Influence of carbon black on slurry compositions for tape cast porous piezoelectric ceramics

Decreasing the relative permittivity of LTCC by porosification with poly(methyl methacrylate) microspheres

“…This method is limited to top layers only, requires handling of highly corrosive liquids and hot substances and needs to be done as a post-fire process. A more straightforward method to create porosity as reviewed in [7] is the use of sacrificial volume materials (SVM). Different kinds of SVM have been investigated by many authors in the ceramic industry [8][9][10] including poly(methyl methacrylate) (PMMA) for bulks [11][12][13] and for cast tapes [14][15][16].…”

Novel design of alumina foams with three‐dimensional reticular architecture for effective high‐temperature particulate matter capture

“…To overcome these issues, many efforts have been made: one of the most effective strategy is creating micrometer‐size pores inside cell wall incorporated with submicrometer pores to form hierarchical structure. Thanks to its nanoscale and spherical shape, carbon black (CB) has been widely developed as micrometer pore‐forming agent to construct hierarchical structure, promoting the pore interconnectivity of ceramic foams . For instance, Liu et al prepared hierarchical porous alumina ceramic with highly interconnected pores by the introduction of CB as pore‐forming agent.…”

“…Thanks to its nanoscale and spherical shape, carbon black (CB) has been widely developed as micrometer pore-forming agent to construct hierarchical structure, promoting the pore interconnectivity of ceramic foams. 18,19 For instance, Liu et al 18 prepared hierarchical porous alumina ceramic with highly interconnected pores by the introduction of CB as pore-forming agent. Mercadelli et al 19 prepared porous piezoelectric ceramics with hierarchical pore structure by combining CB as pore-forming agents and tape casting technology.…”

“…For instance, Liu et al prepared hierarchical porous alumina ceramic with highly interconnected pores by the introduction of CB as pore‐forming agent. Mercadelli et al prepared porous piezoelectric ceramics with hierarchical pore structure by combining CB as pore‐forming agents and tape casting technology. Nevertheless, the major issue related to direct addition of CB in PU ceramic foam is the agglomeration or inhomogeneous dispersion because of highly viscous PU.…”

Effects of oxidation treatment of Si<sub>3</sub>N<sub>4</sub> on rheology of aqueous suspensions and properties of porous Si<sub>3</sub>N<sub>4</sub> ceramic

“…广 泛 应 用 [1~5] . 常 用 的 湿 法 成 型 技 术 包 括 注 浆 成 型 [6,7] 、凝胶注模成型 [8,9] 、流延成型 [10,11] 、注射成 型 [12,13] 14~17] . Bergström等人 [18] 选用3种通 过不同制备方法和预处理方式获得的氮化硅粉料, 经过表面分析发现, 在3种不同氮化硅粉料表面均存…”