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All Journal Ganendra: Majalah IPTEK Nuklir Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Science and Technology Indonesia Indonesian Journal of Chemistry Jurnal Sains Materi Indonesia
Wafda, Hakimul
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Other

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SINTESIS PADUAN BARU BAJA OXIDE DISPERSION STRENGTHENED (ODS) FERITIK Fe-Cr-Al-W-Ti-Zr DENGAN DISPERSOID Y2O3 SEBAGAI KANDIDAT MATERIAL CLADDING ELEMEN BAKAR REAKTOR NUKLIR DENGAN METODE MEKANOSINTESIS Wafda, Hakimul; Prajitno, Djoko Hadi; Mustari, Asrili Pramutadi Andi; Roswita, Fahma
GANENDRA Majalah IPTEK Nuklir Volume 26 Nomor 2, 2023
Publisher : Website

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/gnd.2023.6856

Abstract

Bahan struktur merupakan salah satu kunci penting dalam penelitian reaktor nuklir generasi keempat. Sejak peristiwa kecelakaan di pembangkit listrik tenaga nuklir Fukushima–Daiichi, telah terjadi peningkatan pengembangan Accident Tolerant Fuel (ATF) Cladding atau kelongsong bahan bakar toleran kecelakaan untuk menghindari kecelakaan reaktor air ringan. Maka dari itu Inovasi perekayasaan ATF merupakan salah satu kegiatan dalam litbang material maju yang sedang banyak dikembangkan. Kandidat material yang paling menjanjikan untuk ATF cladding adalah Baja yang diperkuat dengan dispersi oksida (ODS). Dalam penelitian ini baja ODS feritik Fe-Cr-Al-W-Ti-Zr-Y2O3 disintesis dengan metode mekanosintesis menggunakan alat planetary ball mill (PBM) dengan variasi komposisi Zr sebesar 0%, 0.5%, 1%, dan 1.5%. Mekanosintesis dilakukan selama 8 jam dengan menggunakan bola stainless steel. Perbandingan berat antara sampel dengan bola adalah 1:10. Kemudian dilakukan karakterisasi menggunakan mikroskop optik, XRD, dan SEM-EDS. Hasil observasi menunjukkan homogenitas yang baik pada bahan hasil sintesis.
High Temperature Oxidation Behavior of ODS Ferritic Stainless Steel Fe-16Cr-4Al-1Ni-0.4Y2O3 Wafda, Hakimul; Prajitno, Djoko Hadi; Basuki, Eddy Agus; Syafiq, Ahmad; Widiawati, Nina; Andi Mustari, Asril Pramutadi
Indonesian Journal of Chemistry Vol 24, No 5 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.95284

Abstract

This study investigates the isothermic oxidation behavior of the new ODS alloy Fe-16Cr-4Al-1Ni-0.4Y2O3 (% by weight) at 700, 800 and 900 °C, with exposure times of 5, 20, 50, and 100 h at each temperature. The purpose is to obtain new data on its high-temperature parabolic oxidation constant for assessing oxidation resistance. The methods used include isothermal oxidation testing, XRD, SEM-EDS characterization, and analysis of oxidation kinetics by monitoring changes in oxide thickness using microscopy and SEM-EDS. The oxide products formed on the sample surface are Fe2O3, Fe3O4, AlFe2O4, and (Fe,Cr)2O3. Al and Cr oxides are located under the dominant Fe oxide layer on the surface of the sample. The oxidation test results showed that the most protective sample was obtained at a temperature of 700 °C for 100 h with an oxide thickness of 263.99 μm. The kinetics analysis correlates strongly with the parabolic equation (R2 ≈ 1). The oxidation rate constants at temperatures of 700, 800, and 900 °C were 681.76, 2957.5, and 12300 μm2 h−1, respectively. The activation energy required by the oxidation reaction in this alloy is 136.5 kJ mol−1. This research enhances understanding and potential applications of the Fe-16Cr-4Al-1Ni-0.4Y2O3 alloy in high-temperature environments.
Pengaruh Perlakuan Panas Fase β Terhadap Mikrostruktur Paduan Zr-Nb-Mo-Y-Sn Wafda, Hakimul; Prajitno, Djoko Hadi
Prosiding Sains Nasional dan Teknologi Vol 14, No 1 (2024): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 2024
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/psnst.v14i1.11989

