Silicon carbide ceramic wave-absorbing pyramid based on 3D printing and preparation method thereof
A silicon carbide ceramic, 3D printing technology, applied in ceramic molding machines, manufacturing tools, additive processing, etc., can solve problems such as inability to meet test requirements, and achieve the effect of saving sintering costs, diversifying shape and structure, and high development efficiency
Pending Publication Date: 2022-04-12
CHANGPING BEIJING ELECTROMAGNETIC PROTECTION
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Problems solved by technology
[0002] With the increasing demand for high-power testing, for ultra-high-power radar testing, the power density on the absorbing material may reach tens of kilowatts per square meter or even higher. The existing polyurethane, non-woven fabrics, EPS, EPP, Honeycomb pyramids, etc. cannot meet the test requirements under such high power conditions, and urgently need to be improved
Method used
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Embodiment 1
[0034] Example 1: The silicon carbide ceramic wave-absorbing pyramid includes a silicon carbide wave-absorbing mixed powder and a polymer binder, and the silicon carbide wave-absorbing mixed powder includes: SiC 25% to 45%, BaTiO 3 4%~9%, MnO 2 2%~6%, MgO 1%~3%, Al 2 o 3 2%~6%, Y 2 o 3 2% to 6%, and the remaining ingredients are polymer binders.
Embodiment 2
[0035] Embodiment 2: The silicon carbide ceramic wave-absorbing pyramid includes silicon carbide wave-absorbing mixed powder and polymer binder, and the silicon carbide wave-absorbing mixed powder includes: SiC 25%, BaTiO 3 4%, MnO 2 2%, MgO 1%, Al 2 o 3 2%, Y 2 o 3 2%, and the remaining ingredients are polymer binders.
Embodiment 3
[0036]Embodiment 3: The silicon carbide ceramic wave-absorbing pyramid includes silicon carbide wave-absorbing mixed powder and polymer binder, and the silicon carbide wave-absorbing mixed powder includes: SiC 45%, BaTiO 3 9%, MnO 2 6%, MgO 3%, Al 2 o 3 6%, Y 2 o 3 6%, and the remaining ingredients are polymer binders.
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Abstract
The invention discloses a silicon carbide ceramic wave-absorbing pyramid based on 3D printing and a preparation method of the silicon carbide ceramic wave-absorbing pyramid based on 3D printing, silicon carbide wave-absorbing mixed powder and a polymer binder are moderately blended according to the weight percentage, and in the preparation method, a ball mill, a constant-temperature drying box and a vibrating screen are used for obtaining 3D printing powder; and carrying out laser sintering, slicing the wave-absorbing pyramid to form a ceramic green body, and finally obtaining the silicon carbide ceramic wave-absorbing pyramid. The wide-frequency-band high-power high-flame-retardancy high-frequency-band high-absorption high-power high-flame-retardancy high-cleanliness microwave dielectric ceramic has the advantages of being wide in frequency band, high in absorption, high in high-temperature resistance, high in power, high in flame retardancy and high in cleanliness, restrictions of mold forming are The product is suitable for personalized, diversified and customized batch production, a complex hollow structure product can be produced, the development efficiency is high, and great economic value is achieved.
Description
technical field [0001] The invention relates to a wave-absorbing pyramid and a preparation method thereof, in particular to a silicon carbide ceramic wave-absorbing pyramid based on 3D printing and a preparation method thereof. Background technique [0002] With the increasing demand for high-power testing, for ultra-high-power radar testing, the power density on the absorbing material may reach tens of kilowatts per square meter or even higher. The existing polyurethane, non-woven fabrics, EPS, EPP, Honeycomb pyramids and the like cannot meet the test requirements under such high power conditions, and urgently need to be improved. Contents of the invention [0003] The purpose of the present invention is to provide a silicon carbide ceramic absorbing pyramid based on 3D printing and its preparation method, so as to solve the shortcomings of the prior art. [0004] The present invention adopts following technical scheme to realize: [0005] A silicon carbide ceramic wave...
Claims
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Login to View More IPC IPC(8): C04B35/577C04B35/622C04B35/64B28B1/00B33Y70/10B33Y10/00
Inventor 何山李家雨花晓军
Owner CHANGPING BEIJING ELECTROMAGNETIC PROTECTION