بررسی تأثیر دانسیته جریان اعمالی بر خواص ترشوندگی پوشش سریم اکسید تولید شده به روش رسوب‌دهی الکتروشیمیایی

فرآیندهای نوین در مهندسی مواد

دوره 14، شماره 4 - شماره پیاپی 55، دی 1399، صفحه 91-102   

نوع مقاله: علمی-پژوهشی

نویسندگان

نوید احمدی زاده¹؛ پوریا نجفی سیار^{* 2}

¹دانشجوی کارشناسی ارشد، بخش مهندسی مواد، دانشکده مهندسی، دانشگاه شیراز، شیراز، ایران

²استادیار، بخش مهندسی مواد، دانشکده مهندسی، دانشگاه شیراز، شیراز، ایران

چکیده

در این تحقیق پوشش سریم اکسید به روش رسوب‌دهی الکتروشیمیایی بر روی زیرلایه مس ایجاد شد. تأثیر دانسیته جریان اعمالی بر مورفولوژی، ساختار کریستالی، شیمی سطح، زبری سطح و رفتار ترشوندگی پوشش‌ها به ترتیب به وسیله میکروسکوپ الکترونی روبشی، آزمون تفرق اشعه ایکس، طیف سنجی تبدیل فوریه اشعه مادون قرمز، میکروسکوپ نیروی اتمی و اندازه‌گیری زاویه تماس آب بر روی پوشش‌ها بررسی شدند. نتایج حاصل نشان دادند که با افزایش دانسیته جریان اعمالی پوشش‌هایی ضخیم‌تر با میزان ترک سطحی و زبری بیشتر تولید می‌شوند. همچنین صفحات کریستالی (۰۰۲) در پوشش‌های تولید شده در دانسیته جریان‌های کمتر، رشد بیشتری داشتند و این پوشش‌ها دارای اندازه بلور بزرگ‌تری بودند. با اعمال دانسیته جریان‌های بیشتر، رفتار آبدوستی پوشش‌های سریا بیشتر شد. اگرچه در ابتدا پوشش‌های سریا رفتاری آبدوست داشتند اما پس از قرار گرفتن در معرض هوا و جذب هیدروکربن آبگریز شدند. پوشش‌های ساخته شده در دانسیته جریان‌های بالاتر میزان جذب هیدروکربن بیشتری از خود نشان دادند.

کلیدواژه‌ها

رسوب‌دهی الکتروشیمیایی؛ سریم اکسید؛ آبگریزی؛ جذب هیدروکربن

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