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Analisis Lapisan Aluminium Pada Permukaan Baja Dengan Metode Twin-Wire Arc Spray Terhadap Laju Korosi Fahrezi, Wibi Adrian; ., Nurhadi; Hastuti, Sri; Pramono, Catur; Nurdin, Akhmad; Wibowo, Rheza Ari; Al Hassany, Ibnu Rosyid; Pandupradityo, Bramono
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.19691

Abstract

Electrical twin-wire arc spray is often used as protection from material components. The coating process aims to protect the coating from environmental disturbances. The quality of the coating yield is indicated by corrosion resistance. The spraying distance in the thermal spray process will affect the corrosion rate, morphological structure, and thickness. The purpose of this study is to analyze the effect of distance variations in the electrical twin-wire arc spray process with an aluminum coating on corrosion rate, morphological structure, and layer thickness in AISI 1020 steel. Tests are carried out for corrosion tests, scanning electron microscope (SEM), and layer thickness. The implementation of the study used experimental methods using distance variations of 150 mm, 250 mm, and 350 mm. The results of the study of the lowest corrosion rate value at a distance of 150 mm are included in the good category with a value of 0.13667 mmpy, the morphological structure of the layer using a closer distance obtains a smooth and dense layer, then for the highest layer thickness at a distance of 150 mm with an average of 317.16 μm. 
Pengaruh Waktu Penyemprotan Thermal Arc Spray Aluminium Terhadap Daya Lekat Lapisan Coating Hastuti, Sri; Hadi, Isro Nurul; Pramono, Catur; Pandupradityo, Bramono; Larasanto
Virtual of Mechanical Engineering Article Vol 9 No 2 (2024): V-MAC
Publisher : Prodi Teknik Mesin Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/v-mac.v9i2.3378

Abstract

Thermal spray aluminum (TSA) is a coating method used to resist corrosion, abrasion and deformation. TSA coating applications must have a minimum thickness of 80-100 µm, while for applications at temperatures of 600 – 9500 C the minimum thickness is 200 – 250 µm. The TSA layer in a position submerged in sea water will decrease by around 20 µm every year. The aim of this research is to examine variations in spraying time of 5, 10 and 15 seconds on the adhesion of the TSA coating layer. The substrate material used is AISI 1020 steel, using the #60 sandpaper hand tool surface preparation method. The preparation results were tested for cleanliness of the test samples referring to surface cleanliness ISO 5801. Surface roughness testing in this study produced a roughness of 1.852 µm. The results of the DFT test show that the longer the spraying process increases the layer thickness. The results of the pull off test show that optimal bonding results occur at a variation of 10 seconds with a strength of 8.16 MPa. In the bending test results variations of 5 and 10 seconds did not show any cracks, while in the 15 second variation there were small cracks, but based on standard practice item No. 21100 bending test no cracks and small cracks are still allowed. Keyword: thermal spray aluminium, surface preparation, DFT, pull off adhesive, bending