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Low-temperature rapid preparation method of MgAlON transparent ceramic with high infrared transmittance
The invention relates to a low-temperature rapid preparation method of MgAlON transparent ceramic with high infrared transmittance, and belongs to the field of ceramic preparation. The method comprises the following steps: designing the chemical composition of MgAlON according to an Al2O3-AlN-MgO phase diagram, synthesizing pure-phase MgAlON powder by using 76-77 wt.% of gamma-Al2O3, 13-14 wt.% of AlN and 9-9.6 wt.% of MgAl2O4 as raw materials through a high-temperature solid-phase method, adding a sintering aid, carrying out ball milling, drying to obtain MgAlON/sintering aid mixed powder, carrying out dry-pressing molding to prepare a blank, heating the blank to 1780-1900 DEG C at a speed of 10-40 DEG C/min in a nitrogen atmosphere, carrying out heat preservation for 30-180 minutes, carrying out heat preservation for 20-30 minutes at a speed of 10-40 DEG C/min, carrying out heat preservation for 20-30 minutes at a speed of 20-30 DEG C/min, and the MgAlON transparent ceramic is prepared. The method has the characteristics of controllable chemical composition, simple sintering equipment, low sintering temperature, short heat preservation time, high infrared transmittance of the prepared MgAlON ceramic and the like, and is good in energy-saving effect, high in efficiency, low in cost, suitable for preparation of large-size and complex-shape sample pieces and easy to realize industrialization.
本发明涉及一种高红外透过率MgAlON透明陶瓷的低温快速制备方法，属于陶瓷制备领域。该方法首先依据Al2O3‑AlN‑MgO相图设计MgAlON的化学组成，再以76‑77wt.％γ‑Al2O3、13‑14wt.％AlN和9‑9.6wt.％MgAl2O4为原料，通过高温固相法合成纯相MgAlON粉体，添加烧结助剂，球磨后烘干得MgAlON/烧结助剂混合粉体，干压成型制备坯体，随后将坯体在氮气气氛下以10‑40℃/min升温到1780‑1900℃保温30‑180min，制得MgAlON透明陶瓷。该方法具有化学组成可控、烧结设备简单、烧结温度低、保温时间短，以及所制备的MgAlON陶瓷红外透过率高等特点，节能效果好、效率高、成本低，适宜大尺寸及复杂形状样件制备，易实现产业化。
Low-temperature rapid preparation method of MgAlON transparent ceramic with high infrared transmittance
The invention relates to a low-temperature rapid preparation method of MgAlON transparent ceramic with high infrared transmittance, and belongs to the field of ceramic preparation. The method comprises the following steps: designing the chemical composition of MgAlON according to an Al2O3-AlN-MgO phase diagram, synthesizing pure-phase MgAlON powder by using 76-77 wt.% of gamma-Al2O3, 13-14 wt.% of AlN and 9-9.6 wt.% of MgAl2O4 as raw materials through a high-temperature solid-phase method, adding a sintering aid, carrying out ball milling, drying to obtain MgAlON/sintering aid mixed powder, carrying out dry-pressing molding to prepare a blank, heating the blank to 1780-1900 DEG C at a speed of 10-40 DEG C/min in a nitrogen atmosphere, carrying out heat preservation for 30-180 minutes, carrying out heat preservation for 20-30 minutes at a speed of 10-40 DEG C/min, carrying out heat preservation for 20-30 minutes at a speed of 20-30 DEG C/min, and the MgAlON transparent ceramic is prepared. The method has the characteristics of controllable chemical composition, simple sintering equipment, low sintering temperature, short heat preservation time, high infrared transmittance of the prepared MgAlON ceramic and the like, and is good in energy-saving effect, high in efficiency, low in cost, suitable for preparation of large-size and complex-shape sample pieces and easy to realize industrialization.
本发明涉及一种高红外透过率MgAlON透明陶瓷的低温快速制备方法，属于陶瓷制备领域。该方法首先依据Al2O3‑AlN‑MgO相图设计MgAlON的化学组成，再以76‑77wt.％γ‑Al2O3、13‑14wt.％AlN和9‑9.6wt.％MgAl2O4为原料，通过高温固相法合成纯相MgAlON粉体，添加烧结助剂，球磨后烘干得MgAlON/烧结助剂混合粉体，干压成型制备坯体，随后将坯体在氮气气氛下以10‑40℃/min升温到1780‑1900℃保温30‑180min，制得MgAlON透明陶瓷。该方法具有化学组成可控、烧结设备简单、烧结温度低、保温时间短，以及所制备的MgAlON陶瓷红外透过率高等特点，节能效果好、效率高、成本低，适宜大尺寸及复杂形状样件制备，易实现产业化。
Low-temperature rapid preparation method of MgAlON transparent ceramic with high infrared transmittance
一种高红外透过率MgAlON透明陶瓷的低温快速制备方法
SHAN YINGCHUN (author) / XU JIUJUN (author) / HUANG CHAOJUN (author) / GUO HAORAN (author)
2024-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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