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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Sains Materi Indonesia Majalah Ilmiah Pengkajian Industri Metalurgi Jurnal Ilmiah Teknik Mesin Poros Journal of Materials Exploration and Findings Makara Journal of Science Makara Journal of Technology Metalurgi Recent in Engineering Science and Technology
Eddy S Siradj
Department Of Metallurgy And Materials Engineering, Universitas Indonesia
Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Journal : Makara Journal of Science

 1 
PENGARUH Mg TERHADAP KEKERASAN KOMPOSIT MATRIKS KERAMIK Al2O3/Al Sahari, G.N. Anastasia; Zulfia, Anne; Siradj, Eddy S.
Makara Journal of Science Vol. 13, No. 1
Publisher : UI Scholars Hub

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Abstract

Magnesium Effect to the Hardness of Al2O3/Al Ceramic Matrix Composites. Composite is an alternative material which has satisfying properties and can be accommodated for certain applications. Ceramic Matrix Composites (CMCs) is one of the composite types that are very interesting in terms of high temperature applications material. In this paper, we investigate the effects of Mg addition on the hardness of Al2O3 Ceramic Matrix Composites which was produced by directed metal oxidation (Dimox) method. The CMCs material is made by placing Al ingot under mixture alumina and percentage of Mg 5, 8, 10, and 12% wt. The processing temperature was 1100°C for 24 hours followed by cooling to room temperature in the furnace. The results show that increasing of infiltration, the hardness increased to 1221 VHN maximum at 8% wt Mg and then decrease again as the increment amount of Mg.
KOMPAKTIBILITAS KOMPOSIT ISOTROPIK Al/Al2O3 DENGAN VARIABEL WAKTU TAHAN SINTER Widyastuti, Widyastuti; Siradj, Eddy S; Priadi, Dedi; Zulfia, Anne
Makara Journal of Science Vol. 12, No. 2
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Compactibility of Al/Al2O3 Isotropic Composite with Variation of Holding Time Sintering. The requirement of component with structural ability, light weight and also strength is increasing base on Metal Matrix Composites (MMCs) by aluminum as matrix (AMCs). A structural ability is connected to composites compactibility which is depend on quality of interfacial bounding. Powder metallurgy is one of method to produce composite with powder mixing, compacting and sintering. Volume fractions reinforced and sintering time can influence composites compactibility. Volume fractions reinforced variable can produce different reinforcement effect. Beside that, on sintering enables the formation of new phase during sintering time. In this research, Al/Al2O3 isotropic composites are made with aluminum as matrix and alumina (Al2O3) as reinforced. Volume fraction reinforced used 10%. 20%. 30% and 40%. Sintering temperature and compaction pressure are each 600o C and 15 kN. The tests that applied are compression and metallographic test. The result that obtained is optimum compactibility of Al/Al2O3 composite reached at holding time 2 hour. During sintering, new phase can occur that is aluminum oxides (alumina), with unstable properties. The best volume fraction reinforced and holding time sintering are 40% and 2 hours.
PENGARUH PELAPISAN PERMUKAAN PARTIKEL SiC DENGAN OKSIDA METAL TERHADAP MODULUS ELASTISITAS KOMPOSIT Al/SiC Zainuri, M; Siradj, Eddy S; Priadi, Dedi; Zulfia, Anne; Darminto, Darminto
Makara Journal of Science Vol. 12, No. 2
Publisher : UI Scholars Hub

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Abstract

The Influence of Coating Oxide Metal on Surface of SiC Particles to Elastic Modulus of Al/SiC Composites. The isotropic composites of Al/SiC is made by powder metallurgy method, the quality of mechanical materials depend on interfacial bonding between matrix (Al) and reinforcement (SiC). The quality of interfacial bonding can influence to elastic modulus of composites which is made by solid process. SiC particles were coated by metal oxide aim to enhance quality interfacial bonding between matrix and reinforcement. These research using three kinds of coating materials, which are Mg oxide, Cu oxide and Al oxide, and these materials were deposited on surface of SiC particles. From three kinds of materials coating Al2O3 is the best to enhance quality interfacial bonding between matrix and reinforce than the others as CuO or MgO. There is Intermetalic phase formatted on CuO coating, and MgO coating have many porous where they can make decrease quality of Al-SiC composites. All of volume fraction of SiC on the Al/SiC composites, which oxide aluminum coating on SiC surface have highest value of elastic modulus than the others metal oxides.
KOMPAKTIBILITAS KOMPOSIT ISOTROPIK Al/Al2O3 DENGAN VARIABEL WAKTU TAHAN SINTER Widyastuti, Widyastuti; Siradj, Eddy S; Priadi, Dedi; Zulfia, Anne
Makara Journal of Science Vol. 11, No. 2
Publisher : UI Scholars Hub

