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All Journal Rotasi Ganendra: Majalah IPTEK Nuklir Urania Jurnal Ilmiah Daur Bahan Bakar Nuklir Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Rekayasa Mesin JTERA (Jurnal Teknologi Rekayasa) Indonesian Journal of Chemistry Jurnal Kartika Kimia Majalah Ilmiah Pengkajian Industri Kappa Journal Piston: Journal of Technical Engineering International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Journal of Innovation Research and Knowledge Tedc Metalurgi Journal Of Chemical Process Engineering Cognitia : International Engineering Journal
Djoko Hadi Prajitno
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The Effect of Solution Treatment on Mechanical Properties and Micro Structure of Zr-10Ti-Sn Alloy for Screw Dental Implant Application Utami, Deva Ayu; Mulyani, R. Henny; Prajitno, Djoko Hadi
International Journal of Mechanical Engineering Technologies and Applications Vol. 2 No. 2 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.02.2

Abstract

The research was to investigate the effect of solution treatment on the mechanical properties and microstructure of Zr-10Ti-Sn alloy for dental implant biomaterials. The addition of titanium as a material has good corrosion resistance and stannum as a material has a low modulus young and can increase hardness of the alloy in accordance with the material criteria as a dental implant, which must have good corrosion resistance and good mechanical properties. Zr -10Ti-xSn alloy (x = 0, 2, and 4% wt) were subjected to solution treatment with temperature variations of 900oC, 1000oC and 1100oC with water quenching. The results  is increase in stannum content can also increase the hardness because stannum can inhibit the enlargement of grain boundaries and the microstructure is more homogeneous and tends to be smaller with an uniaxial shape. Stannum as alpha stabilizer will form a hard alpha phase. Micro Vickers hardness test with the highest hardness value of 601,438 HV alloy Zr-10Ti-2Sn with 900oC solution treatment, phases formed were α-Zr and β-Zr and intermetallic Zr4Sn and SnTi3 Zr-10Ti-4Sn alloys which were identified using X-Ray Diffraction (XRD).
Synthesis of Mesoporous Nickel Using Electrodeposition Method Latifah, Sri Mulyati; Vito, Mochammad Ghais; Prajitno, Djoko Hadi
Metalurgi Vol 39, No 2 (2024): Metalurgi Vol. 39 No. 2 2024
Publisher : National Research and Innovation Agency (BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/metalurgi.2024.704

Abstract

Mesoporous material technology has recently become increasingly popular among scientists and industry professionals. Electrodeposition is a metal deposition process that employs an electric current. The most typical applications of electrodeposition are metal coating (electroplating) and the creation of porous materials. This study aimed to analyze the effects of current and nickel synthesis time on the formation of mesoporous nickel morphology using corn starch. The method for producing mesoporous nickel deposits uses an electrodeposition process using corn starch additives. The process of making mesoporous nickel varies at currents of 4, 5, and 6 A, holding times of 3, 4, and 5 hours, and additional weights of corn starch of 1, 2, and 3 g, with the weight of nickel deposits produced being 1.19, 1.3, and 1.9 g, with an increase in nickel deposits from currents of 4 to 6 A (holding time of 3 to 5 hours) of 0.71 g (59.66%). The smallest pore diameter of 112 nm was obtained using a current of 6 A, a holding time of 5 hours, with 3 g of corn starch. Characterization was carried out on the electrodeposition layer using XRD (x-ray diffraction) and SEM-EDS (scanning electron  icroscope-energy dispersive spectroscopy), where the results of the XRD analysis showed the presence of α-Ni, Ƴ-Fe, and Fe1Ni3 compounds, and the results of SEM-EDS showed porous Ni deposits with the highest Ni concentration above 80%. The bigger the current employed and the holding period in the electrodeposition process, the heavier the Ni deposit formed.
Corrosion Resistance of Ternary Zr-Ti-Cu Alloy for Dental Implant Application in Ringer Lactate Solution Contamined with Ulcer Medicine Dinanthi, Talitha Ratna; Syuryana, Ekha Panji; Prajitno, Djoko Hadi
Cognitia : International Engineering Journal Vol. 1 No. 1 (2025): Cognitia : International Engineering Journal
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/ciej.v1i1.1

