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研究生:高振傑
研究生(外文):Jeen-Chieh Kao
論文名稱:積層晶片電感材質之研究
論文名稱(外文):Ferrite Material for Multilayer Chip Inductor
指導教授:林和龍
指導教授(外文):Hur-Lon Lin
學位類別:碩士
校院名稱:大同工學院
系所名稱:材料工程研究所
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:1999
畢業學年度:87
語文別:英文
論文頁數:98
中文關鍵詞:積層晶片電感
外文關鍵詞:Multilayer Chip Inductor
相關次數:
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本研究以(NiCuZn)Fe2O4為主要成分,以不同之莫耳比配出三種組成,分別為Fe2O3:NiO:CuO:ZnO=0.4250:0.1493:0.0991:0.3266、0.5000:0.3100:0.0744:0.1157及0.5000:0.0800:0.1100:0.3100,經傳統之陶瓷製程後,以900及1150℃之溫度進行燒結,來瞭解其磁特性之變化情形。經實驗得知,(Ni0.16Cu0.22Zn0.62)Fe2O4組成有較高之μi值,且添加劑CuWO4、Li2WO4、Li2WO4-CuWO4之添加量增加時,對磁特性有負面的影響,以加入0.1wt%∼0.15wt%之燒結助劑為最佳。另外,組成之粉體平均粒度降低,亦有助於提升磁特性,且有最低之功率損失。而(Ni0.16Cu0.22Zn0.62)Fe2O4組成及加入添加劑時之居禮溫度Tc,在100℃∼110℃。

In this study, we are using (NiCuZn)Fe2O4 prepared by Fe2O3, NiO, CuO and ZnO with three different molar fraction, 0.4250:0.1493:0.0991:0.3266, 0.5000:0.3100:0.0744:0.1157, and 0.5000:0.0800:0.1100:0.3100 as our basic compositions and sintering at 900℃ and 1150℃ to see the changes of magnetic properties. From the results, we can see that the component of (Ni0.16Cu0.22Zn0.62)Fe2O4 has higher μi value and the Curie temperature Tc is about 100℃~110℃. As more additives, CuWO4, Li2WO4 and Li2WO4-CuWO4 doping into our basic compositions, the negative magnetic properties will increase. When the additives percentage is about 0.1wt%~0.15wt%, the sintering properties will increase. The other results that we want to discuss is the finer initial powder particle size we have the less power loss we get, and it also increases the magnetic properties clearly.

摘要
ABSTRACT
TABLE OF CONTENTS
LIST OF FIGURES
LIST OF TABLES
CHAPTER 1 INTRODUCTION
CHAPTER 2 LITERATURE SURVEY
2.1 CLASSIFICATIONS AND APPLICATIONS OF MAGNETIC
MATERIALS
2.1.1 CLASSIFICATIONS OF MAGNETIC MATERIALS
2.1.2 APPLICATIONS OF MAGNETIC MATERIALS
2.2 CRYSTAL STRUCTURE OF SPINEL
2.3 MAGNETIC SOURCES OF FERRITE
2.4 MAGNETIC ANISOTROPY
2.4.1 MAGNETOCRYSTALLINE ANISOTROPY
2.4.2 SHAPE ANISOTROPY
2.4.3 MAGNETOSTRICTION
2.4.4 STRESS ANISOTROPY
2.5 INITIAL PERMEABILITY
2.6 LOSS
2.6.1 HYSTERESIS LOSS
2.6.2 EDDY CURRENT LOSS
2.7 COMPOSITIONAL EFFECTS
2.7.1 EFFECT OF Fe2O3
2.7.2 EFFECT OF NiO
2.7.3 EFFECT OF ZnO
2.7.4 EFFECT OF CuO
2.8 MULTILAYER CHIP INDUCTOR
2.8.1 MATERIALS OF MULTILAYER CHIP INDUCTOR
2.8.2 APPLICATIONS OF MULTILAYER CHIP
INDUCTOR
2.8.3 PHYSICAL PROPERTIES OF MULTILAYER CHIP
INDUCTOR
CHAPTER 3 EXPERIMENTAL PROCEDURES
3.1 PREPARATION OF SPECIMEN
3.1.1 RAW MATERIALS AND ADDITIVIES
3.1.2 MIXING AND DRYING
3.1.3 CALCINATION
3.1.4 ATTRITION
3.1.5 ADDITIVIES AND PVA ADDING
3.1.6 GRANULATING
3.1.7 FORMING
3.1.8 DEGREASING
3.1.9 SINTERING
3.2 PHYSICAL PROPERTIES EXAMINATION
3.2.1 X-RAY DIFFRACTION EXAMINATION
3.2.2 INITIAL PERMEABILITY MEASUREMENT
3.2.3 CURIE TEMPERATURE MEASUREMENT
3.2.4 B-H CURVE MEASUREMENT
3.2.5 RESISTIVITY MEASUREMENT
3.2.6 MICROSTRUCTURE EXAMINATION
CHAPTER 4 RESULTS AND DISCUSSION
4.1 ANALYSIS OF LATTICE STRUCTURE
4.2 OBSERVATIONS OF MICROSTRUCTURE
4.2.1 ANALYSIS OF EDX
4.2.2 MORPHOLOGY BY SEM
4.2.3 METALLOGRAPHIC OBSERVATION BY OM
4.3 COMPARISIONS OF INITIAL PERMEABILITY
4.4 COMPARISIONS OF CURIE TEMPERATURE
4.5 D.C. MAGNETIC PROPERTIES
4.6 COMPARISIONS OF POWER LOSS
CHAPTER 5 CONCLUSIONS
REFERENCES

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