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Alumina/GAP eutectic ceramic and preparation method thereof
The invention provides a preparation method of Al2O3/GdAlO3 eutectic ceramic, the preparation method comprises the following steps: mixing Al2O3 powder and Gd2O3 powder according to a eutectic ratio, and granulating to obtain spherical powder particles; melting and solidifying the spherical powder particles by adopting a CO2 laser additive manufacturing method to obtain single-layer eutectic ceramic; repeating the melting and solidification process, and obtaining the Al2O3/GdAlO3 eutectic ceramic; according to the CO2 laser additive manufacturing method, the scanning rate ranges from 48 mm/min to 240 mm/min, and the laser power ranges from 300 W to 500 W. The CO2 laser additive manufacturing method is adopted, and the scanning rate and the laser power are controlled within the range so that the prepared Al2O3/GdAlO3 eutectic ceramic is large in size and compact in structure, and the eutectic lamellar spacing of the prepared Al2O3/GdAlO3 eutectic ceramic can reach 0.2 mu m.
本发明提供了一种Al2O3/GdAlO3共晶陶瓷的制备方法，包括以下步骤：将Al2O3粉末和Gd2O3粉末按共晶配比混合后制粒，得到球形粉末颗粒；采用CO2激光增材制造方法将所述球形粉末颗粒熔化凝固，得到单层共晶陶瓷；重复进行熔化凝固过程，得到Al2O3/GdAlO3共晶陶瓷；所述CO2激光增材制造方法的扫描速率为48～240mm/min，激光功率为300～500W。本发明采用CO2激光增材制造方法，并将扫描速率和激光功率控制在上述范围内，使制备得到的Al2O3/GdAlO3共晶陶瓷尺寸大且组织致密，本发明制备得到的Al2O3/GdAlO3共晶陶瓷的共晶层片间距可达0.2μm。
Alumina/GAP eutectic ceramic and preparation method thereof
The invention provides a preparation method of Al2O3/GdAlO3 eutectic ceramic, the preparation method comprises the following steps: mixing Al2O3 powder and Gd2O3 powder according to a eutectic ratio, and granulating to obtain spherical powder particles; melting and solidifying the spherical powder particles by adopting a CO2 laser additive manufacturing method to obtain single-layer eutectic ceramic; repeating the melting and solidification process, and obtaining the Al2O3/GdAlO3 eutectic ceramic; according to the CO2 laser additive manufacturing method, the scanning rate ranges from 48 mm/min to 240 mm/min, and the laser power ranges from 300 W to 500 W. The CO2 laser additive manufacturing method is adopted, and the scanning rate and the laser power are controlled within the range so that the prepared Al2O3/GdAlO3 eutectic ceramic is large in size and compact in structure, and the eutectic lamellar spacing of the prepared Al2O3/GdAlO3 eutectic ceramic can reach 0.2 mu m.
本发明提供了一种Al2O3/GdAlO3共晶陶瓷的制备方法，包括以下步骤：将Al2O3粉末和Gd2O3粉末按共晶配比混合后制粒，得到球形粉末颗粒；采用CO2激光增材制造方法将所述球形粉末颗粒熔化凝固，得到单层共晶陶瓷；重复进行熔化凝固过程，得到Al2O3/GdAlO3共晶陶瓷；所述CO2激光增材制造方法的扫描速率为48～240mm/min，激光功率为300～500W。本发明采用CO2激光增材制造方法，并将扫描速率和激光功率控制在上述范围内，使制备得到的Al2O3/GdAlO3共晶陶瓷尺寸大且组织致密，本发明制备得到的Al2O3/GdAlO3共晶陶瓷的共晶层片间距可达0.2μm。
Alumina/GAP eutectic ceramic and preparation method thereof
一种氧化铝/GAP共晶陶瓷及其制备方法
SU HAIJUN (author) / SHEN ZHONGLIN (author) / LIU HAIFANG (author) / ZHAO DI (author) / LIU YUAN (author) / GUO MIN (author) / ZHANG JUN (author) / LIU LIN (author) / FU HENGZHI (author)
2021-08-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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