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All Journal Jurnal Cakrawala Hukum Al-Qisth Law Review Journal of Energy, Mechanical, Material and Manufacturing Engineering The Indonesian Journal of International Clinical Legal Education Jurnal Rekayasa, Teknologi, dan Sains Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Jurnal Dedikasi Hukum Indonesia Law Reform Journal (ILREJ) Notary Law Journal Jurnal Indonesia : Manajemen Informatika dan Komunikasi The Indonesian Journal of International Clinical Legal Education
Sofyan Arief
University Of Muhammadiyah Malang
Aerospace Engineering Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Social Sciences

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PENGARUH TEGANGAN LISTRIK TERHADAP KETEBALAN LAPISAN DAN LAJU KOROSI (MPY) HASIL ELEKTTROPLATING PLAT BESI STRIP DENGAN PELAPIS TEMBAGA Arkha, Abdullah; Budiarta, Usman; Sofyan, Arief
Jurnal Rekayasa Teknologi dan sains Vol 2, No 1 (2018): Jurnal Rekayasa, Teknologi, dan Sains
Publisher : Fakultas Teknik Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jrets.v2i1.1117

Abstract

Proses pelapisan dengan cara listrik atau elektroplating adalah proses pelapisan logam dan non logam yang menggunakan listrik arus searah melalui metode elektrolisis. Lapis listrik memberikan suatu perlindungan logam dengan memanfaatkan logam-logam tertentu sebagai lapis lindung misalnya tembaga, nikel, seng krom, emas, perak, kuningan, perunggu, dan lain sebagainya. Tujuan dari penelitian ini adalah mendapatkan pengaruh tegangan yang digunakan terhadap ketebalan lapisan tembaga pada plat besi serta laju korosi yang terjadi pada pada variasi variabel tegangan sebesar 6, 9, 12, 15 volt, dan menentukan hasil pelapisan yang paling baik dan paling tebal serta memiliki laju korosi terendah. Material yang digunakan untuk menjadi spesimen pada penelitian ini adalah plat besi dengan dimensi berurutan panjang x lebar x tebal adalah 80 x 22 x 2 dalam satuan milimeter. Untuk bahan pelapis menggunakan larutan tembaga sianida (CUCN) dengan waktu pencelupan selama 20 menit. Untuk perhitungan laju korosi menggunakan metode pengurangan berat dari perendaman di larutan korosif, dan larutan korosif yang dipilih adalah campuran larutan asam nitrat (HNO3) 40 ml dan aquades 60 ml. Dari hasil pengaruh tegangan yang diberikan pada proses elektroplating terhadap ketebalan lapisan pada spesimen, tebal lapisan rata-rata tertinggi di dapat pada spesimen yang berlabel 5 yaitu 0,12mm (120 mikron) yang mana tegangan yang diberikan sebesar 15 volt. Dari hasil pengkorosian yang dilakukan, laju korosi rata-rata terendah di dapat juga pada spesimen yang berlabel 5 yaitu 213,67 Mpy.Kata kunci : elektroplating, laju korosi (Mpy), pelapisan tembaga, variasi tegangan elektroplating.ABSTRACT: The Effect Of Electric Voltage On The Layer Thickness And Corrosion Rate (Mpy) Elekttroplating Results Plat Iron Strip With Copper Copper. Electrical coating process or electroplating is a process of coating a metal object by electrolytic deposition with another metal. Electroplating enables metal protection by utilizing certain metals as a protective metal like copper, nickel, zinc, chromium, gold, silver, brass, bronze etc. The objective of this study was to identify the effect of electricity voltage for electroplating process towards copper layer thickness on iron plate and corrosion rates for voltage variations on 6, 9, 12 and 15 volt. As addition, this study tried to find out the best coating result, the thickest and the lowest corrosion rate. The material used as specimen for this study was an iron plate with dimension length x width x thick, 80 x 22 x 2, respectively (in millimeter). The coat was made by immersing the plate into cyanide solution (CUCN) for 20 minutes. For calculating rate of corrosion through weight reduction method by submersing it into corrosive solution; the corrosive solution was compound from 40 ml nitric acid (HNO3) and 60 ml water. Result showed that the thickest layer was achieved on specimen with 5 label, 0.12 mm (120 micron) with 15 volt. The corrosion process revealed that the lowest rate of corrosion happened on specimen with label 5 for 213.67 Mpy.Keywords : electroplating, rate of corrosion (Mpy), copper coating, electroplating voltage variation.
Law Construction in Modern Society Sofyan Arief
The Indonesian Journal of International Clinical Legal Education Vol. 1 No. 1 (2019): March
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/iccle.v1i1.36328

