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All Journal Abdi Masya ARMATUR : Artikel Teknik Mesin dan Manufaktur
Mutaqin, Niki Agastia
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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PEMBERDAYAAN TERNAK IKAN NILA SISTEM KINCIR AIR HEMAT ENERGI DI KABUPATEN KARANGANYAR Prihatin, Joko Yunianto; Pambudi, Slamet; Mutaqin, Niki Agastia; Sinatrya, Cahya
Abdi Masya Vol 6 No 1
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/abdimasya.v6i1.462

Abstract

Nila fish is a food source containing animal protein, which is important for human health. The health of nila fish is the main factor that is prioritized by a number of cultivators and livestock breeders. The more quality air in the pond, the more stable the pond temperature will be, and the fish growth will accelerate. The air source comes from nature and is artificial, using a water wheel. The main problem is that the driving engine resource is quite large, 1 pk, which increases operational costs. This activity has the main objective of applying the energy-saving horizontal water mixing technique in fish pond cultivation. The method applied is observation of needs and problems, followed by design and manufacture of tools, and ending with periodic evaluation. The result achieved is that a 1/5 pk energy-efficient water wheel using a gear transmission is able to increase the quality of oxygen content in the tilapia pond.
Pengaruh Variasi Waktu Sputtering Terhadap Karakteristik Mekanik dan Evolusi Struktur Mikro Baja AISI 4140 Mutaqin, Niki Agastia; Amarullah
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 2 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i2.11127

Abstract

AISI 4140 steel is a high‑strength, low‑alloy material commonly used in mechanical components subjected to high load and friction. Although its bulk properties are favorable, surface modification is often required to enhance wear resistance and prolong service life. This study investigates the influence of DC sputtering Titanium Nitride (TiN) deposition time on the mechanical performance and microstructural evolution of AISI 4140 steel. The experimental procedure varied sputtering times at 30, 60, 90, 120, and 150 minutes while maintaining constant processing parameters. Characterization techniques included Vickers hardness testing, wear testing, and SEM–EDX analysis to evaluate coating morphology and coating–substrate interface quality. The results indicate that TiN deposition significantly enhances surface hardness compared to the uncoated substrate. The maximum hardness value of 186.66 VHN was achieved at 60 minutes of deposition, corresponding to a dense, uniform coating with strong adhesion. Prolonged deposition times, however, led to decreased hardness and increased wear rate, attributed to excessive coating thickness, microstructural non-uniformity, and the formation of micro-defects. SEM observations corroborate these findings by revealing notable variations in coating morphology and interface integrity across deposition durations. Overall, the study concludes that sputtering time is a critical parameter in optimizing TiN coatings to improve the surface performance of AISI 4140 steel for engineering applications.
Co-Authors Amarullah Joko Yunianto Prihatin Pambudi, Slamet Sinatrya, Cahya