The effect of Kb>2b>O on the microstructure of Nab>2b>O-CaO-Pb>2b>Ob>5b>-SiOb>2b> based ceramic system

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• 作者：Rehana Zia ; Madeeha Riaz ; ^{madeehariaz2762@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Iqra Hameed ; Ayesha Afifa
• 关键词：TGA ; Crystallization ; K2O ; Thermal stability
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：15-20
• 全文大小：2088 K

文摘

In present study ceramic based material having composition (Sib=MathURL&_method=retrieve&_eid=1-s2.0-S0030402616312086&_mathId=si4.gif&_user=111111111&_pii=S0030402616312086&_rdoc=1&_issn=00304026&md5=92b43c429f177a2299388616814ae181" title="Click to view the MathML source">Ob>2b>-Nb=MathURL&_method=retrieve&_eid=1-s2.0-S0030402616312086&_mathId=si1.gif&_user=111111111&_pii=S0030402616312086&_rdoc=1&_issn=00304026&md5=348030fb8d561c1f97eb0b095c717ed1" title="Click to view the MathML source">ab>2b>O-CaO-b=MathURL&_method=retrieve&_eid=1-s2.0-S0030402616312086&_mathId=si2.gif&_user=111111111&_pii=S0030402616312086&_rdoc=1&_issn=00304026&md5=744c411b7d04bca27b7e934bc05be1bd" title="Click to view the MathML source">Kb>2b>O-b=MathURL&_method=retrieve&_eid=1-s2.0-S0030402616312086&_mathId=si3.gif&_user=111111111&_pii=S0030402616312086&_rdoc=1&_issn=00304026&md5=1ce8c3ee8ddb6d6521019d10d4671515" title="Click to view the MathML source">Pb>2b>Ob>5b>) was synthesized by solid state method. The influence of sintering temperature at 900 °C and partial substitution of Nab>2b>O with Kb>2b>O in SiOb>2b>-Pb>2b>Ob>5b>-Nab>2b>O–CaO system on thermal and structural properties of system was studied by TGA-DSC, ourier transform IR, X-Ray Diffraction and Scanning electron Microscopy respectively. In all the thermally treated ceramic samples, solid solution of sodium calcium silicate Nab>2b>Cab>3b>Sib>6b>Ob>16b>, Combeite Nab>2b>Cab>2b>Sib>3b>Ob>9b>, Wollastonite, were known as main crystalline phases identified. The result showed that addition of Kb>2b>O stabilized the samples thermally, decreased the crystallization kinetics. The thermal stability for samples were observed in 800 °C–1000 °C region.