Zirconia ceramic material, preparation method thereof and electronic equipment: Fid-Bau Portal

Zirconia ceramic material, preparation method thereof and electronic equipment

LIN XINPING / LI HEZHEN / YANG QINGPING / JIANG PINYI

The invention provides a zirconia ceramic material and a preparation method thereof, and electronic equipment containing the ceramic material. The ceramic material comprises the following components: 1-4.8 mol% of niobium oxide and 95.2-99 mol% of phase-stable zirconia ceramic; the ceramic material is provided with a matrix layer and at least one strengthening layer adjacent to the matrix layer. The matrix layer is phase-stabilized zirconia ceramic, the matrix layer comprises monoclinic phase zirconia and tetragonal phase zirconia, and the monoclinic phase content in the matrix layer accounts for 0.1-8% of the weight of the matrix layer ceramic; the strengthening layer comprises niobium oxide, monoclinic phase zirconium oxide and tetragonal phase zirconium oxide, the content of the monoclinic phase in the strengthening layer is larger than that of the monoclinic phase in the matrix layer, the content of the monoclinic phase in the strengthening layer accounts for 5-80% of the weight of the ceramic material of the strengthening layer, and the thickness of the strengthening layer is 0.5-25 microns. Compared with the zirconia ceramic material in the prior art, the zirconia ceramic material has higher strength and can meet the strength requirement of the rear cover of the mobile intelligent equipment on the material.

本申请提供了一种氧化锆陶瓷材料及其制备方法、以及含有该陶瓷材料的电子设备，所述陶瓷材料成分包含1mol％～4.8mol％的氧化铌，95.2mol％～99mol％的相稳定氧化锆陶瓷；所述陶瓷材料具有基质层、至少一层与基质层相邻的强化层；所述基质层为相稳定氧化锆陶瓷，所述基质层包括单斜相氧化锆、四方相氧化锆，所述基质层中单斜相含量占基质层陶瓷的重量百分含量为0.1～8％；所述强化层包括氧化铌、单斜相氧化锆、四方相氧化锆，所述强化层中的单斜相含量大于基质层中的单斜相含量，所述强化层中单斜相含量占强化层陶瓷材料的重量百分含量为5～80％，所述强化层的厚度为0.5～25μm。所述氧化锆陶瓷材料相对于现有技术的氧化锆陶瓷材料强度较高，能满足移动智能设备的后盖对于材料的强度要求。

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