مهندسی گاز ایران

توزیع میکرو/نانوذرات ZrO2 بر روی فولاد ST37 به کمک فرآیند اصطکاک اغتشاشی و بررسی تأثیر آن بر ارتقاء خواص فولاد در برابر خوردگی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی مکانیک، دانشگاه صنعت نفت، آبادان، ایران

2 شرکت گاز استان هرمزگان، صندوق پستی: 7915996489، بندرعباس، ایران

3 استادیار، گروه مهندسی شیمی، دانشکده مهندسی شیمی و نفت، دانشگاه هرمزگان، بندرعباس، ایران

چکیده

 این مقاله با انجام فرآیند اصطکاک اغتشاشی در حالت‌های مختلف بر روی فولاد St37 به بررسی تغییر خواص آن در برابر خوردگی پرداخته است. فرآیند اصطکاک اغتشاشی در ۴ حالت روی فولاد St37 انجام شد. حالت اول فرآیند با سرعت دورانی ۹۰۰rpm و بدون میکرو/نانو ذره، حالت دوم در سرعت دورانی ۵۶۰rpm و با میکرو ذره ZrO2، حالت سوم با سرعت دورانی ۵۶۰rpm و با نانو ذره ZrO2 و حالت چهارم با سرعت دورانی 900 rpm و با نانو ذره ZrO2 صورت پذیرفت. سرعت خطی در کلیه نمونه‌ها ۱۰۰mm/min بود. مقاومت در برابر خوردگی هر ۴ حالت با مقاومت در برابر خوردگی فولاد ST37 که هیچ فرآیندی بر روی آن انجام نشده بود (نمونه خام)؛ مقایسه گردید. نتایج نشان دادند که نمونه تولید شده با فرآیند اصطکاک اغتشاشی همراه با نانو ذره ZrO2 و سرعت دورانی 900 rpm بیش‌ترین افزایش مقاومت در برابر خوردگی را دارد. نمونه‌های حاوی نانو ذره در هر دو سرعت دورانی ۵۶۰rpm و ۹۰۰rpm نسبت به نمونه‌ی خام، مقاومت در برابر خوردگی بیش‌تری داشتند. در نمونه‌ای که روی آن فرآیند به‌تنهایی و بدون حضور میکرو/نانو ذرات انجام شده بود و همچنین نمونه‌ای که از میکرو ذرات استفاده نموده بود؛ مقاومت در برابر خوردگی نسبت به فلز پایه کاهش یافت. افزایش سرعت دورانی فرآیند منجر به افزایش مقاومت در برابر خوردگی نمونه گردید.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Nano/Micro ZrO2 Particles Dispersion on St37 Steel by Using Friction Stir Processing and Investigating Its Effect on Steel Corrosion Resistance Promotion

نویسندگان [English]

  • Seyed Mohammad Hossein Sharifi 1
  • Armin Sabetghadam-Isfahani 2
  • Yegane Davoodbeygi 3

1 Mechanical Engineering Department, Petroleum University of Technology, Abadan, Iran

2 Hormozgan Province Gas Company, Bandar Abbas, Iran

3 Assistant Professor, Department of Chemical Engineering, Chemical and Petroleum Engineering Faculty,University of Hormozgan, Bandar Abbas, Iran

چکیده [English]

In this paper, the effect of Friction Stir Processing (FSP) on the enhancement of St37 properties against corrosion has been investigated. The FSP was carried out in 4 modes on St37: The first state of the process was done with a rotational speed of 900 rpm and without micro/Nano particles, the second state was done at a rotational speed of 560 rpm and with ZrO2 micro particles, the third state was done with a rotational speed of 560 rpm and with ZrO2 nanoparticles and the fourth state was done with a rotational speed of 900 rpm and with ZrO2 nanoparticles. The traverse speed in all samples was 100 mm/min. Corrosion resistance of all 4 prepared samples was compared with the one in St37 steel Base Metal (which FSP had not been done on it). The results showed that the sample produced by FSP with ZrO2 nanoparticles and rotational speed of 900 rpm has the highest increase in corrosion resistance. All Nano dispersed samples showed more corrosion resistance than the Base Metal. The two samples, the FSPed one without any particle and the FSPed one with micro particles, showed less corrosion resistance in comparison to the one in Base Metal. Increasing the rotational speed of the process led to an increase in the corrosion resistance of the sample.

کلیدواژه‌ها [English]

  • Friction stir processing
  • St 37
  • Corrosion Resistance
  • ZrO2 nanoparticle
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مهندسی گاز ایران
دوره 10، شماره 1 - شماره پیاپی 17
مرداد 1402
صفحه 59-68
  • تاریخ دریافت: 11 اردیبهشت 1402
  • تاریخ بازنگری: 13 خرداد 1402
  • تاریخ پذیرش: 30 تیر 1402