Austenitic ODS (Oxide Dispersion Strengthened) 316L steel was fabricated using 316L SS (Stainless Steel) pre-alloyed powder and yttria powders by mechanical milling with APS (Arc Plasma Sintering) method. The powders were milled in High Milling Shaker at 1000 rpm in rotational speed for 10 hours at 10 BPR (Ball Powder Ratio). As milled powders were pressed at 20 Ton and sintered with APS for 0 to 12 minutes at 70 A. The samples were analysed using X-Ray Diffraction (XRD), Microscope Optic (MO) with micro-hardness tester and Scanning Electron Microscope – Energy Dispersive X-Ray Spectroscope (SEM-EDS). The results of phase and microstructure showed the austenitic grade of the samples. The sintering time contributed to the microstructure of the samples. At room temperature, the mechanical properties of ODS 316L SS was higher than conventional 316L SS.

No abstract

No abstract

Ferritic ODS (Oxide Dispersion Strengthened) steel has been synthesis by Arc Plasma Sintering method with different electric current from milled powder in Fe-14Cr-0.5Y2O3 wt% composition. Ferritic milled powder was carried out using high-energy milling with various BPR (Ball to Powder Ratio) and milling duration. The samples’ crystallite size-strain, phase, and composition were analyzed by XRD (X-Ray Diffraction) with Rietveld methods. The microstructures and micro-hardness were investigated by Optical microscopy, SEM-EDS (Scanning Electron Microscopy-Energy Dispersion Scanning), and Vickers microhardness. The different electric currents of Arc plasma sintering affect the microstructure and mechanic properties of the samples. The results observed ferrite formation. Some void and aggregation were also observed in the samples. However, the microhardness increases by increasing the electric current. On the other hand, the main phase Fe-Cr was also observed in the samples, while the crystallite size-strain also changed by changing the electric current.

The performance of KLK06 CR004 as the iodine sampler system is certainly related with the specification, also with the adsorption properties and capacity of the filter filling material, which is applied on that system. A certain Activated Carbon material is applied as the filling material for the filter part of KLK06 CR004, for the purpose of radioactive iodine sampling from the released air through the RSG – GAS stack. The characterization of the activated carbon for KLK06 CR004, with and without TEDA doping, has been carried out to develop as a candidate for the iodine sampler system. The material used in this research was The KLK06 CR004 activated carbon and The KLK06 CR004- TEDA doping with various composition of TEDA. The surface morphology of the activated carbon was investigated by Scanning Electron Microscope (SEM). Moreover, the qualitative and quantitative analysis of the activated carbon composition was also carried out in this research, by occupying the Energy Dispersive Spectroscopy (EDS). The adsorption surface area and particle size sample were analyzed by the Particle Size Analyzer (PSA) and Brunauer, Emmett, and Teller (BET).