Research Papers Session
 
17 August, Wednesday - Perak Room - 10:45am - 12:30pm

Chair : Dr. Azzura Ismail, Universiti Tun Hussein Onn Malaysia (UTHM)

Benzamidoleucine as environmentally benign corrosion inhibitor for N80 steel in NaCl solution saturated with CO2: Electrochemical and SECM studies

17 August, Wednesday - Perak Room - 10:50am - 11:20am

Bio of Speaker

Abstract

One of the serious problems of oil extracting industry is corrosion. The successful application of carbon steels in oil and gas pipelines and production tubular in Carbon Dioxide (CO2) containing 3.5 wt% NaCl environment depends mainly on the use of corrosion inhibitors. So, the present paper deals with the corrosion inhibition of N80 steel by environmentally benign benzamidoleucine (BL), which is an amino acid compound in 3.5 wt% NaCl solution saturated with CO2 by using electrochemical impedance spectroscopy (EIS), Tafel polarization and Scanning Electrochemical Microscopy (SECM) techniques. The inhibition efficiency at optimum concentration (200 mg/L) is 93%. SECM micrograph reveals the protective of BL.

Effect Of Seawater Composition And Environmental Parameters On Electrochemical Properties Of Sacrificial Anode Cathodic Protection

17 August, Wednesday - Perak Room - 11:25am - 11:55am

Bio of Speaker

Abstract

Name:  Nurhafizi bin Zakaria
Title / Position:  Marine Engineer
Company:  RMN Officer Training Centre

Mr. Nurhafizi bin Zakaria joined Royal Malaysian Navy since 2006 and USM Engineering campus for master study in 2015. He completed his undergraduate degree in Mechanical Technology Marine Engineering from UTM, Johor in 2006. He has about 10 years experience in RMN directly in his field on Marine Engineering. He is actively working on the RMN Officer Training Centre since 2014 until now.
Corrosion is a very serious problem and has caused a structural failure of many objects or construction industry, especially marine. Cathodic protection is one of the approaches that are commonly used to protect the ship from corrosion problems. The study was conducted to discuss the electrochemical corrosion behavior and the role of zinc as anode carbon anode in cathodic protection.

Benzalkonium Chloride as Internal Corrosion Protection of Carbon Steel API 5L in Acetic Acid

17 August, Wednesday - Perak Room - 12:00pm - 12:30pm

Bio of Speaker

Abstract

Name: Mohd Nazri Idris
Title / Position:  Research Officer
Company:  Universiti Sains Malaysia
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Mohd Nazri Idris is Research Officer at School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia (USM). He joints with USM and involves in teaching materials engineering subjects since 2000. He also competences with several consultation project with industries especially in mechanical material testing and characterization analyses involving X-Ray and its related techniques. His research interest focuses on corrosion and metallurgy, activated carbon and glass-ceramic. He also leads and contributes the expertise in several research grants from university and government agency. His research also contributes to several journal and proceeding at local and international level. He received a B.Eng. (Materials Engineering) in 1999 and M.Sc. (Materials Engineering) in 2011 from USM and completed his PhD in Materials science from Universiti Kebangsaan Malaysia in 2016. 
The performance of benzalkonium chloride (BKC) as corrosion inhibitor for carbon steel API 5L in 1 M acetic acid has been investigated by potentiodynamic polarization method, electrochemical impedans spectroscopy (EIS) and field emission scanning electron microscope (FESEM). The objective of this study is to identify the inhibition efficiency of BKC by varies the concentration and temperature. In order to investigate the BKC performance, further study on thermodynamic and adsorption mechanism has been implied. Potentiodynamic polarization study revealed that the corrosion rate of carbon steel decreased with the increasing of BKC concentration and the achievement of inhibition efficiency reached up to 92%. Meanwhile, this performance is inversely proportional with the increasing of temperature. Analysis of activation parameters indicated that dissolution process of carbon steel can be restrained by formation of BKC thin film on the carbon steel surface through an adsorption process. The adsorption process of BKC molecules are seen to follow Langmuir adsorption isotherm and the mechanism of adsorption occurred by physisorption and chemisorption processes. The performance of BKC was also supported by EIS and morphology analysis on the carbon steel surface. Present study discovered that BKC has showed good inhibition properties to protect the internal corrosion of carbon steel API 5L in acetic acid medium.