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Maulid Purnawan
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Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Materials Science & Nanotechnology

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Density and Magnetic Properties of Barium Ferrite from BaFe12O19 Nanoparticles Prepared by Microemulsion Method Handoko Setyo Kuncoro; Naniek Sulistarihani; Ria Julyana Manullang; Maulid Purnawan; Ratih Resti Astari
Jurnal Keramik dan Gelas Indonesia Vol 24, No 2 (2015): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (756.439 KB) | DOI: 10.32537/jkgi.v24i2.2339

Abstract

The density and magnetic properties of barium ferrite from BaFe12O19 Nanoparticles prepared by microemulsion method have been studied by comparing with the properties of micro-scaled BaFe12O19 prepared by metallurgical method. The preceding preparation consists of emulsification process, mixing, aging, centrifuging/separation, drying, grinding, and calcination at temperature of 900 oC, which brings on  the BaFe12O19 nanoparticles powder as its final product. Then, the obtained powders have been formed at compaction pressure of 200 Kg/cm2 and sintered at temperature of 1100 oC. The indications of formed BaFe12O19 nanoparticles have been confirmed via XRD and TEM testings which their dimension sizes are under 100 nm. Based on density measurements, the density of barium ferrite prepared by microemulsion method is higher than that of by metalurgical method (i.e. 5,3 gr/ml). While, the permagraph examinations have indicated that both remanence magnetic induction (2.49 kOe) and maximum energy product values (0.47 MGOe) of barium ferrite prepared by microemulsion method are higher about 1.22 and 1.47 times, respectively.
Fabrication of Cordierite Ceramic Foam Filter by Replication Method Ria Julyana Manullang; Maulid purnawan; Dede Taufik; Ayu Ratnasari; Karlina Noordiningsih
Jurnal Keramik dan Gelas Indonesia Vol 30, No 1 (2021): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v30i1.6855

Abstract

Ceramic foam filter (CFF) is widely used to improve the   quality   of   molten   metal   prior   to   casting. Cordierite  is  one  of  the  most  commonly  used materials  for making CFF. In this  research,  the fabrication of cordierite-based   CFF   by   a   replication   method   using   a polyurethane template has been studied. Waterglass and polymethacrylic acid (PMAA) were used as defloculants to synthesize ceramic  suspensions. CFF was made from kaolin, talc, alumina with a defloculant concentration of 0.3% which is sintered at a temperature of 1300 - 1350oC. The experimental results  showed that the porosity obtained for all CFF samples were  above  70%.  The  best  shape  of  CFF  was  obtained  by using PMAA as  defloculant. However, CFF did not reach the maximum  strength yet so it is necessary to carry out further research on the CFF body composition.
Density and Magnetic Properties of Barium Ferrite from BaFe12O19 Nanoparticles Prepared by Microemulsion Method Handoko Setyo Kuncoro; Naniek Sulistarihani; Ria Julyana Manullang; Maulid Purnawan; Ratih Resti Astari
Jurnal Keramik dan Gelas Indonesia Vol 24, No 2 (2015): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v24i2.2339

Abstract

The density and magnetic properties of barium ferrite from BaFe12O19 Nanoparticles prepared by microemulsion method have been studied by comparing with the properties of micro-scaled BaFe12O19 prepared by metallurgical method. The preceding preparation consists of emulsification process, mixing, aging, centrifuging/separation, drying, grinding, and calcination at temperature of 900 oC, which brings on  the BaFe12O19 nanoparticles powder as its final product. Then, the obtained powders have been formed at compaction pressure of 200 Kg/cm2 and sintered at temperature of 1100 oC. The indications of formed BaFe12O19 nanoparticles have been confirmed via XRD and TEM testings which their dimension sizes are under 100 nm. Based on density measurements, the density of barium ferrite prepared by microemulsion method is higher than that of by metalurgical method (i.e. 5,3 gr/ml). While, the permagraph examinations have indicated that both remanence magnetic induction (2.49 kOe) and maximum energy product values (0.47 MGOe) of barium ferrite prepared by microemulsion method are higher about 1.22 and 1.47 times, respectively.
Fabrication of Cordierite Ceramic Foam Filter by Replication Method Ria Julyana Manullang; Maulid purnawan; Dede Taufik; Ayu Ratnasari; Karlina Noordiningsih
Jurnal Keramik dan Gelas Indonesia Vol 30, No 1 (2021): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v30i1.6855

Abstract

Ceramic foam filter (CFF) is widely used to improve the   quality   of   molten   metal   prior   to   casting. Cordierite  is  one  of  the  most  commonly  used materials  for making CFF. In this  research,  the fabrication of cordierite-based   CFF   by   a   replication   method   using   a polyurethane template has been studied. Waterglass and polymethacrylic acid (PMAA) were used as defloculants to synthesize ceramic  suspensions. CFF was made from kaolin, talc, alumina with a defloculant concentration of 0.3% which is sintered at a temperature of 1300 - 1350oC. The experimental results  showed that the porosity obtained for all CFF samples were  above  70%.  The  best  shape  of  CFF  was  obtained  by using PMAA as  defloculant. However, CFF did not reach the maximum  strength yet so it is necessary to carry out further research on the CFF body composition.
Co-Authors Ayu Ratnasari Dede Taufik Handoko Setyo Kuncoro Karlina Noordiningsih Naniek Sulistarihani Ratih Resti Astari Ria Julyana Manullang Ria Julyana Manullang