نوع مقاله : مقاله کامل پژوهشی

نویسندگان

1 مرکز تحقیقات مواد پیشرفته، دانشکده مهندسی مواد، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران

2 دانشکده فنی و مهندسی، دانشگاه شهرکرد، شهرکرد، ایران

چکیده

در این پژوهش، مقاومت به خوردگی لایه­ های نانوبلوری نیکل ایجاد شده به روش عملیات مکانیکی تدریجی سطحی(SMAT) در محلول 10% هیدروکسید سدیم مورد بررسی قرار گرفت. برای مشخصه ­یابی لایه­ های نانوبلوری نیکل ایجاد شده از آزمون­ های پراش پرتو  X (XRD)، میکروسکوپی الکترونی روبشی گسیل میدانی(FE-SEM)، میکروسکوپی نوری و آزمون زبری­ سنجی استفاده شد.. الگوهای XRD نشان دادند با گذشت زمان از شدت قله ­ها کاسته و قله­ ها پهن­ تر شدند اما بعد از 60 دقیقه شدت افزایش یافت. لایه­ های نانوبلوری نیکل ایجاد شده به روش SMAT، در همه زمان ­ها مقاومت به خوردگی بیشتری نسبت به نمونه بالک داشتند.

کلیدواژه‌ها

عنوان مقاله [English]

Investigation on Corrosion Behavior of Nickel Nanocrystalline layers Induced by Surface Mechanical Attrition Treatment (SMAT) in Alkaline Solutions

نویسندگان [English]

  • Nima Zaghian 1
  • Behrooz Shayegh Boroujeny 2

1 Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

2 Department of Material Engineering, Shahrekord University, Shahrekord, Iran.

چکیده [English]

In this study, the corrosion resistance of Nickel nanocrystalline layers induced by Surface Mechanical Attrition Treatment (SMAT) in 10% NaOH was investigated. Nickel nanocrystalline layers were studied by X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Optical Microscopy and roughness test. XRD patterns showed that the peaks intensities were found to decrease due to peak broadening by increasing the treatment time. However, after 60 min, the intensity of the peaks was increased. Nickel nanocrystalline layers induced by SMAT showed better corrosion resistance than that of bulk Ni in all treatment times.

کلیدواژه‌ها [English]

  • Nickel Nanocrystalline Layers
  • Alkaline Solution
  • Corrosion
  • SMAT
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