Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation process of novel transparent ceramic with high light transmittance
The invention discloses a preparation process of novel transparent ceramic with high light transmittance, and belongs to the technical field of ceramic preparation; nano aluminum oxide powder can be adopted; the purity and the fineness of the ceramic are improved; particle distribution is quite uniform, a double-extension hole eliminating device is innovatively introduced in the green body sintering process; a hydrogen atmosphere mixed with nano aluminum oxide powder is introduced; the characteristics of small hydrogen atom radius and high diffusion rate are utilized; pores in the green body can be quickly discharged through the entrained nanometer aluminum oxide powder; meanwhile, gas extrusion can be accelerated and filling and repairing can be carried out by utilizing the nano aluminumoxide powder which is temporarily soaked with a binding agent, and the crystal density of ceramic sintering is improved; and the double-extension pore eliminating device is arranged on the airflow impact near the surface of the green body, so that on one hand, pore elimination can be accelerated, on the other hand, the stress structure of the green body can be improved by utilizing the micro-impact effect, and substance migration and grain boundary movement are promoted, so that the transparency and the strength performance of the ceramic are remarkably improved.
本发明公开了一种高透光新型透明陶瓷制备工艺，属于陶瓷制备技术领域，可以实现采用纳米氧化铝粉末，提高陶瓷的纯度和细度，且颗粒分布十分均匀，并于坯体烧结的过程中创新性的引入双伸式消孔装置，通入混合有纳米氧化铝粉末的氢气气氛，利用氢气原子半径小、扩散速率大的特点，通过夹带的纳米氧化铝粉末不仅可以快速排出坯体中的气孔，同时利用临时浸润有粘结剂的纳米氧化铝粉末可以加速挤出气体并进行填充修补，提高陶瓷烧结的晶体致密度，并且双伸式消孔装置于坯体近表面处的气流冲击，一方面可以加速气孔消除，另一方面可以利用微冲击作用改善坯体的应力结构，促进物质迁移和晶界移动，从而显著提高陶瓷的透明度和强度性能。
Preparation process of novel transparent ceramic with high light transmittance
The invention discloses a preparation process of novel transparent ceramic with high light transmittance, and belongs to the technical field of ceramic preparation; nano aluminum oxide powder can be adopted; the purity and the fineness of the ceramic are improved; particle distribution is quite uniform, a double-extension hole eliminating device is innovatively introduced in the green body sintering process; a hydrogen atmosphere mixed with nano aluminum oxide powder is introduced; the characteristics of small hydrogen atom radius and high diffusion rate are utilized; pores in the green body can be quickly discharged through the entrained nanometer aluminum oxide powder; meanwhile, gas extrusion can be accelerated and filling and repairing can be carried out by utilizing the nano aluminumoxide powder which is temporarily soaked with a binding agent, and the crystal density of ceramic sintering is improved; and the double-extension pore eliminating device is arranged on the airflow impact near the surface of the green body, so that on one hand, pore elimination can be accelerated, on the other hand, the stress structure of the green body can be improved by utilizing the micro-impact effect, and substance migration and grain boundary movement are promoted, so that the transparency and the strength performance of the ceramic are remarkably improved.
本发明公开了一种高透光新型透明陶瓷制备工艺，属于陶瓷制备技术领域，可以实现采用纳米氧化铝粉末，提高陶瓷的纯度和细度，且颗粒分布十分均匀，并于坯体烧结的过程中创新性的引入双伸式消孔装置，通入混合有纳米氧化铝粉末的氢气气氛，利用氢气原子半径小、扩散速率大的特点，通过夹带的纳米氧化铝粉末不仅可以快速排出坯体中的气孔，同时利用临时浸润有粘结剂的纳米氧化铝粉末可以加速挤出气体并进行填充修补，提高陶瓷烧结的晶体致密度，并且双伸式消孔装置于坯体近表面处的气流冲击，一方面可以加速气孔消除，另一方面可以利用微冲击作用改善坯体的应力结构，促进物质迁移和晶界移动，从而显著提高陶瓷的透明度和强度性能。
Preparation process of novel transparent ceramic with high light transmittance
一种高透光新型透明陶瓷制备工艺
17.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
High-transmittance transparent ceramic and preparation method thereof
| Europäisches Patentamt | 2022
Preparation method of magnesium aluminate spinel transparent ceramic with high light transmittance
| Europäisches Patentamt | 2023
Preparation method of yttrium oxide transparent ceramic with high visible light transmittance
| Europäisches Patentamt | 2021
Preparation method of high-transmittance Dy: Y2O3 transparent ceramic
| Europäisches Patentamt | 2022
Preparation method of high-transmittance Ce: YAG transparent ceramic
| Europäisches Patentamt | 2024