Large-scale ceramic plate

Abstract

The invention provides a thin and large scale ceramic plate capable of preventing damages and deformation in dryness and burning state, and mass change caused by temperature change can be prevented; specifically, the large scale ceramic plate comprises the following elements: Ca element converted by CaO with above 2mass% and under 20mass%; Mg element converted by MgO between 0.1mass% and 4mass%; ALelement converted by Al2o3 under 30mass%; Si element, and CaO / MgO mass ratio is between 5-60mass%. More preferably, the large scale ceramic plate has SiO2 / CaO mass ratio between 3-30mass%.

Description

technical field

[0001] The present invention relates to a large-sized ceramic plate, and specifically relates to a thin and large-sized ceramic plate that suppresses cracking and deformation, and suppresses mass changes due to fluctuations in firing temperature. Background technique

[0002] Large ceramic panels that can reduce joints, simplify construction, and diversify designs have been practically used and widely used. In addition, in order to realize the manufacture of large ceramic panels suitable for exterior building materials, various proposals have been made for suppressing cracking and deformation (warpage, deformation) of large ceramic panels.

[0003] For example, in order to suppress the deformation caused by molding deformation and obtain an elastic fired body, a large ceramic plate containing wollastonite has been proposed (Patent Document 1 (Japanese Patent Laid-Open Publication No. 10-236867), Patent Document 2 (Japanese Patent Laid-Open No. 2003-089570 A)...

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