臺灣博碩士論文加值系統

Barium Hexaferrite doped by additive MnCO3, CuO, TiO2(0,1,3,5%wt) have been investigated by the usual ceramic sintering method. The preparation is carried out by solid state reaction that corresponds to milling, calcinations and sintering. The precursor BaCO3 and Fe2O3 were mixed and milled for 24 hours using wet milling. Samples were calcined at 10000C for 2 hours with increment 100C/minute. XRD result showed BaFe12O19 phase. BaFe12O19 powder were mixed with additive MnCO3, CuO, TiO2(0,1,3,5%wt). Samples were milled at 0,24,48 hours and pressed by 50 Kg/cm2 for pellet shaped and sintered at temperature 9000C,10000C,11000C for 2. Result shows Bulk Density obtained 4.41 gram/cm3The sample magnetic properties was measured using VSM. The results showed that remanence and energy product decrease as additive value increase.
Keywords: Barium Ferrite,Sintering,Hysterysis curve,Magnetic,additive

TABLE OF CONTENTS




Page
Abstract IV
Acknowledgements V
Table of Contents VI
List of Tables IX
list of Figures X
Chapter 1 Introduction
1.1. Introduction 1
1.2. Problem Formulation 2
1.3. Scope of problem 2
1.4. Research purposes 3
1.5. Benefits of research 3
Chapter 2. Literature Review
2.1. barium Ferrite 4
2.1.1. Barium crystal lattice Heksaferit 4
2.1.2. Nature of Barium Magnet Hexaferrite 5
2.1.3. Magnetic properties of Barium Hexaferrite 6
2.2. PVA 9
2.3. Definition Magnet 10
2.3.1. Magnetic field 11

 
2.3.2. Magnetic moment 11
2.3.3. Magnetic induction 12
2.3.4. Strong Magnetic Field 12
2.3.5. Intensity Magnetism 12
2.3.6. Types of Magnet 13
2.3.7. Attributes Permanent Magnet 14
2.3.7.1. coercivity 14
2.3.7.2. Remanent / Ketertambatan 15
2.3.7.3. saturation magnetization 15
2.3.7.4. Anisotropy 16
2.3.7.5. Curie temperature 18
2.3.8. Magnetic materials 18
2.3.8.1. diamagnetic 19
2.3.8.2. paramagnetic material 19
2.3.8.2. ferromagnetic materials 20
2.4. Magnet Material Soft and Hard 22
2.5. Type Permanent Magnet 23
2.5. Sintering process 24
2.5.1. Phase Sintering stages 25
2.5.2. Classification of Sintering 27
2.5.3. Effect Against Sintering Properties Sample 28
2.6. Characterization and Evaluation of Permanent Magnet 29
2.6.1. Test-Ray Diffraction - X (XRD) 29
2.6.2. Scanning Electron Microscope (SEM) 31
2.6.3. Permagraph 32
2.6.4. Density test 33
CHAPTER 3. Research Methodology
3.1. Equipment and Materials 34
3.1.1. Equipment 34
3.1.2. material 36
3.2. Flowchart of Research 37
3.3. Research procedure 39
3.3.1. Mixing of Raw Materials 39
3.3.2. The process of compacting 39
3.3.3. sintering process 40
3.3.4. magnetization 40
3.4. Characterization 40
3.4.1. Characteristics of Physical Properties 40
3.4.1.1. Bulk Density 40
3.5.1.2. Microstructure 41
3.4.2 Characterization of magnetic Properties 41
Chapter 4. Data and Analysis
4.1. Characterization of Physical Properties 42
4.1.1 Particle size distribution 42
4.1.2. Green Body Density 46
4.1.3.Bulk Density 47
4.1.3.1 Bulk Density (ρ) Vs Additive (wt%) at Temperature 9000C 48
4.1.3.2 Bulk Density (ρ) Vs Additive (wt%) at Temperature 10000C 49
4.1.3.3 Bulk Density (ρ) Vs Additive (wt%) at Temperature 11000C 51
4.1.4 X-Ray Diffraction Characterization 53
4.2. Magnetic Properties 54
4.2.1. B-H curve of 0,1,3,5,wt% additive at Sintering Temperature 9000C 0H 54
4.2.2. B-H curve of 0,1,3,5,wt% additive at Sintering Temperature 11000C 0H 56
4.2.3. B-H curve of 0,1,3,5,wt% additive at Sintering Temperature 9000C 48H 57
4.2.4. B-H curve of 0,1,3,5,wt% additive at Sintering Temperature 11000C 48H 59
4.3. Microstructure Properties 61
4.3.1.Scanning Electron Microscope Results at T=9000C 61
4.3.2. Scanning Electron Microscope Results at T=9000C 62
4.3.3SEM Results (0%wt48H) 63
4.3.4. SEM Results (5%wt48H) 63
4.3.5. SEM Results (0%wt0H) 64
4.3.6.SEM Results (5%wt0H) 64
Chapter 5. Conclusions
5.1. Conclusions 65
Chapter 6.References 66

