Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Barium titanate ceramic as well as preparation method and application thereof
The invention discloses barium titanate ceramic as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing barium titanate raw material powder with a binder, tabletting, and then carrying out multi-stage sintering, the multi-stage sintering sequentially comprises the following stages of platform heat preservation sintering, wherein after the temperature is increased to 1130-1150 DEG C, heat preservation is conducted for 5-10 min; sintering at high temperature: raising the temperature to 1150-1180 DEG C without heat preservation; the heating temperature of high-temperature sintering is higher than the heating temperature of platform heat preservation sintering; and low-temperature heat-preservation sintering: cooling to 850-950 DEG C, and then preserving heat for 20-30 hours. On the basis of ceramic sintering dynamics, sintering process temperatures and heat preservation time in different stages are determined by fitting a sintering path in the sintering process, so that the densification stage time of the ceramic in the sintering process is prolonged, and the ceramic density is improved while the ceramic grain size is controlled.
本发明公开了一种钛酸钡陶瓷及其制备方法和应用。该制备方法包括以下步骤：将钛酸钡原料粉体与粘结剂混合后压片，然后进行多段烧结；多段烧结依次包括以下阶段：平台保温烧结：升温至1130～1150℃后保温5～10min；高温烧结：升温至1150～1180℃不进行保温；高温烧结的升温温度＞平台保温烧结的升温温度；低温保温烧结：降温至850～950℃后保温20～30h。本发明基于陶瓷烧结动力学，通过对烧结过程中烧结路径的拟合确定不同阶段烧结工艺温度与保温时间，使陶瓷在烧结过程中处于致密化阶段时间延长，进而在控制陶瓷晶粒尺寸的同时提高陶瓷致密度。
Barium titanate ceramic as well as preparation method and application thereof
The invention discloses barium titanate ceramic as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing barium titanate raw material powder with a binder, tabletting, and then carrying out multi-stage sintering, the multi-stage sintering sequentially comprises the following stages of platform heat preservation sintering, wherein after the temperature is increased to 1130-1150 DEG C, heat preservation is conducted for 5-10 min; sintering at high temperature: raising the temperature to 1150-1180 DEG C without heat preservation; the heating temperature of high-temperature sintering is higher than the heating temperature of platform heat preservation sintering; and low-temperature heat-preservation sintering: cooling to 850-950 DEG C, and then preserving heat for 20-30 hours. On the basis of ceramic sintering dynamics, sintering process temperatures and heat preservation time in different stages are determined by fitting a sintering path in the sintering process, so that the densification stage time of the ceramic in the sintering process is prolonged, and the ceramic density is improved while the ceramic grain size is controlled.
本发明公开了一种钛酸钡陶瓷及其制备方法和应用。该制备方法包括以下步骤：将钛酸钡原料粉体与粘结剂混合后压片，然后进行多段烧结；多段烧结依次包括以下阶段：平台保温烧结：升温至1130～1150℃后保温5～10min；高温烧结：升温至1150～1180℃不进行保温；高温烧结的升温温度＞平台保温烧结的升温温度；低温保温烧结：降温至850～950℃后保温20～30h。本发明基于陶瓷烧结动力学，通过对烧结过程中烧结路径的拟合确定不同阶段烧结工艺温度与保温时间，使陶瓷在烧结过程中处于致密化阶段时间延长，进而在控制陶瓷晶粒尺寸的同时提高陶瓷致密度。
Barium titanate ceramic as well as preparation method and application thereof
一种钛酸钡陶瓷及其制备方法和应用
ZHANG LEI (Autor:in) / XU HUIFENG (Autor:in) / YU SHUHUI (Autor:in) / SUN RONG (Autor:in)
29.11.2024
Patent
Elektronische Ressource
Chinesisch
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