長久以來，癌症的高致死率與高復發率一直是困擾著社會大眾以及醫療團隊的一大問題，電磁熱療法(Electromagnetic thermotherapy)有著短恢復期及微小傷口的優點，為現今新興的腫瘤(tumor)治療方式之一，其給予高頻的電流所產生的磁場來加熱軟磁性材料，藉此來殺死癌症或腫瘤細胞。過去許多研究是使用特殊藥物包覆軟磁物質的奈米顆粒，使其吸附在癌細胞的周圍來達到加熱的效果，但使用奈米顆粒的缺點是感磁質量太小，所能產生的熱量較少，無法達到所需的溫度。
最近的研究中有人利用不鏽鋼針具代替奈米軟磁顆粒作為感磁物質，來解決在磁場下加熱能力不足的問題，而本研究將會以此為基礎，使用鐵基金屬玻璃Fe-(B10-xCx)-Y-Nb來做為針具前端的感磁材料，希望可以增強其在磁場下的加熱能力。鐵基金屬玻璃具有良好的軟磁性、機械性質以及抗腐蝕性，符合電磁熱療系統之針具所需條件，實驗將探討鐵基金屬玻璃成分改質，了解碳成分對磁性質之影響。
為了解鐵基金屬玻璃Fe-(B10-xCx)-Y-Nb在磁場下的性質，我們將進行材料的電磁加熱實驗、電磁性質與微結構等分析，來對照試片在磁場下的升溫能力。隨著碳成分的添加，在微結構方面其對結晶棒材的晶粒有細化的影響；而在電磁性質方面，隨著碳成分的添加，試片的電阻由3.9×10-4ohm-cm下降至3×10-4ohm-cm，有較高的渦電流損；隨著碳成分的添加，試片的殘留磁力由987Oe上升至約1100Oe，有較高的磁滯損，因此添加碳可提升試片在磁場下的升溫能力。在同樣的電磁爐磁場加熱下，試片可從未添加碳(X=0)的44˚C提升至添加碳X=4的60˚C。

另外，對試片進行熱處理，也有助於磁場下加熱溫度的提升。試片X=2未熱處理前電阻由原本的3.9×10-4ohm-cm下降至7×10-5ohm-cm，有較高的渦電流損；隨著熱處理time加，試片的殘留磁力由1093Oe上升至約1862Oe，有較高的磁滯損，因此熱處理可提升試片在磁場下的升溫能力。試片X=2未熱處理可從原本的56˚C提升至熱處理10hr的75˚C。
此外，我們也發現利用家用電磁爐(20kHz、35Oe)進行電磁加熱實驗，可得到與高週波機台(60kHz、350Oe)下相同趨勢的結果，因此可利用家用電磁爐來取代高週波機台進行快速的定性實驗，以利於未來嘗試不同製程及不同材料的鑑定。

Electromagnetic thermotherapy is a new modality for tumor treatment. It applies a magnetic field and heat up magnetic materials for treating targeted tumors. In this study, the iron-based metallic glass, Fe-(B10-xCx)-Y-Nb, was used for enhancing the heating capacity in electromagnetic thermotherapy. Iron-based metallic glass has good soft magnetization, mechanical properties and corrosion resistance for electromagnetic thermotherapy. This study will focus on the components modified of iron-based metallic glass to investigate the effects of carbon on magnetic properties. With the addition of carbon, the grains of Fe-(B10-xCx)-Y-Nb bars were refined and the eddy current loss increased. Therefore, the total core loss of Fe-(B10-xCx)-Y-Nb increased with the addition of carbon and thus the heating capacity of Fe-(B10-xCx)-Y-Nb can be enhanced.

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