TiO2bond layer, HA/TiO2intermediate layer with different TiO2contents and HA top layer were prepared by a high velocity suspension flame spraying (HVSFS) method using nano-sized HA and TiO2powders. Phase constitution, compositions and microstructures were characterized by XRD, XPS, FTIR and SEM. Mechanical properties of multilayer coatings were investigated in comparison with the pure HA coating. Results show that multilayer coatings were mainly composed of HA and TiO2phases, and presented well-bonded coating/substrate interfaces and porous surfaces as well as graded chemical compositions in coating thickness. Microhardness and Young's modulus of HA/TiO2intermediate layers were increased with the TiO2contents due to its reinforcement, and HA/TiO2multilayer coatings revealed gradual mechanical properties from the TiO2bond layer to HA top layer. Tensile strengths of HA/TiO2double-layer coatings were improved due to TiO2reinforcement in comparison with the pure HA coating. Wear properties of HA/TiO2multilayer coatings were tested by a pin-on-disc method and were improved due to the presence of intermediate layers resulting in lower wear rates than that of the pure HA coating.
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DOI：
10.1016/j.msec.2013.09.017
发表时间：
2014-01-01
影响因子：
7.9
作者：
Bolelli, Giovanni;Bellucci, Devis;De Nardo, Luigi
通讯作者：
De Nardo, Luigi
影响因子：
6.6
作者：
Xuan Zhou;P. Mohanty
通讯作者：
Xuan Zhou;P. Mohanty
DOI：
10.1016/j.mseb.2012.03.034
发表时间：
2012-06
影响因子：
3.6
作者：
Cheng-Kuo Lee
通讯作者：
Cheng-Kuo Lee
DOI：
10.1007/s12613-013-0742-3
发表时间：
2013-04
期刊：
International Journal of Minerals, Metallurgy, and Materials
影响因子：
--
作者：
M. Zakeri;E. Hasani;M. Tamizifar
通讯作者：
M. Zakeri;E. Hasani;M. Tamizifar
影响因子：
3.9
作者：
S. Leigh;C. Lin;C. Berndt
通讯作者：
S. Leigh;C. Lin;C. Berndt