製作磁性元件時常需使用到磁性印刷膏，其主要由磁性粉末及有機載體所組成。而球型磁性粉末具有良好的堆積密度與流動特性，將有利於印刷膏之製作及元件性能之提升，因此本研究以微乳化法製備球型粉末，探討不同製程參數對造粒後鎳銅鋅鐵氧磁體粉末外型、粒徑分佈之影響，並研究球型粉末對黏度、固含量與電性之影響。
研究中發現，界面活性劑的添加順序、界面活性劑的種類與油的種類皆是影響粉末形狀、粒徑大小及分佈的原因；界面活性劑的添加量及轉子轉速與成型後的粒徑大小相關，當轉速提高，或著界面活性劑添加量越多時，粒徑會漸趨變小。
另外，黏度的變化與粒徑大小有較大的關聯性，但由研究中可看出球型粉末的流動性較不規則粉末好，而最大固含量則與粉末粒徑大小相關，與形狀無太大關聯性；磁性與粉末燒結前後的緻密度有較大關係，但同時也會因為粉末堆積狀況的好壞而有些許的差異性。

The magnetic printing paste composed of the magnetic powder and organic carrier is often used to make magnetic components. The spherical magnetic powder has good packing density and flow characteristics, which will be beneficial to the production of printing paste and enhance device performance. In this study, the micro-emulsion method was used to prepare spherical magnetic powders, and the effects of different process parameters on the morphology and particle size distribution of the granulated Ni-Cu-Zn ferrite powders were investigated. Moreover, the effects of the morphology and solid content of the NiCuZn ferrite powders on the viscosity of the ferrite-epoxy resin pastes and the electrical properties of the ferrite-epoxy composites were also studied.
The results showed that the adding sequence of the surfactant, the types of the surfactant and oil were all the main parameters to affect the morphology and particle size distribution. The particle size is dependent on the addition of the surfactant and the stirring speed. The particle size decreased with increasing the speed and the addition of surfactant.
In addition, the viscosities of the ferrite-epoxy resin pastes were related to the particle size and morphology. The flowability of the spherical powder was better than that of the irregular powder; the maximum solid loading was affected by the particle size. The magnetic properties of the ferrite-epoxy composites were related to the packing density.

(1)Beebhas C. Mutsuddy and Renée G. Ford., “Ceramic injection molding”, Chapman & Hall, 1995.
(2)山口喬，柳田博明，剛本祥一，近桂一郎，「磁性陶瓷」，黃忠良譯，復漢出版社，2001。
(3)王志方， LTCC 產業概況，IBT 台灣工商銀行研究中心，2008。
(4)姚壬謙，化學共沉法製備Co2Z 鐵氧磁體粉末之生成機構研究，國立成功大學資源工程研究所，碩士論文，2004。
(5)M. D. Kingery, D.R. Uhlmann, et al, “Introduction to ceramics,” 2nd Edition, John Wiley & Sons, New York, 1976.
(6)金重勳，「磁性技術手冊」，中華民國磁性技術協會，2002。
(7)劉向春，ZnO-TiO2系介電陶瓷/NiCuZn鐵氧磁體疊層低溫共燒兼容特性研究，西北工業大學，博士論文，2006。
(8)林瑞霖，鎳銅鋅鐵氧磁體-六方晶系鐵氧磁體複合材料之燒結行為與磁性質之研究，國立成功大學資源工程學系，碩士論文，2013。
(9)林清文，界面活性劑與紡織工業應用，台灣區絲織工業同業公會，2004。
(10)劉硯鳴，利用微乳膠法添加(Eu, Tb, Al)於球形SiO2研究製程及螢光行為，國立成功大學資源工程學系，碩士論文，2011。
(11)陳怡君，土壤對 Triton系列各EO鏈選擇性吸附之研究，國立中興大學環 境工程學系，碩士班，2001。
(12)刈米孝夫，界面活性劑的原理與選用，高立圖書有限公司，2007。
(13)Sun Ki Hong, Mi Young Yoon, Hae Jin Hwang, “Synthesis of spherical silica aerogel powder by emulsion polymerization technique”, Journal of Ceramic Processing Reserch, 13(1), 145-148, 2012.
(14)Wunwisa Krasaekoopt, Bhesh Bhandari, Hilton Deeth, “Evaluation of encapsulation techniques of probiotics for yoghurt”, International Dairy Journal, 13(1), 3-13, 2003.
(15)Lu Ren, “Production of Alginate Beads, Massey University, Auckland”, New Zealand, 2008.