Abstract

Implanted material is one of the solutions to overcome damage or the function of human organs. The many needs about implants or biomaterials make researchers continue to conduct various studies. One criterion as an implant material is that having good corrosion resistance so it does not have rejection from the body. This research aims to determine the corrosion behavior of Zr-Ti-Cu implant material in Lactated Ringer's solution. The Zr-Ti-Cu implant material uses a variation of 1% and 3% Cu content synthesized by the melting process using a Single Arc Melting Furnace with an atmospheric environment of argon. The results were characterized using an optical microscope and Vickers test equipment. Corrosion behavior of the Zr-Ti-Cu implant using a potentiostat with the Tafel polarization method in a Ringer's Lactated solution and Ringer’s Lactate solution that added with ulcer potion 10 mL. From the results of characterization with optical microscopy and XRD showed phases α-Zr and α-Ti, and intermetallic compounds Zr2Cu and Ti2Cu. Increasing Cu content can increase the hardness value so it has a hardness value between 528-619 HV. The addition of ulcer potion increases the corrosivity level of Ringer’s lactate solution. Corrosion resistance increased from 2,140 mpy to 1,571 mpy in Ringer's Lactate solution and from 2,060 mpy to 1,492 mpy in Ringer's Lactate solution with ulcer potion due to the addition of Cu in the alloy.
EFFECT OF NIOBIUM ADDITION ON THE ELECTROCHEMICAL AND MECHANICAL PROPERTIES OF TITANIUM ALLOYS AS BIOMATERIALS Dipodiwiryo, Adam Arlei; Djoko Hadi Prajitno; Raden Dadan Ramdan; Riza Wirawan
Journal of Innovation Research and Knowledge Vol. 4 No. 5: Oktober 2024
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jirk.v4i5.8694

Abstract

Titanium is a metal known for its high strength, lightweight, and excellent corrosion resistance, making it widely used as a biomaterial in medical applications. To further enhance these properties, particularly corrosion resistance and mechanical strength, niobium (Nb) was added to titanium-aluminum (Ti-Al) alloys. In this study, three alloy compositions, Ti-5Al-10Nb, Ti-5Al-8Nb, and Ti-5Al-6Nb, were fabricated using the Electric Arc Furnace (EAF) method. After the melting process, the specimens were characterized using Scanning Electron Microscopy (SEM) combined with Energy Dispersive Spectroscopy (EDS) to analyze the microstructure and alloying element distribution. X-Ray Diffraction (XRD) was employed to identify the crystalline phases formed in the alloys. Electrochemical testing was performed using the Tafel polarization method to measure corrosion rates, while mechanical testing was conducted using the Vickers hardness test to determine material hardness. The results showed that increasing niobium content in the titanium alloy significantly improved the corrosion resistance and hardness of the specimens. The Ti-5Al-10Nb specimen exhibited the lowest corrosion rate and highest hardness compared to the other specimens. These findings suggest that the addition of niobium can enhance the performance of titanium alloys as biomaterials, particularly for hip joint implant applications.
Corrosion Behavior of Ternary Zr-25Ti-5Sn Alloy Doped with Ge as Biomaterials Implant in Simulation Body Fluid Solution Pratama, Naufal Randi; Faizal, Faizal; Prajitno, Djoko Hadi
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 2 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2020.001.02.4

Abstract

Corrosion research of metal alloys of Zr-25Ti-5Sn and Zr-25Ti-3Sn-2Geas biomaterials has been carried out in fluid solution. Zr-25Ti-5Snalloy is a ternary metal alloy developed for hard tissue biomaterials. Zr-25Ti-5Sn and Zr-25Ti-3Sn-2Ge alloys is melted in electric arc furnace. After being melted Zr-25Ti-5Sn and Zr-25Ti-3Sn-2Ge were characterized by optical microscopy. Hardness testing was carried out by the hardness microvickers method to determine the effect of germanium addition on Zr-25Ti-5Sn alloys. Corrosion testing of ternary metal alloys Zr-25Ti-5Sn and Zr-25Ti-3Sn-2Ge was carried out by the Tafel polarization method using three electrode systems. From the results of microstructure examination with optical microscope, the microstructure found in the ternary metal alloy Zr-25Ti-5Sn and Zr-25Ti-3Sn-2Ge are parallel plates and dendritic. The hardness test results show that the addition of germanium to the Zr-25Ti-5Sn ternary alloy increased the hardness of the alloy. Corrosion test results on ternary alloy Zr-25Ti-5Sn and Zr-25Ti-3Sn-2Geindicated that corrosion resistance of Zr-25Ti-5Snincreased when no addition of Germanium to Zr-25Ti-5Snalloy.
Synthesis Polymer Matrix Composite Epoxy-FeNdB-Mn for Radar Absorbing Material Application Juniansyah, Gibran; Lathifah, Sri Mulyati; Prajitno, Djoko Hadi
International Journal of Mechanical Engineering Technologies and Applications Vol. 2 No. 1 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.01.1

