بررسی مقاومت به خوردگی و سختی فولاد L316 با پوشش اکسید‌گرافنِ احیا‌شده/کاربید بور/کاربید تیتانیوم لایه‌نشانی شده با روش لیزر

روغنی, محمد; خسروی, محمد; یعقوبی نژاد, یدالله

doi:10.22034/stme.2025.540373.1157

بررسی مقاومت به خوردگی و سختی فولاد L316 با پوشش اکسید‌گرافنِ احیا‌شده/کاربید بور/کاربید تیتانیوم لایه‌نشانی شده با روش لیزر

نوع مقاله : مقاله علمی

نویسندگان

محمد روغنی ¹

محمد خسروی ²

یدالله یعقوبی نژاد ³

¹ کارشناسی ‌ارشد، دانشکده مهندسی مکانیک و مواد، دانشگاه صنعتی بیرجند، بیرجند، ایران

² استادیار، دانشکده مهندسی مکانیک و مواد، دانشگاه صنعتی بیرجند، بیرجند، ایران

³ دانشیار، دانشکده مهندسی مکانیک و مواد، دانشگاه صنعتی بیرجند، بیرجند، ایران

10.22034/stme.2025.540373.1157

چکیده

در این پژوهش با استفاده از پیش مادههای پودری تیتانیوم (Ti)، کاربید بور (B₄C) و اکسید‌گرافن احیاشده (RGO)، بر روی آلیاژ فولاد زنگ‌نزن L316 و به روش لیزر، پوشش مقاوم در برابر خوردگی و سایش ایجاد و خواص برهم‌کنش سطح آن بررسی شده است. در این خصوص، با استفاده از اکسیدگرافن احیاشده با درصدهای 5/0، 1 و 3 قرص‌های اولیه ساخته شد. نتایج نشان داد، پوشش‌دهی سطح آلیاژ فولاد L316 با مخلوط پودری Ti+B4C+1%RGO می‌تواند تا 21 برابر نسبت به زیرلایه فولاد L316، مقدار مقاومت به خوردگی و تا 2 برابر اندازه سختی سطح آلیاژ را افزایش دهد. تصویرهای میکروسکوپی الکترونی روبشی نشر میدانی (FE-SEM) نشان داد نانوصفحات اکسیدگرافن احیاشده به‌صورت مؤثری بر روی سطح پراکنده‌شده و فاز کاربید تیتانیوم TiC پس از فرایند لیزر بر روی سطح تشکیل شده است. قرارگیری پوشش حاوی نانوصفحات اکسیدگرافن احیاشده در زمینه تیتانیوم با ضخامت بین μm545/2 - 37/2 بر روی سطح فولاد L316، از مهم‌ترین دلایل افزایش خواص سطحی این آلیاژ معرفی شده است. نتایج این پژوهش می‌تواند گستره‌ی استفاده از فولاد L316 را در کاربردهای مقاومت به خوردگی و سختی ارتقاء دهد.

کلیدواژه‌ها

اکسید‌گرافن احیاشده

تیتانیوم

کاربید بور

پوشش

خوردگی

لیزر

موضوعات

ساخت و تولید

عنوان مقاله English

Corrosion Resistance and Hardness Enhancement of 316L Stainless Steel Using Laser-Deposited Reduced Graphene Oxide/Boron Carbide/Titanium Carbide Composite Coating

نویسندگان English

Mohammad Roghani ¹

Mohammad Khosravi ²

Yadollah Yaghoubinezhad ³

¹ M.Sc, Department of Mechanical Engineering, Birjand University of Technology, Birjand, Iran

² Assistant professor, Department of Mechanical Engineering, Birjand University of Technology, Birjand, Iran

³ Associate professor, Department of Mechanical Engineering, Birjand University of Technology, Birjand, Iran

چکیده English

In this study, a composite coating based on titanium (Ti), boron carbide (B₄C), and reduced graphene oxide (RGO) was applied on AISI 316L stainless steel substrate using laser cladding. Coatings with varying RGO content (0.5, 1, and 3 wt.%) were prepared and the surface properties, including corrosion resistance and hardness, were systematically evaluated. The results demonstrated that the Ti + B₄C + 1 wt.% RGO coating exhibited optimal performance, increasing corrosion resistance by a factor of 21 and surface hardness by a factor of 2.15 compared to the uncoated 316L substrate. Field-emission scanning electron microscopy (FE-SEM) revealed uniform dispersion of RGO nanosheets across the surface along with in-situ formation of titanium carbide (TiC) phases. The coating thickness ranged from 37.2 to 545.2 µm. The primary phases identified were TiC, TiB₂, and RGO. These findings highlight the potential of this hybrid coating to extend the application range of 316L stainless steel in corrosive and high-wear environments.

کلیدواژه‌ها English

Reduced Ggraphene Oxide

Titanium

Boron Carbide

Laser Cladding

Corrosion Resistance

316L Stainless Steel

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