Fabrication of zirconium oxide coatings on stainless steel by a combined laser/sol-gel technique
Fabrication of zirconium oxide coatings on stainless steel by a combined laser/sol-gel technique
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DOI：
10.1016/j.ceramint.2013.05.089
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发表时间：
2013-12-01
影响因子：
5.2
通讯作者：
Al-Waidh, A.
中科院分区：
文献类型：
--
作者：
Adraider, Y.;Pang, Y. X.;Al-Waidh, A.
开发了一种将溶胶-凝胶涂层技术与激光加工相结合的新工艺，并将其用于在不锈钢衬底上制备氧化锆涂层。该方法首先以异丙醇和水的混合物为溶剂，以叔丁醇锆(IV)为前驱体，合成了溶胶-凝胶法氧化锆粉。采用浸渍法制备溶胶-凝胶涂层，然后用4.35~10.9J/mm(2)不同能量密度的光纤激光照射干燥后的溶胶-凝胶涂层。采用多种技术对激光处理后衬底表面的氧化锆膜进行了表征，包括衰减全反射傅里叶变换红外光谱、X射线衍射、扫描电子显微镜、能量色散光谱和接触角测量。结果表明，在连续波模式下，光纤激光器可以有效地将干燥后的无定形干凝胶涂层转化为结晶的四方结构的氧化锆涂层。涂层的表面形貌随激光能量密度的不同而不同，在本研究所测试的最低激光能量时，涂层的均匀性最高。(C)2013年爱思唯尔有限公司和Techna Group S.r.l.版权所有。
A new route of combining sol gel coating technology and laser processing is developed and used for manufacturing zirconia coatings on stainless steel substrates. In this method, sol gel zirconia is first synthesised using zirconium (IV) tert-butoxide as precursor and a mixture of isopropanol and water as the solvent. The sol is coated on the substrate by dip-coating, and then the dried sol gel coating is irradiated by a fibre laser at different energy densities ranging from 4.35 to 10.9 J/mm(2). Various techniques were applied to characterise the zirconia coatings on the substrate surfaces after laser treatment, including attenuated total reflectance Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy and contact angle measurements. The results show that the fibre laser in continuous wave mode is effective to convert the as-dried amorphous xerogel coating on the substrate into zirconia coatings crystallised in tetragonal structure. The coating surface morphology varies with the laser energy densities and the highest coating uniformity is obtained at the lowest laser energy tested in this research. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.