不同粒径硅砂热膨胀差异的成因

IF 1.3 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Cast Metals Research Pub Date : 2020-10-20 DOI:10.1080/13640461.2020.1838078

Judit Svidró, A. Diószegi, József Tamás Svidró

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引用次数: 6

摘要

摘要本研究对一种常用硅砂的热物理性质进行了研究，并研究了其与粒度和化学成分的关系。对硅砂的各个部分进行热膨胀和差示扫描量热测试，并进行X射线荧光测量，以确定其成分。研究发现，基于SiO2含量的差异，不同粒度的硅砂表现出不同的热膨胀水平。还研究了两个额外的二氧化硅样品和一个回收的橄榄石砂的膨胀行为与其粒度的关系，以证明这一发现的合理性。

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The origin of thermal expansion differences in various size fractions of silica sand

ABSTRACT In this study, thermophysical properties of a commonly used silica sand were investigated and their relation to its granulometric and chemical composition was studied. Thermal expansion and differential scanning calorimetry tests were performed on individual fractions of the silica sand together with X-ray fluorescence measurements to determine their constituents. It was found that the various size fractions of silica sand exhibit different levels of thermal expansion based on the differences in SiO2 content. The expansion behaviour of two additional silica samples and a recycled olivine sand was also investigated in relation to its grain size to justify the findings.

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来源期刊

International Journal of Cast Metals Research 工程技术-冶金工程

CiteScore

2.70

自引率

7.10%

发文量

审稿时长

7.5 months

期刊介绍： The International Journal of Cast Metals Research is devoted to the dissemination of peer reviewed information on the science and engineering of cast metals, solidification and casting processes. Assured production of high integrity castings requires an integrated approach that optimises casting, mould and gating design; mould materials and binders; alloy composition and microstructure; metal melting, modification and handling; dimensional control; and finishing and post-treatment of the casting. The Journal reports advances in both the fundamental science and materials and production engineering contributing to the successful manufacture of fit for purpose castings.