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MgLiAlON transparent ceramic for infrared optical window and preparation method of MgLiAlON transparent ceramic
The invention provides MgLiAlON transparent ceramic and a preparation method thereof. The MgLiAlON transparent ceramic is used for solving the problem that in the prior art, an infrared optical windowmaterial cannot have high strength and high infrared transmittance at the same time. The preparation method comprises the following steps: weighing MgO powder, LiAl5O8 powder, alpha-Al2O3 powder andAlN powder according to a preset proportion, carrying out ball milling and mixing, carrying out compression molding on the mixed powder, and carrying out isostatic cool pressing treatment to obtain ablank; putting the blank into an atmosphere sintering furnace, conducting heating to 1600-1800 DEG C, and keeping the temperature to obtain a primary sample; putting the preliminary sample into a hotisostatic pressing furnace, conducting heating to 1800-1950 DEG C, and carrying out hot isostatic pressing treatment under the pressure intensity of 150-200 MPa; and polishing the surface of the sample to obtain the MgLiAlON transparent ceramic. The MgLiAlON transparent ceramic is obtained through Mg<2+> and Li<+> double-element doping and component blending, has the characteristics of high infrared transmittance and high strength, and meets the requirements of an infrared optical window material.
本发明提供了一种MgLiAlON透明陶瓷及制备方法，用以解决现有技术中红外光学窗口材料不能兼具高强度和高红外透过率的问题。所述制备方法包括如下步骤：按预定比例称取MgO、LiAl5O8、α‑Al2O3、AlN粉料，球磨混合后，将混合粉体模压成型，再经冷等静压处理，得到坯料；坯料置于气氛烧结炉中，升温至1600～1800℃并保温，得到初步样品；再将初步样品置于热等静压炉中，升温到1800～1950℃、压强为150～200MPa下进行热等静压处理；再对样品表面抛光，得到MgLiAlON透明陶瓷。本发明通过Mg2+、Li+双元素掺杂及组分调配，获得MgLiAlON透明陶瓷，具有红外高透过率和高强度的特点，满足红外光学窗口材料的要求。
MgLiAlON transparent ceramic for infrared optical window and preparation method of MgLiAlON transparent ceramic
The invention provides MgLiAlON transparent ceramic and a preparation method thereof. The MgLiAlON transparent ceramic is used for solving the problem that in the prior art, an infrared optical windowmaterial cannot have high strength and high infrared transmittance at the same time. The preparation method comprises the following steps: weighing MgO powder, LiAl5O8 powder, alpha-Al2O3 powder andAlN powder according to a preset proportion, carrying out ball milling and mixing, carrying out compression molding on the mixed powder, and carrying out isostatic cool pressing treatment to obtain ablank; putting the blank into an atmosphere sintering furnace, conducting heating to 1600-1800 DEG C, and keeping the temperature to obtain a primary sample; putting the preliminary sample into a hotisostatic pressing furnace, conducting heating to 1800-1950 DEG C, and carrying out hot isostatic pressing treatment under the pressure intensity of 150-200 MPa; and polishing the surface of the sample to obtain the MgLiAlON transparent ceramic. The MgLiAlON transparent ceramic is obtained through Mg<2+> and Li<+> double-element doping and component blending, has the characteristics of high infrared transmittance and high strength, and meets the requirements of an infrared optical window material.
本发明提供了一种MgLiAlON透明陶瓷及制备方法，用以解决现有技术中红外光学窗口材料不能兼具高强度和高红外透过率的问题。所述制备方法包括如下步骤：按预定比例称取MgO、LiAl5O8、α‑Al2O3、AlN粉料，球磨混合后，将混合粉体模压成型，再经冷等静压处理，得到坯料；坯料置于气氛烧结炉中，升温至1600～1800℃并保温，得到初步样品；再将初步样品置于热等静压炉中，升温到1800～1950℃、压强为150～200MPa下进行热等静压处理；再对样品表面抛光，得到MgLiAlON透明陶瓷。本发明通过Mg2+、Li+双元素掺杂及组分调配，获得MgLiAlON透明陶瓷，具有红外高透过率和高强度的特点，满足红外光学窗口材料的要求。
MgLiAlON transparent ceramic for infrared optical window and preparation method of MgLiAlON transparent ceramic
用于红外光学窗口的MgLiAlON透明陶瓷及制备方法
WANG YUEZHONG (author) / TIAN MENG (author) / SUN PENG (author) / LIU MENGYIN (author) / ZHANG GAOFENG (author) / LIU HUASONG (author) / ZHANG RONGSHI (author)
2021-01-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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