Kusdi Prijono, Amin Suhadi



Fe-Cr      merupakan  paduan yang memiliki ketahanan pada suhu tinggi dan kemampuan yang dapat digunakan sebagai interkonek pada sel bakar Solid Oxide Fuel Cell (SOFC). Pada penelitian ini telah dilakukan sintesis bongkah paduan Fe-Cr dengan menggunakan serbuk paduan mikro Fe-Cr hasil sintesis dengan metode ultrasonik. Metode ultrasonik dimanfaatkan untuk sintesis paduan mikro Fe-Cr melalui penggunaan gelombang suara ultrasonik. Langkah yang dilakukan adalah memadatkan partikel paduan mikro Fe-Cr dengan  kompaksi tanpa lubrikan, hasil kompaksi dimasukan kedalam kapsul kaca kuarsa selanjutnya dilakukan  proses variasi sintering 11000C, 12000C dan 13000C pada kondisi suhu maximal ditahan selama 1 jam , lalu didinginkan secara normal dalam tungku. Karakterisasi strukturmikro dilakukan dengan Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (SEM-EDS), X-Ray Diffraction (XRD) disertai analisis dengan metode MAUD (Material Analisys Using Diffraction ) dan pengukuran Nilai kekerasan sesungguhnya. Partikel paduan mikro Fe-Cr lebih stabil dan konsisten dalam pembentukan fasa bongkah paduan Fe-Cr melalui variasi sintering. Diperoleh bongkah paduan Fe-Cr homogen tanpa oksida.

Kata kunci: Paduan mikro Fe-Cr, Ultrasonik, Kapsul Kuarsa, Sintering



Fe-Cr is an alloy that has a high temperature resistance and is potential to be used as an interconnect on Solid Oxide Fuel Cell (SOFC) fuel cells. In this research, Fe-Cr alloys have been synthesized using Super Fe-Cr micro alloy powder with ultrasonic method. The ultrasonic method is utilized for the synthesis of Fe-Cr micro alloys through the use of ultrasonic sound waves. The steps taken were the consolidation of the Fe-Cr micro alloy particles through compaction without lubricant, then in a quartz glass capsule a sintering process variation of 11000C, 12000C and 13000C at maximum temperature conditions retained for 1 hour, then cooled normally in the furnace. Characterization of microstructure was performed by Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (SEM-EDS), X-Ray Diffraction (XRD) with analysis by MAUD method (Material Analisys Using Diffraction) and actual density measurement. The Fe-Cr micro alloy particles are more stable and consistent in the formation of the Fe-Cr alloy phase via sintering variations. The alloys of Fe-Cr are homogenous without oxide.

Keyword : Micro-alloy Fe-Cr, Ultrasonic, Capsule Quartz, Sintering

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