銅鐵礦燒結體、其製造方法及其應用DELAFOSSITE SINTERED BODY, METHOD FOR PRODUCING THE SAME AND USES THEREOF

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

102128928

專利證號

I 538894

專利獲證名稱

銅鐵礦燒結體、其製造方法及其應用DELAFOSSITE SINTERED BODY, METHOD FOR PRODUCING THE SAME AND USES THEREOF

專利所屬機關 (申請機關)

國立成功大學

獲證日期

2016/06/21

技術說明

CuMnO2銅鐵礦為具有超晶格層狀結構之ABO2型氧化物，此層狀結構有助於散射聲子而降低熱導，並且具有較高的電導值和seebeck係數及較低的熱導值，可應用為熱電模組之熱電材料。但在Cu-Mn-O的相圖裡，CuMnO2存在的範圍非常窄，須兼具組成配比及氧分壓的嚴謹控制。本發明提出能穩定合成CuMnO2粉末與摻雜異價元素的CuMn1-xExO2粉末之方法，且再使之燒結成緻密燒結體(塊材)的方法。該CuMn1.143O2燒結體的電導值和Seebeck係數，分別為0.04588 S/cm和477 μV/K，可做為陶瓷的熱電材料。 CuMnO2 delafossite with superlattice layer structure which aid to scatters phonon then decreases thermal conductivity, and possesses higher electrical conductivity, seebeck coefficient and lower thermal conductivity, can be used as thermoelectric materials. However, CuMnO2 shown in Cu-Mn-O phase diagrams is difficult to synthesis, because it must simultaneously control the oxygen partial pressure (PO2) atmosphere and composition in narrow range. This invent proposes methods which could synthesize CuMnO2 and CuMn1-xExO2 powders stably and could form dense sintered bodies (bulk). The electrical conductivity and Seebeck coefficient of CuMn1.143O2 sintered body were 0.04588 S/cm and 477 μV/K separately which can be used as ceramic thermoelectric materials.

備註

本部(收文號1080023237)同意該校108年4月10日成大研總字第1081102863號函申請終止維護專利

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