本文選題：SiC粉體　切入點(diǎn)：卡爾費(fèi)休微量水分測(cè)定儀　出處：《硅酸鹽通報(bào)》2016年05期

【摘要】：本文建立了一種對(duì)SiC表面羥基濃度定量檢測(cè)的方法,利用卡爾費(fèi)休微量水分測(cè)定儀直接測(cè)量出SiC表面羥基濃度。經(jīng)計(jì)算,本方法 RSD為3.8%,對(duì)于SiC粉體表面羥基濃度測(cè)定能夠得到滿意的結(jié)果。通過(guò)X射線能譜儀(EDS)進(jìn)行表面元素分析,表明酸堿處理使SiC粉體表面碳硅比趨向于符合化學(xué)式的1∶1。測(cè)量相同固相含量的SiC漿料粘度,數(shù)據(jù)表明經(jīng)過(guò)酸堿處理過(guò)的SiC粉體使相同固相含量的漿料粘度降低。改變漿料的pH值可改變其粘度,找到了使SiC粉體流變性能最適宜的pH值。
[Abstract]:In this paper, a quantitative method for the determination of surface hydroxyl groups in SiC was established. The surface hydroxyl concentration of SiC was measured directly by using the Karl Fischer micro moisture analyzer.By calculation, the RSD of this method is 3.8 and satisfactory results can be obtained for the determination of hydroxyl concentration on the surface of SiC powder.The surface elemental analysis by X-ray energy dispersive spectrometer (EDS) shows that the surface carbon / silicon ratio of SiC powder tends to 1: 1 with acid-base treatment.The viscosity of SiC slurry with the same solid content was measured. The data showed that the viscosity of SiC powder treated with acid and alkali decreased the viscosity of the slurry with the same solid content.The viscosity of SiC powder can be changed by changing the pH value of the slurry. The optimum pH value for the rheological properties of SiC powder is found.
【作者單位】： 煙臺(tái)大學(xué)化學(xué)化工學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(51472212)
【分類號(hào)】：TQ163.4
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本文編號(hào)：1695102