- 學位論文
不同鈍化製程對Fe-Si-Cr合金粉表面改質後之磁性質影響研究
Magnetic properties of Fe-Si-Cr alloy particle with surface modification by different passivation processes
摘要
本研究藉由捏合、攪拌和球磨三種不同的磷化製程，在合金粉表面上生成一層具有電氣絕緣效果的皮膜層，以維持基材的高磁通密度並降低能量轉換過程中的鐵損為本研究目標。使用L9正交實驗法去排出實驗參數表。透過SEM (Scanning Electron Microscopy) 觀察粉末的型貌。利用XRD (X-Ray Diffraction) 與VSM (Vibrating Sample Magnetometer) 可以觀察粉末在不同條件下的性質變化。使用油壓機在7 ton/cm2下將粉末成形環形磁芯，透過LCR量測儀測試其導磁率與品質因子變化。實驗結果顯示以攪拌方式所做的磷化處理性質較佳，其絕緣阻抗可達817.6 MΩ，而導磁率亦有29。經由SEM和EDS的分析可發現在合金粉表面上可成功披覆一層磷化絕緣膜。由FTIR測試可以分析出形成的為磷酸鐵絕緣膜。經由鹽霧測試、電性分析，可發現攪拌製程所做的磷化處理其性質較佳，捏合次之，球磨的性質最差。
並列摘要
The goals of this study are to achieve high magnetic fluxes and reduce total iron losses of alloy powders coated with insulated layers by using three different Phosphating process of kneading, stirring and ball milling. Setting up the parameters by L9 Orthogonal experiment. The microstructure is observed by SEM. The properties of alloy are observed by XRD and VSM at different experimental parameters. The hydraulic press can compress the powders into toroid cores at 7 ton/cm2. The Q (quality factor) and μi (permeability) are examined by LCR Meter. The results indicate that the compressed powder cores conform to the study goals as the best magnetic performances were achieved by using stirring process. The value of insulation resistance is 817.6 MΩ, and the value of initial permeability is 29. We can indicate that alloy powder had coated an insulating layer successfully by SEM and EDS analysis. With a phosphate treatment, the structure of the insulated layer coated on alloy particle surface was iron phosphate by FTIR examine . By salt spray testing, electrical analysis, can be found that phosphide stirring process is better than kneading, and the ball milling is the worst.
參考文獻
延伸閱讀
- Huang, L. C. (2014). 藉由RF磁控濺鍍探討鐵磁層溫度變化於鐵酸鉍(BiFeO3)/鐵白金(FePt)雙層磊晶薄膜系統對交換耦合偏壓之影響 [master's thesis, National Tsing Hua University]. Airiti Library. https://doi.org/10.6843/NTHU.2014.00163
- 陳適範、林新亮、王毓麟、陳貞光、林於隆、梁仕昌（2011）。Fe-Nb-B-Ta合金的非晶質形成能力及軟磁性質之研究。鑄造工程學刊，37(2)，35-44。https://doi.org/10.29809/JTFS.201106.0005
- 莊吳英匡（2020）。不同電磁鐵製程參數對於矽鋼片銹蝕性的影響研究〔碩士論文，健行科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0022-1307202015392500
- 張琦京（2010）。Investigation of magnetic for Fe ultrathin films on Ag-Pt(111) surface alloy〔碩士論文，國立臺灣師範大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0021-1610201315200852
- 陳俊明（2011）。The Crystallization and Magnetic Properties of (Fe0.95Mn0.05)75Si10B15 Amorphous Alloy〔碩士論文，國立臺北科技大學〕。華藝線上圖書館。https://doi.org/10.6841/NTUT.2011.00250