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All Journal Rotasi Jurnal Teknik Transmisi JUPITER (Jurnal Pendidikan Teknik Elektro) Jurnal Taman Vokasi at-tamkin: Jurnal Pengabdian kepada Masyarakat STEAM Engineering : Journal of Science, Technology, Education And Mechanical Engineering G-Tech : Jurnal Teknologi Terapan Jurnal Pendidikan Teknik Mesin Undiksha JURNAL FLYWHEEL Jurnal Abdi Masyarakat Saburai (JAMS) Indonesian Community Journal Journal of Mechanical and Electrical Technology Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan
Yayi Febdia Pradani
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Journal : Jurnal Teknik

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Enhancing Heat Treatment Learning for Mechanical Engineering Students: A Comparative Study of Corrosion Inhibitor Effectiveness on Aluminium Protection Saifuddin Karim; Pradani, Yayi Febdia; Pratomo, Danang Yugo; Muhtarom, Imam; Widowati, Tamara Rahma; Wahyudi, Dian Julianto; Wulandari, Amelia Dini; Subekhi, Prido
Jurnal Teknik Vol 23 No 2 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i2.650

Abstract

Corrosion still remains a serious problem in the application of aluminum alloys, such as Aluminum 6061, which is one of the most widely used aluminum alloys in industries because of its high strength-to-weight ratio. However, the material degrades when exposed to aggressive environments, such as acidic, alkaline, or salty solutions, and the control of corrosion has been achieved with the use of synthetic chemical inhibitors, but the increasing concern of environmental and health risks has shifted attention to more eco-friendly alternatives. The present study aimed at evaluating the efficacy of three vegetable oils (coconut oil, palm oil, and soybean oil) as environmentally friendly corrosion inhibitors for Aluminum 6061, and the alloy coupons were subjected to three different corrosive solutions (hydrochloric acid, sodium hydroxide, and sodium chloride). A quantitative experimental procedure was employed to determine the corrosion rate through the measurement of the weight loss of aluminum coupons prior to and after the immersion, and the results showed that all three oils were able to reduce the corrosion rate when compared to the samples without any inhibitor. Among them, coconut oil gave the best protection, followed by soybean oil and palm oil, because the adsorption of the organic compounds and fatty acids in the oils onto the aluminum surface formed a thin layer that separated the metal and the corrosive environment. Consequently, the results also showed that the use of bio-based oils can be a promising alternative to synthetic corrosion inhibitors in industries that use aluminumbased materials.
Physicochemical Characterization and Epoxidation of Jatropha Curcas Oil for Eco-Friendly Engine Lubricant Applications Putra, Agus Dwi; pradani, Yayi Febdia; Dewi Izzatus Tsamroh; Zakaria, Yahya; Mahfudi Sahli Subandi
Jurnal Teknik Vol 23 No 2 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i2.651

Abstract

This study aims to explore the potential of castor oil (Jatropha curcas L.) as a plant-based alternative engine lubricant and compare it to commercial mineral-based lubricants. The research process includes drying Jatropha seeds and epoxidizing the oil using oxidizing agents (H₂O₂) and (CH₃COOH) with variations of (1:0.075; 1:0.15; 1:0.225; and 1:0.30). Chemical testing was conducted to analyze the acid number of the oil, while physical testing was carried out to measure its viscosity index, flash point, and pour point. The results show that Jatropha oil has an acid number of 5.30, a viscosity index of 217, a flash point of 270°C, and a pour point of 0°C. Therefore, Jatropha oil demonstrates potential as a base material for engine lubricants due to its relatively high flash point, which approaches that of polyol ester (POE)-based oils. However, further modification with additives is required to lower its pour point, ensuring it remains fluid in colder climates such as those in subtropical regions.
Co-Authors Agasta, Dwi Damara Ahmad Muflih Ahmad Saepuddin Alfina Dewi Anggraeni Alfina Rahmadini Amelia Dini Wulandari Anggi Anggresita Wulandari Anjarwati, Prasasti Pambayun Asrul Hidayat Bella Cornelia Tjiptady Bella Cornelia Tjiptady Chintia Dwi Wangsa Kuswardani Choirina, Priska Chuzaimatul Fitriyah Danang Yugo Pratomo Dedi Romadon Dewi Izzatus Tsamroh Diama Rizky Septiawan Dian Julianto Wahyudi Dian Julianto Wahyudi Dimas Hani Saputra Dwi Damara Agasta Erlillah Rizqi Kusuma Pradani Falah Dova Ramanda Fitriani, Indah Martha Ghufron, Wildanul Gita Sirril Qolbi harlin, harlin Ifan Bahtiar Imam Muhatrom Imam Muhtarom Imam Muhtarom Indah Martha Fitriani Karim, Saifuddin Khoirul Kamahmudin Luchyto Chandra Permadi Permadi M Dafid M. Zannur Habib Mahfudi Sahli Subandi Marsono Marsono Meditama, Ratna Fajarwati Moch Abdul Rozak Umar Mochamad Sulaiman Mohammad Omar AL Momani Mojibur Monalisa Wirawan Muchamad Hari Nugroho Muhammad Ana Zamzami Muhammad Arif Nur Huda Muhammad Hudan Rahmat Muhammad Rizal Akbar Zamzami Muhammad Rizki Chanda Nicko Nur Rakhmaddian Nikmatus Sholikha Nugroho, Fahmi Setyo Permadi, Luchyto Chandra Prasasti Pambayun Anjarwati Praya, Rangga Abi Putra, Agus Dwi Rahman, Rifki Zainur Ratna Fajarwati Meditama Ratna Fajarwati Meditama Rohman, Mojibur Saifuddin Karim Saifuddin Karim Saiful Hardiyanto Satya Rafi Eka Prayoga Subekhi, Prido Sugeng Pramudibyo Talifatim Machfuroh Talifatim Machfuroh, Talifatim Tamara Rahma Widowati Tjiptady, Bella Tjiptady, Bella Cornelia Widowati, Tamara Rahma Wulandari, Amelia Dini Yahya Zakaria Yevi Puji Lestari Yuliana Aziza Yuliana Aziza Zainal Abidin