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研究生：	王瑋南 Manurung, Trisno Fernando
論文名稱：	氧化銅，氧化鈦與碳酸錳添加對六角鐵鋇物理性質，微觀結構和磁性的影響 Effect of (CuO,TiO2,MnCO3) Additive to Physical,Microstructure and Magnetic Properties of Barium Hexaferrite
指導教授：	李文熙 Lee, Wen-Shi
學位類別：	碩士 Master
系所名稱：	電機資訊學院 - 電機工程學系 Department of Electrical Engineering
論文出版年：	2019
畢業學年度：	107
語文別：	英文
論文頁數：	70
外文關鍵詞：	Barium Ferrite, Sintering, Hysterysis curve, Magnetic, additive
相關次數：	點閱：69 下載：4
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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. Introduction	1
2.	Problem Formulation	2
3.	Scope of problem	2
4.	Research purposes	3
5.	Benefits of research	3
Chapter 2. Literature Review	
1.	barium Ferrite	4
1.1. Barium crystal lattice Heksaferit	4
1.2. Nature of  Barium Magnet Hexaferrite	    5
1.3. Magnetic properties of Barium Hexaferrite	    6
2. PVA	9
3.	Definition Magnet	   10
3.1. Magnetic field	11

 
3.2. Magnetic moment	11
3.3. Magnetic induction	12
3.4. Strong Magnetic Field	12
3.5.  Intensity Magnetism	12
3.6. Types of Magnet	13
3.7. Attributes Permanent Magnet	14
3.7.1. coercivity	14
3.7.2. Remanent / Ketertambatan	15
3.7.3. saturation magnetization	15
3.7.4. Anisotropy 	16
3.7.5. Curie temperature	18
3.8. Magnetic materials	18
3.8.1. diamagnetic 	19
3.8.2. paramagnetic material	19
3.8.2. ferromagnetic materials	20
4. Magnet Material Soft and Hard	22
5. Type Permanent Magnet	23
5. Sintering process	24
5.1.  Phase Sintering stages	25
5.2. Classification of Sintering	27
5.3. Effect Against Sintering Properties Sample	28
6. Characterization and Evaluation of Permanent Magnet	29
6.1. Test-Ray Diffraction - X (XRD)	29
6.2. Scanning Electron Microscope (SEM)	31
6.3. Permagraph	32
6.4. Density test	33
CHAPTER 3. Research Methodology	
1. Equipment and Materials	34
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
4. Characterization		40
4.1. Characteristics of Physical Properties		40
4.1.1. Bulk Density		40
5.1.2. Microstructure				41
4.2 Characterization of magnetic Properties 		41
Chapter 4. Data and Analysis		
1. Characterization of Physical Properties		42
1.1 Particle size distribution		42
1.2. Green Body Density		46
1.3.Bulk Density 	47
1.3.1 Bulk Density (ρ) Vs Additive (wt%) at Temperature 9000C	48
1.3.2 Bulk Density (ρ) Vs Additive (wt%) at Temperature 10000C	49
1.3.3 Bulk Density (ρ) Vs Additive (wt%) at Temperature 11000C	51
1.4 X-Ray Diffraction Characterization	53
2. Magnetic Properties		54
2.1. B-H curve of 0,1,3,5,wt% additive at Sintering Temperature 9000C 0H		54
2.2. B-H curve of 0,1,3,5,wt% additive at Sintering Temperature 11000C 0H		56
2.3. B-H curve of 0,1,3,5,wt% additive at Sintering Temperature 9000C 48H		57
2.4. B-H curve of 0,1,3,5,wt% additive at Sintering Temperature 11000C 48H		59
3. Microstructure Properties		61
3.1.Scanning Electron Microscope Results at T=9000C		61
3.2. Scanning Electron Microscope Results at T=9000C		62
3.3SEM Results (0%wt48H)		63
3.4. SEM Results (5%wt48H)		63
3.5. SEM Results (0%wt0H)		64
3.6.SEM Results (5%wt0H)		64
Chapter 5. Conclusions 		
1. Conclusions 		65
Chapter 6.References		66
                                    

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