Abstract

In recent years, applications using electromagnetic wave technology have grown rapidly. One of them is in the military field, the wave-absorbing material used to avoid detection such as aircraft, ships, or tanks requires a super thin absorbent material which has extraordinary absorption. One of the criteria for a wave absorbing material is a soft magnet and has a high Reflection Loss (RL). This research aims to see the effect of the addition of FeNdB and Mn on the synthesis of Polymer Matrix Composite (PMC) as a wave-absorbing material.The FeNdB milling process and Mechanical Alloying (MA) with Mn were carried out using a Planetary Ball Mill (PBM) at a speed of 1000 rpm for 60 minutes. synthesis of PMC by varying the composition of epoxy resin with magnetic powder 95: 5; 90:10; 85: 5. Based on the characterization results, the optimum RL was obtained at a composition of 85: 5 with a value of -22.40 dB at a frequency of 10.40 GHz and the magnetic properties after the addition of Mn were obtained HcJ 0.116 kOe and Br 0.41 kG. PMC hardness increased with the increase of powder in the sample with the highest value of 29.2 HD Shore D and the adhesion decreased with the addition of powder in the sample with the lowest value of 1 MPa.
The Effect of Solution Treatment on Mechanical Properties and Micro Structure of Zr-10Ti-Sn Alloy for Screw Dental Implant Application Utami, Deva Ayu; Mulyani, R. Henny; Prajitno, Djoko Hadi
International Journal of Mechanical Engineering Technologies and Applications Vol. 2 No. 2 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.02.2

Abstract

The research was to investigate the effect of solution treatment on the mechanical properties and microstructure of Zr-10Ti-Sn alloy for dental implant biomaterials. The addition of titanium as a material has good corrosion resistance and stannum as a material has a low modulus young and can increase hardness of the alloy in accordance with the material criteria as a dental implant, which must have good corrosion resistance and good mechanical properties. Zr -10Ti-xSn alloy (x = 0, 2, and 4% wt) were subjected to solution treatment with temperature variations of 900oC, 1000oC and 1100oC with water quenching. The results  is increase in stannum content can also increase the hardness because stannum can inhibit the enlargement of grain boundaries and the microstructure is more homogeneous and tends to be smaller with an uniaxial shape. Stannum as alpha stabilizer will form a hard alpha phase. Micro Vickers hardness test with the highest hardness value of 601,438 HV alloy Zr-10Ti-2Sn with 900oC solution treatment, phases formed were α-Zr and β-Zr and intermetallic Zr4Sn and SnTi3 Zr-10Ti-4Sn alloys which were identified using X-Ray Diffraction (XRD).
Pengaruh Variasi Suhu Sintering Terhadap Struktur Kristalin Hidroksiapatit Tulang Iga Sapi Murzid, Jihan Qothrunada; Suharta, Wayan Gede; Spardi, I Wayan; Suardana, Putu; Kasmawan, I Gde Antha; Artawan, I Nengah; Prajitno, Djoko Hadi
Kappa Journal Vol 7 No 2 (2023): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i2.20840

Abstract

A study entitled " The Effect of Sintering Temperature Variations on the Crystalline Structure of Bovine Bone Hydroxyapatite" has been carried out. The aim of this research is to understand how the sintering temperature influences the hydroxyapatite lattice parameters and to understand how the sintering temperature influences the volume and density of hydroxyapatite. The synthesis process begins with a calcination at 300 °C for one hour, followed by a sintering process with varying temperatures, namely 600 °C, 700 °C and 800 °C for samples A, B and C, respectively. To determine the hydroxyapatite content in the samples, then characterization using XRD was carried out. XRD results analysis was carried out using match3 and Rietica software. Identification results using match3 software obtained the presence of hydroxyapatite compounds and impurity compounds in the form of (Calcium trimagnesium carbonate huntite, Fluorine, Magnesium Hydrogensulfate Hydrate, Sassolite, Zemannite). The volume fraction of hydroxyapatite obtained in this study ranged from 68.6 – 82.8%. The higher the sintering temperature, the greater the volume fraction of hydroxyapatite. The Refinement results show that the higher the sintering temperature, the smaller the value of the lattice parameters in the direction of the a and c axes. Variations in sintering temperature also affect the resulting unit cell volume and density. The higher the sintering temperature, the smaller the unit cell volume, conversely the greater the unit cell density value.
PROSES SOLUTION TREATMENT DAN PENGARUHNYA TERHADAP SIFAT MEKANIK DAN STRUKTUR MIKRO PADUAN Zr-Ti-(x)Al PADA APLIKASI SCREW DENTAL IMPLANT Mulyani, Henny; Nurrobi, Mohamad Iqbal; Prajitno, Djoko Hadi
Jurnal TEDC Vol 17 No 3 (2023): JURNAL TEDC
Publisher : UPPM Politeknik TEDC Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70428/tedc.v17i3.757

