The Effect of Electric Current and Time of Anodizing Process on Physical and Mechanical Properties of Aluminum Series 1xxx
Muhammad Budi Nur Rahman(a*), Aris Widyo Nugroho(a)

a) Mechanical Engineering Department, Engineering Faculty, Universitas Muhammadiyah Yogyakarta.
Jl. Brawijaya, Tamantirto, Kasihan, Bantul, Yogyakarta, Indonesia
nurrahman_umy[at]yahoo.co.id

Abstract

Anodizing is the process of forming a layer of aluminum oxide (alumina) which can increase hardness, wear resistance and corrosion resistance. The anodizing process is carried out on aluminum 1xxx series with a concentration of 40% solution, electric voltage 18 V, temperature 40oC to 55oC for 5, 10 and 15 minutes and current 1, 2, and 3 A. The dyeing process is applied using a solution with a concentration of 20 g / liter. The results of the anodizing process with a duration of 10 minutes immersion produce the largest thickness of the alumina layer at a current of 2 A as thick as 0.120 mm, hardness 52.1 VHN. The greater the current used, the larger the pores formed as a result of the color on the surface getting thicker. At the current 1 A the most uniform color brightness is R 35.66%, G 181.33%, B 63%. The results of the anodizing process at 3 A currents show that the longer the dyeing time will increase the thickness of the alumina layer where the thickness of the layer is 0.060 mm for a period of 15 minutes, But will reduce the hardness value, shrink the surface pores. The hardness value is 68.16 VHN for a 5 minutes processing time to 56.07 VHN for a process time of 15 minutes. Reduction of pores produces uniform brightness with a percentage of R 27.33%, G 57.00%, B 19.33%.

Keywords: Anodizing, Aluminum 1xxx, current, time, hardness, color brightness

Topic: International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract-plain/b6NQHMxfJ27Y

Web Format | Corresponding Author (Muhammad Budi Nur Rahman)