بررسی اثرغلاف نخود فرنگی به عنوان بازدارنده سبز بر خوردگی شیرین فولاد کم کربن

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه مهندسی مواد، دانشکده مهندسی مکانیک، دانشگاه تبریز، تبریز، ایران، کدپستی: 5166616471

10.30509/jcst.2025.167445.1250

چکیده

خوردگی شیرین نوعی از خوردگی در صنعت نفت است که در آن گاز CO2 با آب واکنش داده و کربنیک اسید ایجاد شده و باعث خوردگی در فولاد می‌شود. یکی از روش‌های مقابله با خوردگی استفاده از بازدارنده خوردگی است. در این پژوهش، اثربازدارنده طبیعی عصاره غلاف نخود فرنگی به عنوان بازدارنده خوردگی جدید برای فولاد کم کربن مورد استفاده در صنایع گاز (API 5L X42) در محلول 3.5 درصد وزنی NaCl اشباع‌ شده با CO2 در غلظت‌های مختلف مورد بررسی قرار گرفت. روش‌های الکتروشیمیایی از قبیل آزمون قطبش و طیف‌سنجی امپدانس الکتروشیمیایی مورد استفاده قرار گرفت. نتایج نشان داد که حداقل زبری سطح در عصاره با غلظت ppm 100 ، 20.607 نانومتر بوده وهمچنین بهترین اثربخشی عصاره با درصد 69.76=  IE در غلظت ppm 100 در مقایسه با سایر غلظت‌ها است و نتایج حاصل از SEM و XRD نشان‌دهنده تشکیل یک لایه محافظ روی سطح نمونه‌ها است و عملکرد عصاره به صورت یک بازدارنده مختلط است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigating the Effect of Pea Pods as a Green Inhibitor on Sweet Corrosion of Low Carbon Steel

نویسندگان [English]

  • ashkan kargozari
  • Shahin Khameneh Asl
Department of Materials Engineering, Faculty of Mechanical Engineering, Tabriz University, P.O. Code: 5166616471, Tabriz, Iran
چکیده [English]

Sweet corrosion is a type of corrosion in the oil industry in which CO2 gas reacts with water to form carbonic acid, which causes corrosion in steel. One of the methods of combating corrosion is the use of corrosion inhibitors. This study investigated the natural inhibitory effect of pea pod extract as a new corrosion inhibitor for low carbon steel used in the gas industry (API 5L X42) in a 3.5 wt. % NaCl solution saturated with CO2 at different concentrations. Electrochemical methods such as polarization tests and electrochemical impedance spectroscopy were used. The results showed that the minimum surface roughness in the extract at a concentration of 100 ppm was 607.20 nm and also the best effectiveness of the extract with a percentage of IE=69.76 at a concentration of 100 ppm compared to other concentrations. The results obtained from SEM and XRD indicate the formation of a protective layer on the samples' surface and the extract's function as a mixed inhibitor.

کلیدواژه‌ها [English]

  • Green corrosion inhibitors
  • Sweet corrosion
  • Electrochemical properties
  • Electrochemical impedance spectroscopy
  • Polarization

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