A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sintering preparation method of high-strength mechanical property silicon-based ceramic core
The invention belongs to the technical field of ceramic sintering, and particularly relates to a high-strength mechanical property silicon-based ceramic core sintering preparation method which comprises the following steps: a preheating stage: putting a blank of a silicon-based ceramic core into a vacuum furnace, heating to 280-300 DEG C at a heating speed of 3-5 DEG C/min, and drying for 70-110 minutes; in the oxygenolysis stage, after drying is completed, the blank is heated to 450-950 DEG C at the heating speed of 1-3 DEG C/min for 8-15 h, and oxygenolysis treatment is conducted on the blank; in the high-temperature stage, after the step S2 is completed, the blank is heated to 1000-1100 DEG C at the heating speed of 0.3-1 DEG C/min for 3-5 h, so that a liquid phase on the surface of the blank flows, the material is shrunk, and pores are closed; the cristobalite powder and the zircon powder are added into the raw materials, so that the liquid-phase sintering process occurs in the sintering process, the sintering driving force can be improved, the flow mass transfer speed is higher than the diffusion mass transfer speed, and the sintering rate can be improved.
本发明属于陶瓷烧结技术领域，尤其为一种高强度力学性能硅基陶瓷型芯烧结制备方法，包括如下步骤：预热阶段，将硅基陶瓷型芯的胚体置于真空炉中，以3‑5℃/min的升温速度加热到280‑300℃进行干燥处理，干燥时间为70‑110min；氧化分解阶段，干燥完成后，以1‑3℃/min的升温速度加热到450‑950℃，升温时间为8‑15h，对胚体进行氧化分解处理；高温阶段，在步骤S2完成后，以0.3‑1℃/min的升温速度加热到1000‑1100℃，升温时间为3‑5h，使坯体表面液相流动，使材料收缩，气孔封闭；本发明通过在原料中添加方石英粉和锆英粉，从而在烧结过程中出现液相烧结过程，能提高烧结驱动力，流动传质比扩散传质速度要快，能够提高烧结速率。
Sintering preparation method of high-strength mechanical property silicon-based ceramic core
The invention belongs to the technical field of ceramic sintering, and particularly relates to a high-strength mechanical property silicon-based ceramic core sintering preparation method which comprises the following steps: a preheating stage: putting a blank of a silicon-based ceramic core into a vacuum furnace, heating to 280-300 DEG C at a heating speed of 3-5 DEG C/min, and drying for 70-110 minutes; in the oxygenolysis stage, after drying is completed, the blank is heated to 450-950 DEG C at the heating speed of 1-3 DEG C/min for 8-15 h, and oxygenolysis treatment is conducted on the blank; in the high-temperature stage, after the step S2 is completed, the blank is heated to 1000-1100 DEG C at the heating speed of 0.3-1 DEG C/min for 3-5 h, so that a liquid phase on the surface of the blank flows, the material is shrunk, and pores are closed; the cristobalite powder and the zircon powder are added into the raw materials, so that the liquid-phase sintering process occurs in the sintering process, the sintering driving force can be improved, the flow mass transfer speed is higher than the diffusion mass transfer speed, and the sintering rate can be improved.
本发明属于陶瓷烧结技术领域，尤其为一种高强度力学性能硅基陶瓷型芯烧结制备方法，包括如下步骤：预热阶段，将硅基陶瓷型芯的胚体置于真空炉中，以3‑5℃/min的升温速度加热到280‑300℃进行干燥处理，干燥时间为70‑110min；氧化分解阶段，干燥完成后，以1‑3℃/min的升温速度加热到450‑950℃，升温时间为8‑15h，对胚体进行氧化分解处理；高温阶段，在步骤S2完成后，以0.3‑1℃/min的升温速度加热到1000‑1100℃，升温时间为3‑5h，使坯体表面液相流动，使材料收缩，气孔封闭；本发明通过在原料中添加方石英粉和锆英粉，从而在烧结过程中出现液相烧结过程，能提高烧结驱动力，流动传质比扩散传质速度要快，能够提高烧结速率。
Sintering preparation method of high-strength mechanical property silicon-based ceramic core
一种高强度力学性能硅基陶瓷型芯烧结制备方法
ZHOU CHANGJUN (author) / GUO YUNLONG (author) / DU FENGYANG (author) / TANG RONGJUN (author) / TANG RONGBIAO (author)
2022-06-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Reinforcing method for silicon-based ceramic core with excellent mechanical property
| European Patent Office | 2022
BATCH SINTERING METHOD FOR HIGH-PROPERTY SILICON NITRIDE CERAMIC SUBSTRATE
| European Patent Office | 2024
| European Patent Office | 2023
| European Patent Office | 2025
| European Patent Office | 2023