CHAPTER 6 REFERENCES
[1] Moulson, AJ, and Herbert, JM 1999. Electroceramics: Materials, Properties and Applications. Chapman and Hall, New York.
[2] Smith and Wijn. 1959. Physical Properties of Ferrimagnetic Oxides in Relation to Their Technical Application. Philips Researc, Netherland.
[3] Snoek, JL1947.New Development in Ferromagnetics Materials. New York
[4] Alexandre, R., Buenoa, Maria, L., Gregorib, Maria CS 2008. No' Bregac.Journal of Magnetism and Magnetic Materials. 320: 864-870
[5] Sudirman, Ridwan, Mujamilah, S., Budiman and daughter, FE 2002.Studi Elastoferit based Ethyl Vinyl Acetate (EVA) and Thermoplastic Elastomer (ETP) and the Mechanical Properties Testing, microstructure and Materials Science Magnetic. Indonesian Journal Vol.3 No. 2. Tangerang: Center for Materials Science (P3IB) Batan.
[6] Idayanti, N., and Dedi. 2002. Preparation of Ferrite Permanent Magnets for flowmeter. Journal of Physics HFI. A5 No.0528 Vol. Tangerang: Indonesian Physics Association.
[7] Priyono., Yuli, A., Happy, T. and Ainie Khuriati, RS 2004. Effect of Al 2O3 additive Against Physical Structures and Properties of Permanent Magnet BaO.6 (Fe2O3). Periodic Journal of Physics. Vol. 7 No. 2: 69-73.
[8] Tang, X. 2005.Influence of Synthesis Variables on The Phase Component and Magnetic Properties of M-Baferrite Powders Prepared Via Sugar-Nitrates Process.Journal of Material Science.ISSN 0022-2461.
[9] Yamauchi, T., Tsukahara,Y., Sakata, T., Mori, H., Chikata, T., Katih, S., Wada, Y. 2009. Barium Ferrite Powder Preparet By Microwave-Indu Ced Hydrothermal Reaction And Madnet Ic Property. Juornal Of Magnetism and Magnetic Material: Elsevier.
[10] Akmal Johan. 2010. Analysis of Nanocrystalline Barium Heksaferit Magnet Materials (BaO • 6Fe2O3) Using High-Energy Milling. Science Research Journal. Volume 14, Number 1 (B): 14 105.
[11] Ayu, YS, Perdamean, S., danMuljadi. 2012. Preparation and Characterization of Bonded Magnet BaO.6Fe2O3Varying Particle Size. Journal of Materials Science LIPI Indonesia Accreditation Number: 395 / D / 2012. Vol. 13, No. 3: 168-172.
[12] Young Joon An, Ken Nishida, Takashi Yamamoto, Shunkichi Ueda and Takeshi Deguchi, 2008, Characteristic Evaluations of Microwave Absorbers Using Dielectric and Magnetic Composite Materials.Journal of Ceramic Processing Research.Vol. 9, 430-436.
[13] Sharma, Puneet et.al. (2008). Structural, Mössbauer and magnetic studied on Mn-substituted barium hexaferrites prepared by high energi ball milling. Hyperfine Interact 175, 77-84
[14] R. Nowosielski, R. Babilas, G. Dercz, L. Tax, J. Wrona. 2007. Structure and Properties of Barium Ferrite Powders Prepared by Milling and Annealing. Archives of Materials Science and Engineering, Vol 28, Issue 12, p 735-742.
[15] Darminto, M. ZAINURI, El Indahnia Kamariyah 2011, Barium Powder Synthesis Heksaferit By Coprecipitation Method. National Graduate Seminar XI- ITS, Surabaya, July 27th 2011, the Department of Physics.
[16] Halliday and Resnick. 1989. Physics.: Erland
[17] Masno, G., Muljadi, and Perdamean, S. 2006.Pembuatan Based Permanent Magnet Isotropic Nd-Fe-B and Properties. Indonesian Technology. Volume 29 No. 1: 27-30.
[18] German, Randall M., Powder Metallurgy Science, Metal Powder Industries Federation, Princeton, New Jersey. 1984.
[19] Vlack, Lawrence H. Van. 2004. Elements of Material Science and Engineering. Translated by Sriati Djaprie. Jakarta: Erlangga
[20] M M, Ristic. 1979. Influence Of Syntesis Variables On The Phase Component And Magnetic Properties Of M-Baferrite Powder Prepared Via SugarNitrates Process. Journal of Apllied Crystalography. ISSN 0021-8898.
[21] Arie Fiandimas and Azwar Manaf. 2003. Manufacture of Barium Hexaferrite Permanent Magnets Made from Mill Scale with Powder Metallurgy Technique. Vol.5
[22] Effendi, H. 2003. Review of Water Quality for Management of Aquatic Resources and Environment. Fifth print. Yogyakarta: Kanisius.