Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of MgAlON ceramic with high infrared transmittance
The invention relates to a preparation method of MgAlON ceramic with high infrared transmittance, and belongs to the field of ceramic preparation. The invention relates to a method for preparing MgAlON ceramic with high infrared transmittance, which comprises the following steps of: ball-milling and mixing 86.2-86.6 wt.% of gamma-Al2O3, 8.6 wt.% of MgO and 4.8-5.2 wt.% of carbon black, and synthesizing pure-phase MgAlON powder with an O/N value of 9.5-12.0 by adopting a carbon thermal reduction nitridation method; caCO3 is added into the pure-phase MgAlON powder to serve as a sintering aid, MgAlON/CaCO3 mixed powder is obtained after ball milling, and a green body is prepared through dry pressing; and preparing the MgAlON ceramic with high infrared transmittance by adopting a pressureless sintering method. According to the method, the MgAlON transparent ceramic is prepared by designing the composition of the raw material powder, regulating and controlling the nitridation degree of the MgAlON powder and further adopting the powder as the raw material through a pressureless sintering method under the condition of short heat preservation time, the raw materials are easy to obtain and low in price, the prepared MgAlON powder is good in sintering performance, and the MgAlON transparent ceramic is high in infrared transmittance, good in energy-saving effect, high in efficiency, low in cost and suitable for industrial production. And the process is simple and feasible, and is suitable for industrial production.
本发明涉及一种高红外透过率MgAlON陶瓷的制备方法，属于陶瓷制备领域。一种制备高红外透过率MgAlON陶瓷的方法，取86.2‑86.6wt.％γ‑Al2O3、8.6wt.％MgO和4.8‑5.2wt.％炭黑球磨混合后，采用碳热还原氮化法合成O/N值为9.5‑12.0的纯相MgAlON粉体；向纯相MgAlON粉体中添加CaCO3作为烧结助剂，球磨后得MgAlON/CaCO3混合粉体，干压成型制备坯体；再采用无压烧结法制备高红外透过率MgAlON陶瓷。该方法通过设计原料粉体组成，调控MgAlON粉体的氮化程度，进而以该粉体为原料采用无压烧结法在较短的保温时间条件下制备出MgAlON透明陶瓷，原料易得且价格低廉，所制得的MgAlON粉体烧结性能好，MgAlON透明陶瓷红外透过率高，节能效果好、效率高，不仅成本低，而且工艺简单易行，适用于工业化生产。
Preparation method of MgAlON ceramic with high infrared transmittance
The invention relates to a preparation method of MgAlON ceramic with high infrared transmittance, and belongs to the field of ceramic preparation. The invention relates to a method for preparing MgAlON ceramic with high infrared transmittance, which comprises the following steps of: ball-milling and mixing 86.2-86.6 wt.% of gamma-Al2O3, 8.6 wt.% of MgO and 4.8-5.2 wt.% of carbon black, and synthesizing pure-phase MgAlON powder with an O/N value of 9.5-12.0 by adopting a carbon thermal reduction nitridation method; caCO3 is added into the pure-phase MgAlON powder to serve as a sintering aid, MgAlON/CaCO3 mixed powder is obtained after ball milling, and a green body is prepared through dry pressing; and preparing the MgAlON ceramic with high infrared transmittance by adopting a pressureless sintering method. According to the method, the MgAlON transparent ceramic is prepared by designing the composition of the raw material powder, regulating and controlling the nitridation degree of the MgAlON powder and further adopting the powder as the raw material through a pressureless sintering method under the condition of short heat preservation time, the raw materials are easy to obtain and low in price, the prepared MgAlON powder is good in sintering performance, and the MgAlON transparent ceramic is high in infrared transmittance, good in energy-saving effect, high in efficiency, low in cost and suitable for industrial production. And the process is simple and feasible, and is suitable for industrial production.
本发明涉及一种高红外透过率MgAlON陶瓷的制备方法，属于陶瓷制备领域。一种制备高红外透过率MgAlON陶瓷的方法，取86.2‑86.6wt.％γ‑Al2O3、8.6wt.％MgO和4.8‑5.2wt.％炭黑球磨混合后，采用碳热还原氮化法合成O/N值为9.5‑12.0的纯相MgAlON粉体；向纯相MgAlON粉体中添加CaCO3作为烧结助剂，球磨后得MgAlON/CaCO3混合粉体，干压成型制备坯体；再采用无压烧结法制备高红外透过率MgAlON陶瓷。该方法通过设计原料粉体组成，调控MgAlON粉体的氮化程度，进而以该粉体为原料采用无压烧结法在较短的保温时间条件下制备出MgAlON透明陶瓷，原料易得且价格低廉，所制得的MgAlON粉体烧结性能好，MgAlON透明陶瓷红外透过率高，节能效果好、效率高，不仅成本低，而且工艺简单易行，适用于工业化生产。
Preparation method of MgAlON ceramic with high infrared transmittance
一种高红外透过率MgAlON陶瓷的制备方法
SHAN YINGCHUN (Autor:in) / XU JIUJUN (Autor:in) / YU XIAOTIAN (Autor:in) / GUO HAORAN (Autor:in)
06.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024
MgAlON transparent ceramic, photocuring ceramic slurry and corresponding preparation method
| Europäisches Patentamt | 2024
Method for preparing MgAlON transparent ceramic biscuit by direct coagulation casting
| Europäisches Patentamt | 2015
Multiphase ceramic material with high infrared transmittance and preparation method thereof
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2015