Abstract

Penelitian ini dilakukan untuk mempelajari pengaruh perlakuan panas fase β terhadap mikrostruktur dan kekerasan dari paduan Zr-Nb-Mo-Y-Sn dengan variasi Sn (0,5%, 1,5%, 2,5% Sn). Paduan ini disintesa menggunakan electric arc furnace dengan gas argon kemurnian tinggi. Perlakuan panas dilakukan pada temperatur 1000°C selama 5 jam, diikuti dengan pendinginan cepat (quenching) dalam media air. Setelah perlakuan panas, paduan tersebut dikarakterisasi menggunakan mikroskop optik dan SEM-EDS. Analisis mikroskopi optik dan SEM-EDS menunjukkan mikrostruktur berbentuk anyaman keranjang (basket-weave). Analisis XRD dilakukan untuk memeriksa fase-fase paduan, dan hasilnya menunjukkan bahwa paduan memiliki fase alfa yang dominan dengan sedikit fase beta. Uji kekerasan juga dilakukan untuk menentukan tingkat kekerasan paduan sebelum dan sesudah perlakuan panas. Hasil uji kekerasan menunjukkan peningkatan kekerasan paduan setelah perlakuan panas, yang mengindikasikan bahwa perlakuan panas beta dapat meningkatkan kekerasan paduan
Corrosion Behavior of Modified F/M Steel with Ti and Dispersed Oxides: Y2O3 and ZrO2 Under High Temperature in Static Liquid Lead Setyo Hadi, Dhimas; Wafda, Hakimul; Pramutadi Andi Mustari, Asril; Trisnawan, Veri; Widiawati, Nina; Miftasani, Fitria; Hadi Prajitno, Djoko
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.877-888

Abstract

This study investigates the corrosion resistance of Oxide Dispersion Strengthened (ODS) steel in a lead environment, which is crucial for Lead-Cooled Fast Reactors (LFR), a type of Generation IV nuclear reactor. To improve corrosion resistance, two types of oxides-yttrium oxide (Y2O3) and zirconium oxide (ZrO2)-were added individually and in combination to the ODS steel. The samples were synthesized via powder metallurgy and characterized using optical microscopy, X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), and Vickers hardness testing. Corrosion testing was conducted in static liquid lead at 550°C for 75 hours. The results showed that the addition of Y2O3 and ZrO2 significantly refines grain structure, increases hardness, and promotes the formation of stable, protective oxide layers. Particularly, the dual-oxide (Y2O3+ ZrO2) sample exhibited the most uniform and effective oxide barrier, indicating improved resistance to lead corrosion. These findings demonstrate that dual-oxide dispersion is a promising strategy for improving the durability of structural materials in LFR applications.
High Temperature Corrosion On Inconel and Carbon Steel Filler of Weldment in Liquid Pb at 800 ̊C pramutadi, asril; wafda, hakimul; P.M. Adi
Jurnal Sains Materi Indonesia Vol. 27 No. 2 (2026): Jurnal Sains Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2026.11718

Abstract

This study evaluates the corrosion behavior of SS316 material welded using Inconel and 70S fillers in a static liquid lead (Pb) environment saturated with oxygen at 800 °C for 36 hours, simulating accident conditions in a lead-cooled fast reactor (LFR). Welding was carried out using laser welding (Inconel filler) and metal inert gas (MIG) (70S filler) methods, representing structural joints in the reactor. The results of scanning electron microscope (SEM) and energy dispersive X-ray (EDX) analysis showed the formation of a spinel-type oxide layer (Fe-Cr-O) in both weld areas, with the laser welding sample showing deeper Pb penetration due to the porosity of the oxide layer. In contrast, in MIG welding, the oxide layer was denser with limited Pb penetration at the spinel-matrix interface. The base metal (BM) only formed a thin layer without significant oxide, but showed lower Pb penetration. These results provide critical insights into filler metal performance under extreme conditions, supporting material selection and weld design strategies for enhanced safety and longevity in next-generation lead-cooled fast reactors.
Co-Authors Ahmad Syafiq Andi Mustari, Asril Pramutadi Basuki, Eddy Agus Djoko Hadi Prajitno Hadi Prajitno, Djoko Miftasani, Fitria Mustari, Asrili Pramutadi Andi P.M. Adi Pramutadi Andi Mustari, Asril Pramutadi, Asril Roswita, Fahma Setyo Hadi, Dhimas Trisnawan, Veri Widiawati, Nina