Pembentukan Lapisan Diamond Like Carbon Pada Aluminium T2025 Serta Uji Keras, Aus dan Korosi

Riyadi, Sugeng and -, Tri Widodo Besar Riyadi, ST, M.Sc, Ph.D (2017) Pembentukan Lapisan Diamond Like Carbon Pada Aluminium T2025 Serta Uji Keras, Aus dan Korosi. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

The purpose of this study was to determine the processing parameters including time, pressure and temperature to obtain optimum hardness, wear resistance and corrosion resistance in the plasma vapour deposition of Aluminium T2025 material. The materials which have already experienced nitriding were compared to those that have not been nitridized. The material used in the present study was T2025 Aluminum with two shapes, one was a square shape with a length of 20 mm, a width of 10 mm, and the other one was a circular shape with a diameter of 14 mm. Plasma vapour deposition process was performed using an incandescent discharge machines Plasma vapour deposition DC with CH4 gas flow. Plasma vapour deposition process was done by varying period of 2, 3, 4, and 5 hours, the pressures of 1.0, 1.2, 1.4, and 1.6 mbar, and the temperature of 150, 175, 200, and 225 oC. The coating hardness testing was conducted using the tool Vickers micro hardness tester, the wear test was conducted using a universal Oghosi wear testing a machine (type Oat-U), and the corrosion test was conducted using methods Elekktrokimia with water media. The test results showed that the materials that have not yet been plasma vapour deposition produced a hardness of 36.07 VHN. The optimum plasma vapour deposition parameters showed the pressure of 1.2 mbar, a temperature of 175 ° C, and a time of 4 hours which could produce a hardness of 58.45 VHN. The wear test showed that before plasma vapour deposition the wear was 0.00000924 mm2 / kg whereas after nitriding with pressure of 1.2 mbar, a temperature of 175 ° C, and a time of 4 hours, was 0.00000202 mm2 / kg. The corrosion test after plasma vapour deposition in pressure of 1.2 mbar, a temperature of 175 ° C, and 2 hours decreased compared to other materials and achieved the lowest wear density by 2.39 uA / cm2 with a corrosion rate of 1.49 mpy.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	Aluminium T2025, Plasma vapour deposition, Kekerasan, Keausan, dan Korosi.
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	SUGENG RIYADI
Date Deposited:	07 Nov 2017 12:37
Last Modified:	16 Jul 2018 06:13
URI:	http://eprints.ums.ac.id/id/eprint/57127

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