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A platform for research: civil engineering, architecture and urbanism
Silicon nitride ceramic antenna housing and additive manufacturing method thereof
The invention discloses a silicon nitride ceramic antenna housing and an additive manufacturing method thereof. The method comprises the following steps: firstly, carrying out spray granulation on silicon nitride powder and a sintering aid, then mixing resin powder and silicon dioxide hollow spheres, then preparing a ceramic green body through SLS in 3D printing, and treating the ceramic green body through a cold isostatic pressing technology, so that the porosity in the ceramic green body is reduced, and the density of the ceramic green body is improved; before cold isostatic pressing, the ceramic body is sleeved with a rubber sleeve, and the rubber sleeve can prevent water or oil from entering the surface of the body in the cold isostatic pressing process; after isostatic cool pressing, ceramic body particles are arranged more tightly, and the density is improved; mechanical properties of the test piece are improved; resin in the ceramic body can be removed through degreasing; finally, the strength and toughness of the silicon nitride ceramic are improved through air pressure sintering; the steps are simple and easy to implement.
本发明公开了一种氮化硅陶瓷天线罩及其增材制造方法。该方法首先将氮化硅粉末和烧结助剂进行喷雾造粒，然后将树脂粉和二氧化硅空心球混合后通过3D打印中的SLS制备出陶瓷坯体，通过冷等静压技术处理陶瓷坯体，降低陶瓷坯体中的孔隙率，提高陶瓷坯体的致密度；冷等静压前，将陶瓷坯体套上橡胶套，橡胶套能够避免冷等静压过程中水或油进入到坯体表面；冷等静压后，陶瓷坯体颗粒之间的排列更为紧密，致密度得到提高；提升试件力学性能；通过脱脂能够去除陶瓷坯体中的树脂；最后通过气压烧结提高氮化硅陶瓷的强度和韧性；步骤简单，易于实现。
Silicon nitride ceramic antenna housing and additive manufacturing method thereof
The invention discloses a silicon nitride ceramic antenna housing and an additive manufacturing method thereof. The method comprises the following steps: firstly, carrying out spray granulation on silicon nitride powder and a sintering aid, then mixing resin powder and silicon dioxide hollow spheres, then preparing a ceramic green body through SLS in 3D printing, and treating the ceramic green body through a cold isostatic pressing technology, so that the porosity in the ceramic green body is reduced, and the density of the ceramic green body is improved; before cold isostatic pressing, the ceramic body is sleeved with a rubber sleeve, and the rubber sleeve can prevent water or oil from entering the surface of the body in the cold isostatic pressing process; after isostatic cool pressing, ceramic body particles are arranged more tightly, and the density is improved; mechanical properties of the test piece are improved; resin in the ceramic body can be removed through degreasing; finally, the strength and toughness of the silicon nitride ceramic are improved through air pressure sintering; the steps are simple and easy to implement.
本发明公开了一种氮化硅陶瓷天线罩及其增材制造方法。该方法首先将氮化硅粉末和烧结助剂进行喷雾造粒，然后将树脂粉和二氧化硅空心球混合后通过3D打印中的SLS制备出陶瓷坯体，通过冷等静压技术处理陶瓷坯体，降低陶瓷坯体中的孔隙率，提高陶瓷坯体的致密度；冷等静压前，将陶瓷坯体套上橡胶套，橡胶套能够避免冷等静压过程中水或油进入到坯体表面；冷等静压后，陶瓷坯体颗粒之间的排列更为紧密，致密度得到提高；提升试件力学性能；通过脱脂能够去除陶瓷坯体中的树脂；最后通过气压烧结提高氮化硅陶瓷的强度和韧性；步骤简单，易于实现。
Silicon nitride ceramic antenna housing and additive manufacturing method thereof
一种氮化硅陶瓷天线罩及其增材制造方法
WANG KEJIE (author) / LU BINGHENG (author) / BAO CHONGGAO (author) / MAN JIYOU (author)
2022-05-06
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
/
H01Q
Antennen
,
ANTENNAS, i.e. RADIO AERIALS
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