Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of magnesium aluminate spinel lens
The invention discloses a preparation method of a magnesium aluminate spinel lens. The method comprises the following steps: mixing magnesium aluminate spinel powder, a first sintering aid, a second sintering aid, a binder and a dispersant, and then carrying out ball milling to obtain a mixture; wherein the first sintering aid is an aid for promoting sintering by forming a liquid phase, the second sintering aid is an aid for promoting sintering through a grain boundary pinning effect, the first sintering aid is a main agent, and the second sintering aid is an auxiliary agent; and carrying out compression molding on the mixture, and sintering to obtain the magnesium aluminate spinel lens. Two sintering aids with different sintering promoting mechanisms are added, the different sintering promoting mechanisms are complementary, the existing first sintering aid is improved, the first sintering aid is used as a main material, the second sintering aid is used as an auxiliary material, and under the condition that the grain boundary pinning effect is used for assistance, the sintering efficiency is improved. And the defect of abnormal grain increase caused by the first sintering aid is improved, so that a product with both mechanical properties and optical properties is obtained.
本发明公开一种镁铝尖晶石镜片的制备方法。该方法包括：将镁铝尖晶石粉料、第一烧结助剂、第二烧结助剂、粘结剂和分散剂混合，然后进行球磨，得到混合料；其中，所述第一烧结助剂为通过形成液相促进烧结的助剂，所述第二烧结助剂为通过晶界钉扎效应促进烧结的助剂，所述第一烧结助剂为主，所述第二烧结助剂为辅；将所述混合料进行压制成型，烧结，得到镁铝尖晶石镜片。本发明通过添加两类不同促进烧结机制的烧结助剂，通过不同的促进烧结机制互补，对现有的第一烧结助剂进行改善，而且第一烧结助剂为主，第二烧结助剂为辅，通过晶界钉扎效应进行辅助的情况下，对第一烧结助剂造成的晶粒异常增大缺陷进行改善，从而获得了兼具力学性能和光学性能的产品。
Preparation method of magnesium aluminate spinel lens
The invention discloses a preparation method of a magnesium aluminate spinel lens. The method comprises the following steps: mixing magnesium aluminate spinel powder, a first sintering aid, a second sintering aid, a binder and a dispersant, and then carrying out ball milling to obtain a mixture; wherein the first sintering aid is an aid for promoting sintering by forming a liquid phase, the second sintering aid is an aid for promoting sintering through a grain boundary pinning effect, the first sintering aid is a main agent, and the second sintering aid is an auxiliary agent; and carrying out compression molding on the mixture, and sintering to obtain the magnesium aluminate spinel lens. Two sintering aids with different sintering promoting mechanisms are added, the different sintering promoting mechanisms are complementary, the existing first sintering aid is improved, the first sintering aid is used as a main material, the second sintering aid is used as an auxiliary material, and under the condition that the grain boundary pinning effect is used for assistance, the sintering efficiency is improved. And the defect of abnormal grain increase caused by the first sintering aid is improved, so that a product with both mechanical properties and optical properties is obtained.
本发明公开一种镁铝尖晶石镜片的制备方法。该方法包括：将镁铝尖晶石粉料、第一烧结助剂、第二烧结助剂、粘结剂和分散剂混合，然后进行球磨，得到混合料；其中，所述第一烧结助剂为通过形成液相促进烧结的助剂，所述第二烧结助剂为通过晶界钉扎效应促进烧结的助剂，所述第一烧结助剂为主，所述第二烧结助剂为辅；将所述混合料进行压制成型，烧结，得到镁铝尖晶石镜片。本发明通过添加两类不同促进烧结机制的烧结助剂，通过不同的促进烧结机制互补，对现有的第一烧结助剂进行改善，而且第一烧结助剂为主，第二烧结助剂为辅，通过晶界钉扎效应进行辅助的情况下，对第一烧结助剂造成的晶粒异常增大缺陷进行改善，从而获得了兼具力学性能和光学性能的产品。
Preparation method of magnesium aluminate spinel lens
一种镁铝尖晶石镜片的制备方法
ZHANG YANG (Autor:in) / GE YUANPU (Autor:in)
24.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2018
Aluminate cement containing nano magnesium aluminate spinel and preparation method thereof
| Europäisches Patentamt | 2015
Preparation method of magnesium aluminate spinel transparent ceramic
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2024
Preparation method of magnesium aluminate spinel hollow spheres
| Europäisches Patentamt | 2024