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Abstract

Compactibility of Al/Al2O3 Isotropic Composite with Variation of Holding Time Sintering. The requirement of component with structural ability, light weight and also strength is increasing base on Metal Matrix Composites (MMCs) by aluminum as matrix (AMCs). A structural ability is connected to composites compactibility which is depend on quality of interfacial bounding. Powder metallurgy is one of method to produce composite with powder mixing, compacting and sintering. Volume fractions reinforced and sintering time can influence composites compactibility. Volume fractions reinforced variable can produce different reinforcement effect. Beside that, on sintering enables the formation of new phase during sintering time. In this research, Al/Al2O3 isotropic composites are made with aluminum as matrix and alumina (Al2O3) as reinforced. Volume fraction reinforced used 10%. 20%. 30% and 40%. Sintering temperature and compaction pressure are each 600o C and 15 kN. The tests that applied are compression and metallographic test. The result that obtained is optimum compactibility of Al/Al2O3 composite reached at holding time 2 hour. During sintering, new phase can occur that is aluminum oxides (alumina), with unstable properties. The best volume fraction reinforced and holding time sintering are 40% and 2 hours.
PENGARUH PELAPISAN PERMUKAAN PARTIKEL SiC DENGAN OKSIDA METAL TERHADAP MODULUS ELASTISITAS KOMPOSIT Al/SiC Zainuri, M; Siradj, Eddy S; Priadi, Dedi; Zulfia, Anne; Darminto, Darminto
Makara Journal of Science Vol. 11, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Influence of Coating Oxide Metal on Surface of SiC Particles to Elastic Modulus of Al/SiC Composites. The isotropic composites of Al/SiC is made by powder metallurgy method, the quality of mechanical materials depend on interfacial bonding between matrix (Al) and reinforcement (SiC). The quality of interfacial bonding can influence to elastic modulus of composites which is made by solid process. SiC particles were coated by metal oxide aim to enhance quality interfacial bonding between matrix and reinforcement. These research using three kinds of coating materials, which are Mg oxide, Cu oxide and Al oxide, and these materials were deposited on surface of SiC particles. From three kinds of materials coating Al2O3 is the best to enhance quality interfacial bonding between matrix and reinforce than the others as CuO or MgO. There is Intermetalic phase formatted on CuO coating, and MgO coating have many porous where they can make decrease quality of Al-SiC composites. All of volume fraction of SiC on the Al/SiC composites, which oxide aluminum coating on SiC surface have highest value of elastic modulus than the others metal oxides.
KOMPAKTIBILITAS KOMPOSIT ISOTROPIK Al/Al2O3 DENGAN VARIABEL WAKTU TAHAN SINTER Widyastuti, Widyastuti; Siradj, Eddy S; Priadi, Dedi; Zulfia, Anne
Makara Journal of Science Vol. 12, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Compactibility of Al/Al2O3 Isotropic Composite with Variation of Holding Time Sintering. The requirement of component with structural ability, light weight and also strength is increasing base on Metal Matrix Composites (MMCs) by aluminum as matrix (AMCs). A structural ability is connected to composites compactibility which is depend on quality of interfacial bounding. Powder metallurgy is one of method to produce composite with powder mixing, compacting and sintering. Volume fractions reinforced and sintering time can influence composites compactibility. Volume fractions reinforced variable can produce different reinforcement effect. Beside that, on sintering enables the formation of new phase during sintering time. In this research, Al/Al2O3 isotropic composites are made with aluminum as matrix and alumina (Al2O3) as reinforced. Volume fraction reinforced used 10%. 20%. 30% and 40%. Sintering temperature and compaction pressure are each 600o C and 15 kN. The tests that applied are compression and metallographic test. The result that obtained is optimum compactibility of Al/Al2O3 composite reached at holding time 2 hour. During sintering, new phase can occur that is aluminum oxides (alumina), with unstable properties. The best volume fraction reinforced and holding time sintering are 40% and 2 hours.
PENGARUH PELAPISAN PERMUKAAN PARTIKEL SiC DENGAN OKSIDA METAL TERHADAP MODULUS ELASTISITAS KOMPOSIT Al/SiC Zainuri, M; Siradj, Eddy S; Priadi, Dedi; Zulfia, Anne; Darminto, Darminto
Makara Journal of Science Vol. 12, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Influence of Coating Oxide Metal on Surface of SiC Particles to Elastic Modulus of Al/SiC Composites. The isotropic composites of Al/SiC is made by powder metallurgy method, the quality of mechanical materials depend on interfacial bonding between matrix (Al) and reinforcement (SiC). The quality of interfacial bonding can influence to elastic modulus of composites which is made by solid process. SiC particles were coated by metal oxide aim to enhance quality interfacial bonding between matrix and reinforcement. These research using three kinds of coating materials, which are Mg oxide, Cu oxide and Al oxide, and these materials were deposited on surface of SiC particles. From three kinds of materials coating Al2O3 is the best to enhance quality interfacial bonding between matrix and reinforce than the others as CuO or MgO. There is Intermetalic phase formatted on CuO coating, and MgO coating have many porous where they can make decrease quality of Al-SiC composites. All of volume fraction of SiC on the Al/SiC composites, which oxide aluminum coating on SiC surface have highest value of elastic modulus than the others metal oxides.
Co-Authors Alviana, Rifda Muthia Andi Muhdiar Kadir Andon Insani Anne Zulfia Anwar, M Syaiful Aristotika, Addin Bambang Prihandoko Chris Marvin Darminto . Dedi Supriadi Efendi Mabruri Erie Martides Erwin Siahaan Fatriansyah, Jaka Fajar Hadi Suwarno harkali setiyono harkali setiyono Hasanudin, Agus Mulyadi Iman, Fauzul Ismadi, Sabandi Iwan Setyadi Johny Wahyuadi Soedarsono Julyadi Julyadi Kadir, Andi Muhdiar M. Kadir, Andi M. Kadir, Andi Mabruri, Efendi Mayang Gita Pradisti Miftakhur Rohmah, Miftakhur Moch. Syaiful Anwar Muhammad Anis, Muhammad Myrna Ariati, Myrna Pratama, Fikri Wahyu Priyo Sardjono Rahman, Okky Helja Octora Syahida Ridwan Setiawan Riyan Sanjaya Romijarso, Toni Bambang S, Harkali S, Harkali Sahari, G.N. Anastasia Septian Adi Candra Simeon, Rony Prayitno Sobron Yamin Lubis Suryadi Suryadi Tedi Kurniawan Trahmawan, Sigit Widyastuti Widyastuti Winarto Winarto Wisnu Ari Adi Zainuri, M