Abstract

This research was to investigate the microstructure and mechanical properties of ternary alloys Zr-10Ti-(x)Al (x = 0, 2, 4 wt.%) through solution treatment process with temperature variations 900℃, 1000℃, and 1100℃. The results indicated that α and α' phase existed in Zr-10Ti-(x)Al alloys. The hardness of the Zr-10Ti-4Al alloys in 1100℃ treatment was significantly increased because of solution treatment process, from 382.462 HV (0% Al), 403.304 HV (2% Al), and 465.68 HV (4% Al) to 386.066 HV (0% Al), 452.244 HV (2% Al), and 494.016 HV (4% Al). The addition of Al will increase the hardness of alloy because of strengthening mechanism beside the formation of intermetallic compound, the solution treatment process will increase the percentage of β phase and generated the phase transformation into α' which increased the alloy’ mechanical properties. In conclusion, Zr-10Ti-4Al alloy will be a great potential material for dental implant biomaterial.
Annealing Effect on Improving the Mechanical Properties of Zirconium Based Biomaterials with the Addition of Yttrium Elements for Bone Plate Application Awwaluddin, Muhammad; Prajitno, Djoko Hadi; Soemardi, Tresna P.; Hastuty, Sri
Piston: Journal of Technical Engineering Vol. 8 No. 1 (2024)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v8i1.43200

Abstract

To improve the mechanical properties of biomaterials with zirconium-based alloys, especially on ductility, an annealing process was carried out. The process was carried out at a temperature of 800 oC and holding time for 3 hours in a vacuum chamber which was flowed by high purity argon gas. The composition of the alloy used in this study was Zr6Mo4TixY (x= 0, 1 and 3 %wt). Microstructure observations were carried out using microscope optic and Scanning Electron Microscopy (SEM) and mechanical properties observation using tensile testing. In this study, micro-sized specimens were used and followed the ASTM E8-04 standard with a surface roughness of 1µm. The results showed an increase in the tensile strength value after annealing process and decrease the modulus elasticity. In addition, the grain boundaries of the alloy are getting smaller, this shows the effect of annealing on changes in the properties of the material.
Co-Authors Achmad, Tria Laksana Ahmad Syafiq Akhmad Ardian Korda, Akhmad Ardian Ambardi, Pradoto Ambardi, Pradoto Andi Mustari, Asril Pramutadi Aprilianda, Adam Artawan, I Nengah Bambang Ariwahjoedi Basuki, Eddy Agus Budi Prawara Dani Gustaman Syarif Dinanthi, Talitha Ratna Dipodiwiryo, Adam Arlei Dzikry Syamsul Nur Alam Engkir Sukirman Erie Martides Fadhli Muhammad Faizal Faizal, Faizal henny Mulyani I Gde Antha Kasmawan Ihwan Bayu Setiawan Immanuel, Perdana Jihad, Bagus Hayatul Juniansyah, Gibran Lathifah, Sri Mulyati Latifah, Sri Mulyati Lestari, Ernyta Mei Muhammad Awwaluddin Mulyani, R. Henny Murzid, Jihan Qothrunada Mustari, Asrili Pramutadi Andi Nur Alam, Dzikry Syamsul Nur Alam, Dzikry Syamsul Nurrobi, Mohamad Iqbal Pawawoi, Pawawoi Pradoto Ambardi Pratama, Ahmad Brian Pratama, Naufal Randi R Henny Mulyani R. Henny Mulyani Raden Dadan Ramdan Raden Henny Mulyani Rahmanullah, Andhika Abdan Riza Wirawan Romadhona, Candra Dewi Roswita, Fahma Sarah Nasma'ul Aulia Setianto, Muhamad Hananuputra Setiawan, Yuniarto Hendrik Spardi, I Wayan Sri Bimo Pratomo, Sri Bimo Sri Hastuty, Sri Syuryana, Ekha Panji Tresna P. Soemardi Utami, Deva Ayu Vito, Mochammad Ghais Wafda, Hakimul Wayan Gede Suharta Widiawati, Nina Yongjin Kim, Yongjin Yuliani Carisca Tanjung