Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir
Isfandi
Unknown Affiliation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
PERCOBAAN PEMBUATAN PELAT ELEMEN BAKAR U-7Mo-xSi/Al DALAM UKURAN MINI Supardjo; Agoeng Kadarjono; Isfandi; Yatno Dwi Agus Susanto; Setia Permana; Guswardani
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 25 No. 3 (2019): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2019.25.3.5697

Abstract

The purpose of this study is to obtain the optimized process parameters in the fabrication of a U-7Mo-xSi/Al mini plate complying with the specifications. The process flow started with synthesizing U-7Mo-xSi alloys (x = 1%, 2%, and 3%) using depleted uranium and continued to preparing U-7Mo-xSi powder, U-7Mo-xSi/Al fuel core, and U-7Mo-xSi/Al fuel element plates. The quality of the product was determined by analyses/tests including tests of raw materials and products from each end of the process by the appropriate type of test which is commonly applied to the manufacturing process of plate type fuel. The quality of U-7Mo-xSi alloy ingots, U-7Mo-xSi powder, and U-7Mo-xSi/Al fuel core was satisfactorily good and in compliance with the specifications, indicating that the applied process parameters were appropriate. The obtained fuel element plates, however, have not satisfied the requirements especially the thickness of the cladding, where there are still several measurement points whose thickness is <0.25 mm. To obtain cladding thickness according to the required specifications, it is necessary to experiment with other rolling parameters or replacing the cladding material with material of higher hardness.
PELAPISAN PERMUKAAN BAJA TAHAN KARAT AISI 304 DENGAN KHROM OKSIDA MENGGUNAKAN METODA SPUTTERING Sungkono; Jan Setiawan; Isfandi; Ikhwanul Aziz
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 25 No. 2 (2019): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2019.25.2.5433

Abstract

Stainless steel has been used as structure material of power reactors of LWR, AGR and LMFBR types. The problem of structural materials that arises is low corrosion resistance and swelling in high irradiation environments. One method to overcome this problem is surface coating of the stainless steel cladding with chromium oxide. The aim of this study is to obtain the characteristics of microstructure, microhardness, and compounds formed in the surface layer of AISI 304 stainless steel. DC-sputtering method was used for the coating of AISI 304 surface. The coating process used coater material of chromium target and argon as sputtering gas which was mixed with oxygen gas with concentrations varying from 0 - 50% volume. The process was carried out at 10 - 20 mA current for 1 - 3 hours. Characterization of the layer includes microstructure observation using optical microscope, hardness with microhardness Vickers tester, and compounds analysis in layers with X-ray diffractometer. The results shows that the base metal microstructure is composed of austenite and carbide deposits. The metal-layer interface is clearly visible. The thickness of the resulted compact and homogeneous layer tends to increase for O2 gas composition in the range of 0 – 30 %volume but decrease for the range of 30 - 40 %volume and rise at 40 - 50 %volume. The hardness of the layer increases until oxygen gas is at 30 %volume and then decreases at 50 %volume of O2 gas. At a fixed value of O2 composition at a current of 10 - 20 mA and a process time of 1 - 3 hours, it is observed that the hardness of the SS 304 surface layer increases with increasing current and sputtering time. At a composition of 30 %volume of O2, 10 mA current and 2 hours process, the resulted layer contains CrO2.
Co-Authors Agoeng Kadarjono Guswardani Ikhwanul Aziz Jan Setiawan Setia Permana Sungkono Supardjo Yatno Dwi Agus Susanto