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首页> 外文期刊>International Journal of Electrochemical Science >Corrosion Protection of AISI 316L Stainless Steel with the Sol- Gel Yttria Stabilized ZrO2 Films: Effects of Sintering Temperature and Doping
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Corrosion Protection of AISI 316L Stainless Steel with the Sol- Gel Yttria Stabilized ZrO2 Films: Effects of Sintering Temperature and Doping

机译：溶胶-凝胶氧化钇稳定的ZrO 2 膜对AISI 316L不锈钢的腐蚀防护：烧结温度和掺杂的影响

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摘要

Nanostructured solel zirconia (ZrO2) films containing 3, 5 and 7 mol % Y2O3 of one and three layerswere prepared on stainless steel X2CrNiMo17-12-2 (AISI 316L) surface by the dip coating method.Yttria stabilized zirconia (YSZ) deposited films were sintered at 400 and 600 C. For the preparationof sol zirconium(IV) butoxide was used as precursor, i-propyl alcohol as a solvent with addition ofnitric acid as a catalyst, acetylacetone as chelating agent and water for hydrolysis. Thickness of sol-gelYSZ films deposited on stainless steel was determined by glow-discharge optical emissionspectrometry (GD-OES). It was found that thickness of deposited films is barely affected by yttriacontent while increases by increasing the number of layers and temperature of sintering. The crystalstructure of films was determined by X-ray diffraction. The corrosion resistances of uncoated andcoated specimens were studied by electrochemical impedance spectroscopy (EIS) and potentiodynamicpolarization in simulated marine environment (3.5 wt. % NaCl aqueous solution) at room temperature.The influence of yttria stabilized zirconia (YSZ) layers number and temperature of sintering on thecorrosion protection was examined as well. Sol-gel derived YSZ films are capable of appreciableimprovement in corrosion resistance of stainless steel in the investigated corrosive medium.
机译：通过浸涂法在不锈钢X2CrNiMo17-12-2（AISI 316L）表面上制备了分别含有3、5和7 mol％Y2O3的一层和三层Y2O3的纳米结构单晶氧化锆（ZrO2）膜。在400和600℃下烧结。制备丁醇锆（IV）用作前体，以异丙醇为溶剂，加硝酸作为催化剂，乙酰丙酮为螯合剂，和水解用水。通过辉光放电光发射光谱法（GD-OES）确定沉积在不锈钢上的sol-gelYSZ膜的厚度。发现沉积膜的厚度几乎不受氧化钇含量的影响，而通过增加层数和烧结温度而增加。膜的晶体结构通过X射线衍射测定。在室温下，在模拟海洋环境（3.5 wt％NaCl水溶液）中，通过电化学阻抗谱（EIS）和电势极化研究了未镀膜和镀膜样品的耐蚀性。氧化钇稳定氧化锆（YSZ）层数和烧结温度的影响还检查了防腐性能。溶胶凝胶衍生的YSZ膜能够在研究的腐蚀性介质中显着提高不锈钢的耐腐蚀性。

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