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Systematic investigation of close-packed silica nanospheres monolayer under sintering conditions
Journal of the European Ceramic Society ( IF 5.8 ) Pub Date : 2018-11-29 , DOI: 10.1016/j.jeurceramsoc.2018.11.047
Sakshum Khanna , Utsav , Harsh Chaliyawala , Sagar Paneliya , Debmalya Roy , Kingsuk Mukhopadhyay , Rupak Banerjee , Indrajit Mukhopadhyay

In this paper, we have quantified and investigated the effect of various sintering temperature on close-packed Silica Nanospheres (SNs) monolayers. SNs with diameters of 140, 175 and 220 nm were fabricated by an effective and reliable spin-coating technique. The fabricated SNs monolayers were sintered up to 1200 °C and were analyzed from FESEM to investigate in details for local and extended transformations in their structural and morphological properties. A distinct "neck-formation" was observed and was quantified with different particle size distribution as well as surface packing density. It was observed that SNs monolayer undergoes intra-particle reformation in the form of shrinkage in individual SNs and compactification of growth domains, followed by inter-particle sintering. A geometrical model was developed to determine the curvature radius and interpenetration depth thus enabling us to quantify the parameters that dominate the dynamics of the sintering process for such non-porous SNs.



中文翻译:

烧结条件下密堆积二氧化硅纳米球单层的系统研究

在本文中,我们已经量化并研究了各种烧结温度对紧密堆积的二氧化硅纳米球(SNs)单层的影响。通过有效和可靠的旋涂技术制造了直径为140、175和220 nm的SN。将制成的SNs单层烧结至1200°C,并通过FESEM进行分析,以详细研究其结构和形态特性的局部和扩展转变。观察到明显的“颈部形成”,并用不同的粒度分布以及表面堆积密度进行了定量。观察到,SNs单层以单个SN中的收缩形式和生长域的致密化形式经历了颗粒内重构,然后进行了颗粒间烧结。

更新日期:2018-11-29
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