PENGARUH SUHU SINTERING TERHADAP KEKERASAN PADUAN MIKRO Fe-Cr HASIL METODE ULTRASONIK

Kusdi Prijono, Amin Suhadi

Abstract


Abstrak

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

 

Abstract

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


Full Text:

PDF

References


. I.Antepara, I. Villarreal, L.M. Rodríguez-Martínez, N. Lecanda, U. Castro, and A. Laresgoiti, "Evaluation of ferritic steels for use as interconnects and porous metal supports in IT-SOFCs." Journal of Power Sources 151, pp 103- 107.2005.

. R. Nowosielski, R. Babilas, "Fe-based bulk metallic glasses prepared by centrifugal casting method."Journal of Achievements in Materials and Manufacturing Engineering, vol. 48, Issue 2, pp. 153-160, Oct. 2011.

A. Venskutonis, W. Glatz and G. Kunschert, "P/M Processing of ODS Cr- and FeCr-based alloys for Solid Oxide Fuel CellApplications." in 16th Plansee seminar: powder metallurgical high performance materials, 2005, pp.534-544.

. S. Darwin, S. K. Deni, H. Saryanto, H. Sulaiman, M. A. Othman, and U. Pudji. "Oxidation Resistance of

Fe80Cr20 Alloys Treated by Rare Earth Element Ion Implantation." inAIP Conference Proceedings, vol. 1394, 2010, pp. 90-102.

. J. C. Hwan, L. H. Gyou, K. C. Joong, and S. B. Bhaduri. "Synthesis of Cu-Ni alloy powder directly from metal salts solution." Journal of Nanoparticle Research, vol.5, pp.383-388. 2003.

. D. J. D Silva, A. Silva, R. Machado, A. P. Paulo, Wendhause, "Processing of The Fe3Si Alloy From Prealloyed Powder Fe45Si by Injection Metal Molding." Materials Science Forum, vol. 591-593, pp 86-90. 2008.

. L.A. P. Maqueda,A. Duran, and J. L. P. Rodrýguez, "Preparation of submicron talc particles by sonication." Appl. Clay Sci., vol.28, pp. 245-255. 2005.

. P. R. Gogate, R. K. Tayal, and A. B. pandit."Cavitation: A Technology on the horizon."Current Science, vol. 91, no. 1, July. 2006.

. R. Kuppa, V. S. Moholkar. "Physical features of ultrasound-enhanced heterogeneous permanganate oxidation." Ultrason Sonochem, vol.17, pp.123-131. 2010.

. H. D. Hanh, N. T. Dong, C. Starvarache, K. Okitsu, Y. Maeda, and R. Nishimura. "Methanolysis of

Triolein by Low Frequency Ultrasonic Irradiation."Energy Converse. Manage., vol. 49, pp. 276-280.2008.

. M. Thirunavukkarasu and N. Kanagathara."Ultrasonic Studies on Non-Aqueous Solutions of Carbon Tetra Chloride in Toluene." International Journal of Chemistry Research, vol. 2, Issue 4. 2011.

. M. Silalahi,A. Dimyati, S. Harjanto, P. Untoro, B.Suharno. "Microalloying of FeCr by using Ultrasonic Irradiation.(dalam pengajuan ke International Journal of Technology).

. W. Pilarczyk, R. Nowosielski, and A. Pilarczyk."The structural study of Ti-Si-C alloys produced by mechanical alloying method." Archives ofMaterials Science and Engineering, vol. 38, pp.78-84.2009.

. H. F. Sun, X. W. Li, J. Feng, W. Fang. "Characterization of TiAl-based alloy with highcontent Nb by powder metallurgy," Trans.Nonferrous Met. Soc. China, vol. 22, pp. s491-s495.2012.

. ICDD, Software PCPDFWIN VERSION 1.30 (C) Copyright 1997

. K. T. Jacob, S. Raj, and L. Rannesh. "Vegard's law: a fundamental relation or an approximation?"International Journal of Materials Research, vol.9, pp. 776-779. 2007.

. F. Izumi. "Rietveld Analysis System RIETAN, A Software Package for the Pietan Analysis and Simulation of X-ray and Neutron Diffraction Patterns." Rigaku J., vol.6, no.1, pp. 10. 1989.

. S. Suminta dan E. Kartini. "Analisis Struktur Komposit (AgI)X (AgPO3)1-X Dengan Metode Rietveld." Jurnal Sains Materi Indonesia, pp. 196 - 201, Oct. 2006.

. S. J. L. Kang. Sintering Densification, Grain Growth & Microstructure. Elsevier, 2005, pp. 39-50.

. R. Abbhaschian, L. Abbhaschian, R. E. R. Hill. Physical Metallurgy Principles, fourth edition. Cengage Learning, 2008, pp. 261-26.

. A. R. Annamalai, A. Upadhaya, and D. Agarwal. "Effect of heating mode on sintering of ferrous compacts through powder metallurgy route."International Heat Treatment and SurfaceEngineering, vol. 5, no. 4, pp. 155-160. 2011


Refbacks

  • There are currently no refbacks.