Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a titanium dioxide-based ceramic and a preparation method thereof, and is characterized in that the titanium dioxide-based ceramic is prepared by adopting a hot pressing process, wherein the nominal chemical formula of the titanium dioxide-based ceramic is (YbaTabNbc)xTi(1-x)O2, (a = b = c = 0.4-0.6, and the value range of x is 0.005-0.015). The preparation method comprisesthe following steps: (1) weighing rutile TiO2, Yb2O3, Ta2O5 and Nb2O5 powder according to the nominal chemical molecular formula (YbaTabNbc)xTi (1-x)O2, carrying out ball milling, and drying the powder; and 2) presintering the dried powder, carrying out secondary ball milling, drying the obtained powder, and carrying out hot pressing for 1-3 hours at the temperature of 900-1200 DEG C under the pressure of 60-70 MPa to obtain the titanium dioxide-based ceramic with ultrahigh dielectric constant and low dielectric loss.
本发明公开了一种二氧化钛基陶瓷及其制备方法，其特征在于，二氧化钛基陶瓷采用热压工艺制备，其名义化学分子式为(YbaTaNb)TiO,其中，a=b=c=0.4~0.6，x的取值范围为0.005～0.015。其制备方法包括以下步骤：1)按照名义化学分子式(YbaTaNb)TiO，称取金红石型TiO、YbO、TaO和NbO粉体，进行球磨、烘干；2)将烘干的粉体预烧，二次球磨，所得粉体烘干后，在60~70Mpa压强下，温度900～1200℃，热压1‑3h，即可得到超高介电常数低介电损耗的二氧化钛基陶瓷。
The invention discloses a titanium dioxide-based ceramic and a preparation method thereof, and is characterized in that the titanium dioxide-based ceramic is prepared by adopting a hot pressing process, wherein the nominal chemical formula of the titanium dioxide-based ceramic is (YbaTabNbc)xTi(1-x)O2, (a = b = c = 0.4-0.6, and the value range of x is 0.005-0.015). The preparation method comprisesthe following steps: (1) weighing rutile TiO2, Yb2O3, Ta2O5 and Nb2O5 powder according to the nominal chemical molecular formula (YbaTabNbc)xTi (1-x)O2, carrying out ball milling, and drying the powder; and 2) presintering the dried powder, carrying out secondary ball milling, drying the obtained powder, and carrying out hot pressing for 1-3 hours at the temperature of 900-1200 DEG C under the pressure of 60-70 MPa to obtain the titanium dioxide-based ceramic with ultrahigh dielectric constant and low dielectric loss.
本发明公开了一种二氧化钛基陶瓷及其制备方法，其特征在于，二氧化钛基陶瓷采用热压工艺制备，其名义化学分子式为(YbaTaNb)TiO,其中，a=b=c=0.4~0.6，x的取值范围为0.005～0.015。其制备方法包括以下步骤：1)按照名义化学分子式(YbaTaNb)TiO，称取金红石型TiO、YbO、TaO和NbO粉体，进行球磨、烘干；2)将烘干的粉体预烧，二次球磨，所得粉体烘干后，在60~70Mpa压强下，温度900～1200℃，热压1‑3h，即可得到超高介电常数低介电损耗的二氧化钛基陶瓷。
Titanium dioxide ceramic and preparation method thereof
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