Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Silicon nitride ceramic antenna housing and burying and burning method thereof
The invention belongs to the technical field of radome preparation, and particularly relates to a silicon nitride ceramic radome and a burying sintering method thereof, and the burying sintering method comprises the following steps: carrying out the pretreatment of a silicon nitride radome green body obtained through 3D printing; pre-sintering the boron nitride powder; placing the radome green body in a powder burying container, and performing powder burying treatment on the interior and the exterior of the radome green body by using the pre-sintered boron nitride powder; absolute ethyl alcohol is added into the powder burying container; carrying out drying treatment on the powder burying container filled with the radome green body; repeating the steps of burying the powder, adding the absolute ethyl alcohol and drying until the radome green body is completely filled with the dried powder; and sintering the dried powder burying container filled with the radome green body to obtain the silicon nitride ceramic radome. Through the treatment method of burying the powder by using the ethanol wet method, the compactness of the buried powder is improved, and the problems of large shrinkage size effect, asynchronous shrinkage and low structural strength of the silicon nitride antenna housing with the porous sandwich structure can be solved.
本发明属于天线罩制备技术领域，具体地说涉及一种氮化硅陶瓷天线罩及其埋烧方法，所述埋烧方法包括以下步骤：对3D打印制得的氮化硅天线罩坯体进行预处理；对氮化硼粉进行预烧结；将天线罩坯体置于埋粉容器中，使用预烧结后的氮化硼粉对天线罩坯体的内部和外部进行埋粉处理；向埋粉容器中加入无水乙醇；对装有天线罩坯体的埋粉容器进行干燥处理；重复上述埋粉‑加入无水乙醇‑干燥步骤，直至干燥后的粉体完全填充天线罩坯体；对干燥后的装有天线罩坯体的埋粉容器进行烧结处理，得到氮化硅陶瓷天线罩。通过使用乙醇湿法埋粉的处理方法，提高了埋粉的致密程度，能够解决多孔夹层结构氮化硅天线罩收缩尺寸效应大、收缩不同步、结构强度低的问题。
Silicon nitride ceramic antenna housing and burying and burning method thereof
The invention belongs to the technical field of radome preparation, and particularly relates to a silicon nitride ceramic radome and a burying sintering method thereof, and the burying sintering method comprises the following steps: carrying out the pretreatment of a silicon nitride radome green body obtained through 3D printing; pre-sintering the boron nitride powder; placing the radome green body in a powder burying container, and performing powder burying treatment on the interior and the exterior of the radome green body by using the pre-sintered boron nitride powder; absolute ethyl alcohol is added into the powder burying container; carrying out drying treatment on the powder burying container filled with the radome green body; repeating the steps of burying the powder, adding the absolute ethyl alcohol and drying until the radome green body is completely filled with the dried powder; and sintering the dried powder burying container filled with the radome green body to obtain the silicon nitride ceramic radome. Through the treatment method of burying the powder by using the ethanol wet method, the compactness of the buried powder is improved, and the problems of large shrinkage size effect, asynchronous shrinkage and low structural strength of the silicon nitride antenna housing with the porous sandwich structure can be solved.
本发明属于天线罩制备技术领域，具体地说涉及一种氮化硅陶瓷天线罩及其埋烧方法，所述埋烧方法包括以下步骤：对3D打印制得的氮化硅天线罩坯体进行预处理；对氮化硼粉进行预烧结；将天线罩坯体置于埋粉容器中，使用预烧结后的氮化硼粉对天线罩坯体的内部和外部进行埋粉处理；向埋粉容器中加入无水乙醇；对装有天线罩坯体的埋粉容器进行干燥处理；重复上述埋粉‑加入无水乙醇‑干燥步骤，直至干燥后的粉体完全填充天线罩坯体；对干燥后的装有天线罩坯体的埋粉容器进行烧结处理，得到氮化硅陶瓷天线罩。通过使用乙醇湿法埋粉的处理方法，提高了埋粉的致密程度，能够解决多孔夹层结构氮化硅天线罩收缩尺寸效应大、收缩不同步、结构强度低的问题。
Silicon nitride ceramic antenna housing and burying and burning method thereof
一种氮化硅陶瓷天线罩及其埋烧方法
WANG FEI (Autor:in) / LI LING (Autor:in) / WANG YINGYING (Autor:in) / SONG TAO (Autor:in) / XU XIANBAO (Autor:in) / SUI SONGLIN (Autor:in) / LI WEI (Autor:in) / WANG XIAODONG (Autor:in)
19.03.2024
Patent
Elektronische Ressource
Chinesisch
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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