Metalworking fluids (MWFs) have been addressed in several works published in CIRP Annals - Manufacturing Technology in the past played a significant role in manufacturing processes such as cutting, forming, rolling, and grinding, as well as equal-channel angular pressing [1-3]. They influence heat generation in metalworking processes by reducing friction between workpiece and tool. Cooling is furthermore achieved by dissipating and conducting the generated heat by their lubricating and cooling properties to avoid thermal damage of the workpiece material as well as reduce wear of the tool. Therefore, MWFs should be applied to ensure workpiece quality, to reduce tool wear, and to improve process productivity and corrosion resistance. | Vietnam Journal of Science and Technology 55 (5B) (2017) 236-245 AN INVESTIGATION OF AGANOERION POLYMORPHUM LEAF EXTRACT AS A COPPER WORKING FLUIDS’ ADDITIVE L. T. Dai1, 4, H. T. Anh2, M. Vaka3, D. T. Ngan4, N. D. Nam4, * 1 Department of Naval Architecture and Ocean Engineering, Pusan National University, Busan 609-735, Republic of Korea 2 Thu Dau Mot University, 6 Tran Van On Street, Phu Hoa Ward, Thu Dau Mot City, Binh Duong Province, Viet Nam 3 School of Life and Environmental Sciences, Deakin University, Victoria 3220, Australia 4 Petrovietnam University, 762 Cach Mang Thang Tam Street, Ba Ria City, Ba Ria - Vung Tau Province, Viet Nam * Email: namnd@ Received: 11 August 2017; Accepted for publication: 9 October 2017 ABSTRACT This work presents the Aganonerion Polymorphum leaf extract as an additive for metals working fluids (MWF). The results indicated that the Aganonerion Polymorphum leaf extract additive shows high corrosion resistance and very small changes of the MWF composition as well as its properties. These benefits are attributed to the forming protective inhibiting deposits on the copper surface that control the electrochemical corrosion reactions. In addition, the study also compared the Aganonerion Polymorphum leaf extract with a commercial inhibitor, imidazolines, in investigated solution at the same experimental conditions. Keywords: metalworking fluids, corrosion, corrosion inhibitors, Aganonerion Polymorphum leaf extract, imidazolines. 1. INTRODUCTION Metalworking fluids (MWFs) have been addressed in several works published in CIRP Annals - Manufacturing Technology in the past played a significant role in manufacturing processes such as cutting, forming, rolling, and grinding, as well as equal-channel angular pressing [1-3]. They influence heat generation in metalworking processes by reducing friction between workpiece and tool. Cooling is furthermore achieved by dissipating and conducting the generated heat by their .
