本文選題：鎂橄欖石 + 熱處理制度�。� 參考：《陶瓷學(xué)報(bào)》2017年05期

【摘要】：以氫氧化鎂和二氧化硅為主要原料,采用固相反應(yīng)法合成了鎂橄欖石,借助XRD、SEM、EDS等分析手段研究了熱處理溫度、組成變化對(duì)樣品的物相組成、顯微結(jié)構(gòu)、基本物理性能等性質(zhì)的影響。研究結(jié)果表明:鎂橄欖石自1500℃開(kāi)始大量形成,熱處理溫度升高有利于鎂橄欖石的形成及長(zhǎng)大;組成中富鎂可以促進(jìn)鎂橄欖石、抑制頑火輝石生成,氧化鎂遷移擴(kuò)散在其顆粒表面析出鎂橄欖石,并在其周?chē)L(zhǎng)長(zhǎng)大,晶粒圓潤(rùn)緊密生長(zhǎng);富硅時(shí),先生成頑火輝石,然后在頑火輝石周?chē)饾u轉(zhuǎn)化為鎂橄欖石,形成的晶粒棱角分明,晶粒之間由富硅相組成。
[Abstract]:Magnesium olivine was synthesized by solid state reaction using magnesium hydroxide and silica as main raw materials. The phase composition and microstructure of the samples were studied by means of XRDX SEMMO-EDS and other analytical methods. The influence of basic physical properties and other properties. The results show that magnesium olivine is formed in large quantities from 1500 鈩，

本文編號(hào)：2067343