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Zirconia ceramic as well as preparation method and application thereof
The invention relates to the field of zirconia ceramic, and discloses zirconia ceramic as well as a preparation method and application thereof. The zirconium oxide ceramic comprises the following elements: Y, Zr, Mg, Al, Si and Nb, and the phase of the zirconium oxide ceramic comprises monoclinic phase zirconium oxide, tetragonal phase zirconium oxide, zirconium silicate and cordierite. The zirconium oxide ceramic comprises the following components in percentage by element: 50.6 to 61.1 percent by weight of Zr, 5.1 to 12.6 percent by weight of Al, Mg and Si, 3.2 to 3.9 percent by weight of Y, and 0.3 to 2.7 percent by weight of Nb. The phase of the zirconia ceramic comprises 60 to 80 percent by weight of monoclinic phase zirconium oxide, 3 to 30 percent by weight of tetragonal phase zirconium oxide, 8 to 22 percent by weight of cordierite and 0.5 to 3 percent by weight of zirconium silicate. The zirconia ceramic can simultaneously have the characteristics that the dielectric constant is less than 30, the density is less than 5.40 g/cm < 3 >, and the toughness is greater than 6.5 MPam 0.5, and can be used for a mobile phone backboard with low dielectric constant, low density and good toughness.
本发明涉及氧化锆陶瓷领域，公开了一种氧化锆陶瓷及其制备方法和应用。所述氧化锆陶瓷以元素计包含：Y、Zr、Mg、Al、Si和Nb，且所述氧化锆陶瓷的物相包含：单斜相氧化锆、四方相氧化锆、硅酸锆和堇青石；其中，所述氧化锆陶瓷以元素计包含：50.6‑61.1wt％的Zr、5.1‑12.6wt％的Al+Mg+Si、3.2‑3.9wt％的Y、0.3‑2.7wt％的Nb；所述氧化锆陶瓷的物相包含：60‑80wt％的单斜相氧化锆、3‑30wt％的四方相氧化锆、8‑22wt％的堇青石，0.5‑3wt％的硅酸锆。该氧化锆陶瓷可以同时具有介电常数小于30，密度低于5.40g/cm3，韧性大于6.5MPam0.5的特点，能够提供用于低介电常数、低密度和韧性好的手机背板。
Zirconia ceramic as well as preparation method and application thereof
The invention relates to the field of zirconia ceramic, and discloses zirconia ceramic as well as a preparation method and application thereof. The zirconium oxide ceramic comprises the following elements: Y, Zr, Mg, Al, Si and Nb, and the phase of the zirconium oxide ceramic comprises monoclinic phase zirconium oxide, tetragonal phase zirconium oxide, zirconium silicate and cordierite. The zirconium oxide ceramic comprises the following components in percentage by element: 50.6 to 61.1 percent by weight of Zr, 5.1 to 12.6 percent by weight of Al, Mg and Si, 3.2 to 3.9 percent by weight of Y, and 0.3 to 2.7 percent by weight of Nb. The phase of the zirconia ceramic comprises 60 to 80 percent by weight of monoclinic phase zirconium oxide, 3 to 30 percent by weight of tetragonal phase zirconium oxide, 8 to 22 percent by weight of cordierite and 0.5 to 3 percent by weight of zirconium silicate. The zirconia ceramic can simultaneously have the characteristics that the dielectric constant is less than 30, the density is less than 5.40 g/cm < 3 >, and the toughness is greater than 6.5 MPam 0.5, and can be used for a mobile phone backboard with low dielectric constant, low density and good toughness.
本发明涉及氧化锆陶瓷领域，公开了一种氧化锆陶瓷及其制备方法和应用。所述氧化锆陶瓷以元素计包含：Y、Zr、Mg、Al、Si和Nb，且所述氧化锆陶瓷的物相包含：单斜相氧化锆、四方相氧化锆、硅酸锆和堇青石；其中，所述氧化锆陶瓷以元素计包含：50.6‑61.1wt％的Zr、5.1‑12.6wt％的Al+Mg+Si、3.2‑3.9wt％的Y、0.3‑2.7wt％的Nb；所述氧化锆陶瓷的物相包含：60‑80wt％的单斜相氧化锆、3‑30wt％的四方相氧化锆、8‑22wt％的堇青石，0.5‑3wt％的硅酸锆。该氧化锆陶瓷可以同时具有介电常数小于30，密度低于5.40g/cm3，韧性大于6.5MPam0.5的特点，能够提供用于低介电常数、低密度和韧性好的手机背板。
Zirconia ceramic as well as preparation method and application thereof
氧化锆陶瓷及其制备方法和应用
TANG WEI (author) / LIN XINPING (author) / CHEN GE (author)
2021-06-22
Patent
Electronic Resource
Chinese
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