發(fā)布時間：2018-02-21 06:10

  本文關(guān)鍵詞： 堇青石 合成 礦化劑 非水解溶膠-凝膠法 低膨脹　出處：《中國陶瓷》2017年11期 　論文類型：期刊論文

【摘要】：在采用非水解溶膠-凝膠法合成堇青石粉體的基礎(chǔ)上,研究礦化劑對非水解溶膠-凝膠法合成堇青石粉體的影響。利用DTA-TG、XRD和FT-IR等測試手段研究了礦化劑種類對非水解溶膠-凝膠法合成堇青石粉體的影響,添加礦化劑條件下非水解溶膠-凝膠法合成堇青石粉體的相轉(zhuǎn)變過程,并對礦化劑的作用機制進行了初步探討。結(jié)果表明:添加礦化劑條件下,非水解溶膠-凝膠法制備的堇青石前驅(qū)體凝膠熱處理中的相轉(zhuǎn)變過程為:無定型堇青石于900℃開始直接轉(zhuǎn)變?yōu)棣?堇青石相。硼酸由于能增強了凝膠中的Mg-O-Al、Mg-O-Si和Al-O-Si鍵合,同時硼離子高溫下進入α-堇青石的晶格形成有限固溶體及促進體系形成液相,因而能降低α-堇青石相合成溫度。
[Abstract]:Based on the synthesis of cordierite powder by unhydrolyzed sol-gel method, The effect of mineralizers on the synthesis of cordierite powders by unhydrolyzed sol-gel method was studied. The effects of mineralizers on the synthesis of cordierite powders by unhydrolyzed sol-gel method were studied by means of DTA-TGX XRD and FT-IR. The phase transition process of cordierite powder synthesized by non-hydrolytic sol-gel method under the condition of adding mineralizer was discussed. The phase transition process of cordierite precursor gel prepared by unhydrolyzed sol-gel method is as follows: the amorphous cordierite changes directly to 偽 -cordierite phase at 900 鈩，

本文編號：1521225