Temperature Effects on Stainless Steel 316L Corrosion in the Environment of Sulphuric Acid (H2SO4)

• Published in: IOP conference series. Materials Science and Engineering Vol. 343; no. 1; pp. 12016 - 12022
• Main Authors: Ayu Arwati, I.G., Majlan, Edy Herianto, Wan Daud, Wan Ramli, Shyuan, Loh Kee, Binti Arifin, Khuzaimah, Husaini, Teuku, Alfa, Sagir, Ashidiq, Fakhruddien
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.03.2018
• Subjects: Corrosion; Corrosion effects; Corrosion rate; Erosion rates; Metal surfaces; Morphology; Stainless steel; Stainless steels; Sulfuric acid; Temperature effects; Weight loss
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/343/1/012016

In its application, metal is always in contact with its environment whether air, vapor, water, and other chemicals. During contact, chemical interactions emerge between metals and their respective environments such that the metal surface corrodes. This study aims to determine the corrosion rate of 316L stainless steel sulphuric acid environment (H2SO4) with weight loss and electrochemical methods. The corrosion rate (CR) is value of 316L stainless steel by weight loss method with sulfuric acid (H2SO4) with concentration of 0.5 M. The result obtained in conjunction with the increase of temperature the rate of erosion obtained appears to be larger, with a consecutive 3 hour the temperature of 50°C is 0.27 mg/cm2h, temperature 70°C 0.38 mg/cm2h, and temperature 90 °C 0.52 mg/cm2h. With the electrochemical method, the current value increases by using a C350 potentiostal tool. The higher the current, the longer the time the corrosion rate increases, where the current is at 90 °C with a 10-minute treatment time of 0.0014736 A. The 316L stainless steel in surface metal morphology is shown by using a Scanning Electron Microscope (SEM).