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primary topic: Effects of DBDS and DBPC antioxidants on the corrosion of copper strips immersed in transformer oil

Effects of DBDS and DBPC antioxidants on the corrosion of copper strips immersed in transformer oil
type: AcademicArticle
type: Article
abstract: This paper presents the experimental findings on the effects of antioxidants on the corrosion of copper strips immersed in mineral oil (MO)–antioxidant samples. First, the uninhibited MO was mixed thoroughly with dibenzyl disulphide (DBDS) or 2,6-di-tert-butyl-p-cresol (DBPC) at different concentrations (5, 15, 25, 50, and 200 mg/kg) using a hot plate magnetic stirrer set at a temperature of 73 °C and stirring speed of 750 rpm for 15 min. Following this, the MO–antioxidant samples were poured into separate test vessels and copper strips were added into the vessels. Next, each MO– antioxidant sample was blanketed with nitrogen gas, sealed, and placed in a forced convection laboratory oven. The MO–antioxidant samples were then thermally aged at 150 °C for 48 h. The results showed that the acidity of the MO–antioxidant sample decreased with an increase in the antioxidant concentration, regardless whether the antioxidant was DBDS or DBPC. However, the corrosion of the copper strip worsened with an increase in the antioxidant concentration, where DBDS had a higher relative degree of corrositivity to copper compared with DBPC. In addition, the results showed that a DBPC concentration of 25 mg/kg reduced the the acidity of the MO– antioxidant sample and resulted in a moderate tarnish of the copper strip. © 2024, Institute of Advanced Engineering and Science. All rights reserved.
date: 2024
volume: 13
issue: 5
is part of: Bulletin of Electrical Engineering and Informatics
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Institute of Advanced Engineering and Science
type: Organization

Bulletin of Electrical Engineering and Informatics
type: Collection
issn: 20893191

Mohd Shahril Ahmad Khiar
type: Person
given name: Mohd Shahril Ahmad
family name: Khiar

Mohamad Nazri Mohamad Din
type: Person
given name: Mohamad Nazri Mohamad
family name: Din

Sharin Ab Ghani
type: Person
given name: Sharin Ab
family name: Ghani

Muhammad Syahrani Johal
type: Person
given name: Muhammad Syahrani
family name: Johal

Imran Sutan Chairul
type: Person
given name: Imran Sutan
family name: Chairul

Norazhar Abu Bakar
type: Person
given name: Norazhar Abu
family name: Bakar

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primary topic: Effects of DBDS and DBPC antioxidants on the corrosion of copper strips immersed in transformer oil