Ceramic slice and preparation method thereof

Abstract

The invention discloses a ceramic slice and a preparation method thereof. The ceramic slice is mainly made of zirconia and rare earth oxides, is prepared through a hot-press vibration sintering technology, and has a thickness of 0.01 to 0.6 mm. Correspondingly, the invention also discloses a preparation method of the ceramic slice. The preparation method comprises the following steps: carrying out pre-pressing and forming on powder, which has been subjected to a pretreatment, so as to obtain a half-finished product; subjecting the half-finished product to a low temperature thermal treatment; subjecting the half-finished product to hot-press vibration sintering; and finally polishing and burnishing the half-finished product so as to obtain the ceramic slice with a thickness of 0.01 to 0.6 mm. The strength of the provided ceramic slice can reach 1400 MPa or more, the toughness can reach 10 MPa.m<1 / 2>, and the performance parameters of the ceramic slice are prominently higher than that of common ZrO2 products. The ceramic slice can satisfy the requirements on slice and ultrathin slice with a thickness of 0.01 to 0.6 mm and has the advantages of difficultness in breakage, little loss, long service life, and durability.

Description

technical field [0001] The invention relates to the field of ceramics, in particular to a ceramic sheet and a preparation method thereof. Background technique [0002] Wear-resistant structural ceramics are widely used in industrial and civil fields, such as wear-resistant seals, wear-resistant shafts, wear-resistant balls, wear-resistant sheets and other structural products. The main material is alumina Al 2 o 3 , Zirconia ZrO 2 etc., where Al 2 o 3 Structural parts made of materials have been widely used due to their low price, easy availability of raw materials, and simple process. However, due to its strength (200~300MPa) and toughness (2~3MPa?m 1 / 2 ) are not high enough, and can only be applied as medium and low-grade materials. [0003] Under the environmental conditions that require high strength and toughness, it is necessary to choose ZrO 2 Material, and often use isostatic pressing and then sintering to prepare products. With the currently commonly used Zr...

AI Technical Summary

Problems solved by technology

However, although currently commonly used methods (such as isostatic pressing) can prepare ZrO with higher strength and toughness 2 Products, and have been applied in many fields, but in some more demanding fields such as thin sheets, ultra-thin products, etc., it still cannot meet the requirements of use

The reason is that although the ZrO 2 The strength can reach 600~900MPa, but when the thickness of the product is very thin (as thin as 0.1~0.6mm), it is still easy to break, easy to wear, and has a short life, which cannot meet the requirements of long-term use.

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