Abstract

The effectiveness of law as a tool for social construction should ideally enhance our societal framework and address the challenges of the evolving era. However, contemporary observations reveal a growing lack of trust in the legal system. Critics point to perceived deficiencies in the quality of laws as agents of social construction and in achieving substantive justice. Moreover, a palpable anxiety surrounding a legitimacy crisis is evident. The role of law as a medium for social construction, aiming to establish a just and prosperous society, faces considerable resistance. Understanding the root causes behind society's struggle to interpret and embrace the purpose of law as a social construction instrument becomes imperative. The inadequate level of legal awareness among the populace is closely linked to issues such as educational disparities. The existing education systems, patterns of regulatory socialization, and restricted public access to information contribute to a diminished recognition of the importance of law. Addressing these challenges necessitates a focus on education as a viable solution. By elevating legal awareness, it is anticipated that the propensity for individuals to contravene the law would diminish. Therefore, investing in public education emerges as a promising strategy to foster the realization of a modern, constructively developed society.
Legal Validity of Virtual Land Ownership under the Civil Code: A Comparative Analysis and Protection Framework Achmad Billy Badruzzaman; Sofyan Arief; Yohana Puspitasari Wardoyo
Jurnal Cakrawala Hukum Vol. 17 No. 2 (2026): August 2026
Publisher : Faculty of Law, University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/idjch.v17i2.17288

Abstract

Abstract: The metaverse and virtual land, exemplified by platforms like RansVerse, have evolved from speculative concepts into commercial infrastructure. However, this commercial reality outpaces Indonesia’s legal framework, which lacks explicit statutory recognition of virtual land as property. Using a normative-juridical method with statutory, conceptual, and comparative approaches, this study examines the contractual validity of virtual land transactions under Article 1320 of the Indonesian Civil Code, compares Indonesia's regulatory stance with the United States and the European Union, and identifies available dispute-resolution mechanisms. The findings indicate that virtual land transactions via smart contracts and NFTs satisfy the four elements of contract validity. Because cryptocurrency cannot serve as legal tender in Indonesia, these transactions are properly characterized as asset-exchange agreements under Article 1541. Comparatively, Indonesia relies on civil-code analogy, the United States on contractual Terms of Service, and the European Union on unified statutory instruments. Meanwhile, dispute resolution remains constrained by jurisdictional and evidentiary uncertainties. The study concludes that legal certainty requires dedicated legislation on digital-property registration and consumer protection.
Co-Authors , Andri Achmad Billy Badruzzaman Agus Zainudin Alwanto, Hilmi Amir Hamzah Anindito Purnowidodo Arief Rizki Fadhillah Arif, Sulthan Cendikia Arkha, Abdullah Azhar Muttaqin Budiarta, Usman Ely, Azis Erfan Dani Septia Fauzan, Fauzan Herwastoeti, Herwastoeti Koto, J M Syukri Maftuchah Maftuchah Moch. Agus Choiron Perdana, Arya Putra Sihombing, Galuh Leonardo Siti Rofida Umi Sakdiyah Rahmawati Widodo, Teguh Dwi Wirawan, Willy Artha Yohana Puspitasari Wardoyo