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Corrosion protection and chacracteristics of ni ceo2 cuo electroplating layer on steel substrate

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The particles of CeO2 and CuO are capable of catalyzing the oxidation reaction of carbon monoxide and hydrocarbons at low temperature, especially at nanometer size. They can b deposited on the metal material surface by using electroplating method. This paper reports some results on corrosion resistance, wear resistance, adhesion strength and catalytic behavior of NiCeO2-CuO composite by electroplating on steel substrate from nickel sulfate solution using CeO2 and CuO particles with 40÷60 nm size. | Vietnam Journal of Science and Technology 55 (5B) (2017) 181-186 CORROSION PROTECTION AND CHACRACTERISTICS OF Ni-CeO2-CuO ELECTROPLATING LAYER ON STEEL SUBSTRATE Mai Van Phuoc*, Nguyen Duc Hung Institute of Chemistry and Materials, 17 Hoang Sam, Nghia Do Ward, Cau Giay District, Ha Noi, Vietnam * Email: maivanphuoc_bk@yahoo.com Received: 11 August 2017; Accepted for publication: 7 October 2017 ABSTRACT The particles of CeO2 and CuO are capable of catalyzing the oxidation reaction of carbon monoxide and hydrocarbons at low temperature, especially at nanometer size. They can be deposited on the metal material surface by using electroplating method. This paper reports some results on corrosion resistance, wear resistance, adhesion strength and catalytic behavior of NiCeO2-CuO composite by electroplating on steel substrate from nickel sulfate solution using CeO2 and CuO particles with 40÷60 nm size. Keywords: Ni-composite electroplating, Ni-CeO2, Ni-CuO, Ni-CeO2-CuO catalytic material, CO and C3H6 conversion. 1. INTRODUCTION Composite electroplating is formed by the co-precipitation of very small particles of one or more substances with a metal forming a coating [1]. Composite electroplating technology is now able to produce coatings that combine the properties of plated metal and doped particles [1, 2]. As a result, composite electroplating improves certainly properties of single metal coatings such as increased hardness, better abrasion resistance and/or chemical catalysts, etc. [3 - 4]. The composite of Ni-CeO2-CuO by electroplating is formed in a solution of nickel sulfate with dispersed nanoparticles of CeO2 and CuO, improving some nickel plating properties such as: increased corrosion resistance, hardness and abrasion. In addition, Ni-CeO2-CuO composite electroplating also can catalyze the conversion process of CO and CxHy with high efficiency. 2. EXPERIMENTAL AND METHODS 2.1. Materials CeO2 was provided by the Richest Group Ltd. (Shanghai, China) and CuO .