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All Journal Jurnal Elemen Majamecha
Darmo, Adityo Noor Setyo Hadi
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Mechanical Engineering

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Journal : Jurnal Elemen

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ANALISIS TEKANAN UDARA PADA PROSES THERMAL SPRAY ALUMINIUM TERHADAP KEKUATAN ADHESI DAN KETEBALAN LAPISAN COATING PADA BAJA AISI 1020 Fillah, Moh. Yusron; Hastuti, Sri; Nurhadi; Darmo, Adityo Noor Setyo Hadi
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.284

Abstract

The thermal spray aluminum (TSA) coating method is used to prevent damage to the metal surface and improve the quality of the metal surface by bonding the coating. The coating standard has a minimum thickness of 80-100 µm. According to AWS C2.23M/C2.23, NACE N0.12, SSPC CS-23, coatings submerged in seawater will experience a decrease in coating thickness of 20 µm. This study aims to examine the effect of air pressure in the thermal spray coating process on AISI 1020 steel on the bond strength of the coating to the base metal. The research was conducted using air pressure variations of 3 Bar, 3.5 Bar, and 4 Bar. Furthermore, dry film thickness, pull off adhesive, and bending tests were conducted. The dry film thickness test results show that the higher the air pressure, the coating thickness increases. The results of the pull off adhesive test show that the higher the air pressure the bonding strength of the coating also increases. The bending test results show results that are in accordance with standard practice item No.21100 where there are no cracks and small cracks are still allowed.
PENGARUH JENIS PEWARNA PADA PROSES ANODIZING ALUMINIUM T6 6061 TERHADAP HASIL PELAPISAN Hidayat, syarif; Darmo, Adityo Noor Setyo Hadi; Iswahyudi, Sigit
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.321

Abstract

This study examines anodizing on aluminum 6061 using chemical dyes (printer ink and clothing dye) and a natural dye (turmeric) at concentrations of 5%, 10%, and 15% w/v. The anodizing process was conducted at 12 volts, 2.5 amps, for 30 minutes. The research aims to evaluate the effects of dye type and concentration on color brightness, oxide layer thickness, and wear rate. Results indicate that dye concentration influences brightness, with the best outcome at 10% w/v printer ink (brightness level 5.4). Oxide layer thickness was unaffected by the type or concentration of dye used. Wear testing revealed that dyeing did not significantly affect wear resistance, with the highest specific wear rate on untreated material (11.01 x 10⁻⁴ mm³/kg.m) and the lowest on 10% w/v printer ink (7.63 x 10⁻⁴ mm³/kg.m). Overall, the findings suggest a limited impact of dye on the anodized aluminum's wear properties.
Co-Authors Cristara, Shadam Nanda Fillah, Moh. Yusron Listyanda, R. Faiz M. Yogi Riyantama Isjoni Mulyaningsih , Nani NURHADI Sigit Iswahyudi Suharto, Rizky Dedy Syarif Hidayat Windriawan, Taufik Tegar