اثر چگالی جریان رسوب‌دهی بر خواص پوشش‌های کامپوزیتی Ni-Cu/Al2O3

مهندسی متالورژی و مواد

مقاله 2، دوره 31، شماره 1 - شماره پیاپی 21، اسفند 1398، صفحه 13-26   

نوع مقاله: علمی و پژوهشی

شناسه دیجیتال (DOI): 10.22067/ma.v31i1.63325

نویسندگان

حامد صفایی¹؛ مرتضی علیزاده^{* 1}؛ عرفان صلاحی نژاد²

¹دانشگاه صنعتی شیراز

²دانشگاه صنعتی خواجه نصیرالدین طوسی

چکیده

در این تحقیق، پوشش‌های کامپوزیتی Ni-Cu/Al2O3 به روش رسوب‌دهی الکتریکی از حمّام سیترات- آمونیاکی ایجاد شدند. اثر چگالی جریان بر مورفولوژی، ترکیب شیمیایی، سختی و رفتار خوردگی پوشش‌ها مورد بررسی قرار گرفت. مورفولوژی، ترکیب شیمیایی و رفتار خوردگی پوشش‌ها به ترتیب توسّط میکروسکوپ الکترونی روبشی، آنالیز طیف‌سنجی تفکیک انرژی پرتوی ایکس و آزمون پلاریزاسیون تافل مورد بررسی قرار گرفت. نتایج نشان داد که تغییر در چگالی جریان رسوب‌دهی باعث تغییر در ترکیب شیمیایی و مورفولوژی پوشش‌ها می‌شود. همچنین، با افزایش چگالی جریان ریزسختی پوشش‌ها ابتدا افزایش و سپس کاهش می‌یابد، درحالی‌که مقاومت به خوردگی پوشش‌ها کاهش می‌یابد.

کلیدواژه‌ها

پوشش های کامپوزیتی؛ چگالی جریان؛ ریزساختار؛ ریزسختی؛ رفتار خوردگی

سایر فایل های مرتبط با مقاله

2-alizade - Revised.pdf

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