A review: 3D printing of microwave absorption ceramics

Abstract

Along with extensive research on the 3D printing and microwave absorption ceramics, 3D printing technology provides a great possibility for microwave absorption ceramics with arbitrary shapes in a faster, cheaper and more flexible way. This review focuses on the latest evolution in the raw materials, the structure design and the advanced additive manufacturing technologies of 3D printing microwave absorption ceramics. Firstly, the representative raw materials are divided into three categories, including ceramic powder, cermet powder and precursor resin. In addition, additives give rise to improvement of microwave absorption properties of ceramics. Secondly, based on two attenuation theories, structure design makes further efforts to enhance the microwave absorption performance of ceramics. Finally, comparisons are made between diversified manufacturing technologies to facilitate the selection of the best ones for different application in practical use. This study presents a summary of research that has been conducted to produce microwave absorption ceramics by additive manufacturing.

Multifunctional Metamaterial Microwave Blackbody with High‐Frequency Compatibility, Temperature Insensitivity, and Structural Scalability

“…High wear resistance is essential to ensure long‐term service under a challenging application environment, and therefore the wear resistance of the parts was investigated further, including the friction coefficient and wear rate. [ 34 ] The lubrication properties of solid SiOC and SiOC@Si 3 N 4 are demonstrated in Figure 5c, with respective average friction coefficients of 0.297 and 0.488, where the greater friction coefficient of SiOC@Si 3 N 4 is mostly related to the rougher surface morphology, as evidenced in Figure 2h‐i. The wear rate ( W R , mm 3 /N·m) can be calculated with the following equation: [ 35 ] $$\[ \begin{array}{*{20}{c}}{{W_R} = \Delta V{\rm{/}}\left( {{F_N}L} \right)}\end{array} \]$$where Δ V is the wear volume (mm 3 ), F N is the normal loading force (5N here), and L is the total sliding distance (14.4 m here).…”

“…Furthermore, derived from the advantageous intrinsic features of substrate constituent materials, SiOC@Si 3 N 4 MMBs are expected to possess good corrosion resistance and high‐temperature oxidation resistance. [ 19,34,36 ]…”

Applications and Techniques for Fast Machine Learning in Science

“…This directive has led to a boom in non-equilibrium materials synthesis techniques. Most exciting are additive synthesis and manufacturing techniques, for example, 3d-printing (Visser et al, 2015 ; Parekh et al, 2016 ; Zarek et al, 2016 ; Ligon et al, 2017 ; Wang et al, 2020c ) and thin film deposition (Richter, 1990 ; Chrisey and Hubler, 1994 ; Kelly and Arnell, 2000 ; Yoshino et al, 2000 ; Park and Sudarshan, 2001 ; George, 2010 ; Marvel et al, 2013 ), where complex nanoscale architectures of materials can be fabricated. To glean insight into synthesis dynamics, there has been a trend to include in situ diagnostics to observe synthesis dynamics (Egelhoff and Jacob, 1989 ; Thomas, 1999 ; Langereis et al, 2007 ; Ojeda-G-P et al, 2017 ).…”

Effect of solid loading and carbon additive on microstructure and mechanical properties of 3D‐printed SiC ceramic

“…4,5 The development of additive manufacturing (3D printing) technology has provided new opportunities to address the abovementioned problems and challenges. [6][7][8] Additive manufacturing can be used to produce extremely complex and accurate 3D ceramic structures. To date, several 3D printing processes have been proposed to prepare ceramic parts, such as selective laser sintering, [9][10][11][12][13][14][15][16][17][18] stereolithography, [19][20][21][22][23][24][25] binder jetting, [26][27][28] fused deposition, 29,30 and direct ink writing (DIW).…”

“…The development of additive manufacturing (3D printing) technology has provided new opportunities to address the abovementioned problems and challenges 6–8 . Additive manufacturing can be used to produce extremely complex and accurate 3D ceramic structures.…”