退火温度对溶胶-凝胶法制备氧化锆薄膜性能影响的研究

发布时间：2018-10-09 10:53

【摘要】：采用溶胶-凝胶法,在316L不锈钢基底上以5 cm/min的提拉速度制备氧化锆(ZrO_2)薄膜。用XRD分析了不同退火温度下制备的氧化锆干凝胶粉末的物相结构;采用扫描电镜观察了薄膜表面的显微结构;对比了不同退火温度对薄膜亲/疏水性能的影响;通过计算薄膜的表面能及其与血液组分的界面张力,分析了退火温度对氧化锆薄膜血液相容性的影响;测试了试样的动电位极化曲线并分析其耐腐蚀性能。结果表明:采用500℃退火可以得到晶粒颗粒小、表面平整的四方相结构氧化锆薄膜,其与血液相容性最好,耐腐蚀性较强。
[Abstract]:Zirconia (ZrO_2) thin films were prepared on a 316L stainless steel substrate by sol-gel method at a Czochralski rate of 5 cm/min. The phase structure of zirconia xerogel powder prepared at different annealing temperatures was analyzed by XRD, the microstructure of the film surface was observed by scanning electron microscope, and the effect of annealing temperature on the hydrophilic / hydrophobic properties of the film was compared. The effect of annealing temperature on the blood compatibility of zirconia film was analyzed by calculating the surface energy and the interfacial tension between the film and the blood component. The potentiodynamic polarization curve of the sample was measured and its corrosion resistance was analyzed. The results show that the tetragonal structure zirconia thin film with small grain size and flat surface can be obtained by annealing at 500 鈩，

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