(16)Rico F. Tabor, Julian Eastoe, Peter J. Dowding, Isabelle Grillo, Richard K. Heenan, Martin Hollamby, “Formation of Surfactant-Stabilized Silica Organosols”, Langmuir, 24(22), 12793-12797, 2008.
(17)Christophe J. Barbe´, Linggen Kong, Kim S. Finnie, Sandrine Calleja, John V. Hanna, Elizabeth Drabarek, David T. Cassidy, Mark G. Blackford, “Sol–gel matrices for controlled release: from macro to nano using emulsion polymerization”, Journal of Sol-Gel Science and Technology, 46(3), 393-409, 2008.
(18)Miguel Jafelicci Jr., Marian Rosaly Davolos, Francisco Jose dos Santos,Sandro Jose de Andrade, “Hollow silica particles from microemulsion”, Journal of Non-Crystalline Solids, 247(1-3), 98-102, 1999.
(19)M.S. KIM, S.I. SEOK, B.Y. AHN, S.M. KOO, S.U. PAIK, “Encapsulation of Water-Soluble Dye in Spherical Sol-Gel Silica Matrices”, Journal of Sol-Gel Science and Technology, 27(3), 355-361, 2003.
(20)Chia-Lu Chang, H. Scott Fogler, “Controlled Formation of Silica Particles from Tetraethyl Orthosilicate in Nonionic Water-in-Oil Microemulsions”, Langmuir, 13(13), 3295-3307, 1997.
(21)Jana Vander Kloet, Laurier L. Schramm, “The Effect of Shear and Oil/Water Ratio on the Required Hydrophile-Lipophile Balance for Emulsification”, Journal of Surfactants and Detergents, 5(1), 19-24, 2002.
(22)劉士榮，高分子流變學，滄海書局，2005。
(23)M.N.Rahaman, “Ceramic. Processing”, CRC Press, 2006.
(24)林幸慧，以聚丙烯酸胺分散之次微米氧化鋁粉末的流變、注漿成形及燒結行為，國立成功大學資源工程學系，碩士論文，2009。
(25)Gebhard,S, “A Particle Approach to Rheology and Rheometry” Gebrueder HAAKE Gmbh, Germany, 13-22, 1994.
(26)鄭皓尹，晶片電感之端面銀漿研究，國立成功大學資源工程學系，碩士論文，2013。
(27)Qi, L., “Studt on Rheological Behavior of PP-fibred Material Containing Powdered Ceramic”, Polymer Materials Science and Engineering, 15 (4), 151-153, 1999.
(28)陳致宇，矽烷表面改質對二氧化矽奈米複合材料塗層性質之影響，國立成功大學資源工程學系，碩士論文，2005。
(29)C. E. Chaffey, “Mechanisms and equations for shear thinning and thickening in dispersions”, Colloid and Polymer Science, 255, 691-698, 1977.
(30)Robert J. Pugh, L. Bergstrom, “Surface and Colloid Chemistry in Advanced Ceramics Processing”, Marcel Dekker, 1994.
(31)Lawrenc E. Nielsen，流變學，復文書局，1987。
(32)蔡智堯，添加氧化鈷對銅鋅鐵氧磁體之微結構與電性影響之研究，國立成功大學資源工程學系，碩士論文，2013。
(33)柯文雄，晶片型電子陶瓷材料及元件技術，工業技術研究院，1993。
(34)呂秉軍，離子擴散對鎳銅鋅鐵氧磁體與硼鋁矽玻璃陶瓷共燒的影響，國立成功大學資源工程所，碩士論文，中華民國101年。
(35)S.S, “Basic Facts about Inductors [Lesson 4] Roles of Inductors - "Structure of Inductors" ”, Murata Manufacturing Co., 2011.
(36)Yasuhiro Mitsuya, “Basics of Noise Countermeasures [Lesson 6] Common mode choke coils”, Murata Manufacturing Co., 2011.
(37)國立編譯館、邱碧秀，電子陶瓷材料，徐氏基金會出版，1988。
(38)A.Einstein, “Investig of the Brownian movement”, Dover, New York, 1956.
(39)D. M. Liu, “Particle packing and rheological property of highly-concentrated ceramic suspension: m determination and viscosity prediction”, J. Mater. Sci., 35, 5503-5507, 2000.
(40)W.J. Tseng and F. Tzeng, “Effect of ammonium polyacrylate on dispersion and rheology of aqueous ITO nanoparticle colloids”, Colloids Surf. A, 276, 34-39, 2006.
(41)D. M. Liu, “Adsorption, rheology, packing and sintering of nanosize ceramic powders”, Ceramics International, 25, 107-113, 1999.