本文選題：W-Cu復合材料 + 共沉淀-氫氣還原法　； 參考：《熱加工工藝》2017年20期

【摘要】：為了提高車電極的導電性,探索一種共沉淀-氫氣還原法制備的車電極用W-Cu復合材料,并利用XRD、TEM等檢測手段,對制備新型W包覆Cu復合材料的微觀形貌進行了特性表征。結(jié)果表明:W-Cu復合粉體外形為球狀顆粒,平均粒徑約為2.5μm,主要由Cu WO_4H_2O與Cu_2WO_4(OH)_2組成,共沉淀產(chǎn)物并未完全晶化;沉淀物粉體形態(tài)表現(xiàn)為橢圓形的團聚狀態(tài),粒徑均勻,為8~15 nm,同時分散性較好。在750℃下經(jīng)氫還原處理后,材料顆�；径家砸�(guī)則橢圓形存在,其粒徑尺寸處于20~60 nm之間。WO3被還原為W原子并在Cu晶體表面形核,使Cu被全面包裹,形成各自單獨的包覆球結(jié)構(gòu)。
[Abstract]:In order to improve the electrical conductivity of vehicle electrode, a kind of W-Cu composite prepared by coprecipitation-hydrogen reduction method was explored. The micromorphology of W-Cu composite prepared by XRDX TEM was characterized. The results show that the composite powder is spherical in shape, and its average particle size is about 2.5 渭 m, which is mainly composed of CuWO _ 4H _ 2O and Cu _ W _ 2W _ 4 (OH) _ 2. The coprecipitation product is not completely crystallized, and the precipitate powder is characterized by elliptical agglomeration and uniform particle size. It is 815 nm, and the dispersity is good. After hydrogen reduction at 750 鈩，

本文編號：2102256