本文選題：α-AlO陶瓷支撐體 + 單管式��； 參考：《粉末冶金材料科學(xué)與工程》2016年01期

【摘要】：以α-Al2O3為骨料、羧甲基纖維素為造孔劑和粘結(jié)劑、Cu O-Ti O2為燒結(jié)助劑制備單管式氧化鋁陶瓷支撐體,對支撐體孔隙率與抗折強(qiáng)度進(jìn)行測試,并用X線衍射儀(XRD)和掃描電鏡(SEM)對支撐體的物相與微觀結(jié)構(gòu)進(jìn)行分析與觀察,研究升溫速率、保溫時間和燒結(jié)溫度等燒結(jié)工藝參數(shù)對支撐體性能的影響。結(jié)果表明:在高溫?zé)Y(jié)過程中形成Al2Ti O5、尖晶石型Cu Al2O4和銅鐵礦型Cu Al O2,可促進(jìn)燒結(jié),其中Al2O3與Ti O2之間發(fā)生固溶反應(yīng)形成Al2Ti O5相起主導(dǎo)作用;在30~200,200~350,350~800,800~1 200℃這4個溫度范圍內(nèi),分別以12,6,12和4℃/min的升溫速率勻速升溫,并在350和1 200℃分別保溫0.5和2 h,最后隨爐冷卻,制得的支撐體具有良好的孔隙率、抗折強(qiáng)度和微觀結(jié)構(gòu),孔隙率達(dá)到30.98%,抗折強(qiáng)度為104.88 MPa。
[Abstract]:Single tube alumina ceramic support was prepared by using 偽 -Al _ 2O _ 3 as aggregate, carboxymethyl cellulose as pore-making agent and binder CuO-TiO _ 2 as sintering assistant. The porosity and flexural strength of the support were measured. The phase and microstructure of the support were analyzed and observed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effects of sintering process parameters such as heating rate, holding time and sintering temperature on the properties of the support were studied. The results show that Al _ 2TiO _ 5, Cu Al _ 2O _ 4 spinel and Cu Al _ 2O _ 2 can promote sintering during high temperature sintering, in which Al _ 2TiO _ 5 phase is formed by solid solution reaction between Al _ 2O _ 3 and TIO _ 2, and in the temperature range of 350350800 鈩，

本文編號：2080777