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

International Conference and Exhibition in Advanced Materials and Microscopy 2017

材料科学;物理学

Ayu Arwati, I.G.^1,2 ; Majlan, Edy Herianto^1 ; Wan Daud, Wan Ramli^1 ; Shyuan, Loh Kee^1 ; Binti Arifin, Khuzaimah^1 ; Husaini, Teuku^1 ; Alfa, Sagir^2 ; Ashidiq, Fakhruddien^2

Fuel Cell Institute, National University of Malaysia, UKM Bangi, Selangor Darul Ehsan

43600, Malaysia^1

Mechanical Engineering Program, Engineering Faculty, Mercubuana

1160, Indonesia^2

关键词: 316 L stainless steel;    Acid environment;    Chemical interactions;    Current values;    ELectrochemical methods;    ITS applications;    Stainless steel 316L;    Weight loss method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/343/1/012016/pdf
DOI  :  10.1088/1757-899X/343/1/012016

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

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).