Abstract
Forsterite ceramics is a part of the refractory magnesium ceramics. The aim of this paper is to characterize the properties of forsterite ceramics in dependence on different compositions of the raw material mixture. Forsterite ceramics is not currently produced in the Czech Republic. Forsterite ceramics is used in industry for its high refractoriness and also for its coefficient of linear thermal expansion which is close to metals. The primary objective of this article is to synthesize forsterite ceramics via solid state reaction. Different raw materials were used for materials mixtures and properties of fired samples were investigated, considering the influence of the raw materials mixtures. Specifically the apparent porosity, water absorption, mineralogical composition, coefficient of linear thermal expansion and refractoriness were investigated.
Highlights
Forsterite is an end-member mineral of the olivine solid solution series which contains magnesium in its structure
The aim of this paper is to characterize the properties of forsterite ceramics in dependence on different compositions of the raw material mixture
Forsterite ceramics is used in industry for its high refractoriness and for its coefficient of linear thermal expansion which is close to metals
Summary
Forsterite is an end-member mineral of the olivine solid solution series which contains magnesium in its structure. Forsterite can be found as a solid solution of olivine which has the chemical formula (Mg2+, Fe2+)2[SiO4] [1]. Forsterite is used as a refractory material due to its high refractoriness up to 1850°C and its refractoriness under load of 1600°C [2]. Another significant property of forsterite is its coefficient of linear thermal expansion, which is very similar to the metals coefficient with increasing temperature. This is the reason why is forsterite ceramics widely used in electrical engineering.
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