Effects of SiC addition on the structure and properties of reticulated porous mullite ceramics

Akpinar, S.; Altun, I. Akın; Önel, K.

doi:10.1016/j.jeurceramsoc.2010.05.005

Cited by 40 publications

(15 citation statements)

References 12 publications

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“…[25] Opening of the windows can also be achieved by using a defoaming agent. [33][34][35][36][37][38][39][40][41] An overall adjustment of the coating thickness in combination with a high number of open windows can be realized by centrifugation after the coating process was carried out. [23,25,28,41,43] C) Green-body foams: From solidification of the coating slurry on the template foam a green foam results having a low mechanical stability.…”

Section: Bindermentioning

confidence: 99%

“…water [28] AlN PVA water [29] Bioglass 1 PVA water [30] Ca 2 KNa(PO 4 ) 2 -water [31] Ca 5 (OH)(PO 4 ) 3 Acrylamide water [32] Ca 5 (OH)(PO 4 ) 3 Dextrin water [33] Ca 0.95 Sm 0.05 MnO 3 PVA water [34,35] CeO 2 PVA water [36] LZSA glass Bentonite water [37] LZSA glass Bentonite 2-propanol [38] Mullite/SiC CMC, bentonite water [39] Si 3 N 4 CMC water [25] Y 2 BaCuO 5 PVA water [40] a) Based on polyacrylate.…”

Section: Bindermentioning

confidence: 99%

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Reticulated Replica Ceramic Foams: Processing, Functionalization, and Characterization

et al. 2017

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Reticulated ceramic foams are used in a wide range of applications such as filters, catalyst supports, lightweight materials, energy absorptions materials, or as scaffolds for tissue engineering as the most common ones. Based on gaseous foaming processes of polymers, a stochastic distribution of closed pores is obtained. By reticulation processing thin foam windows are removed between cells turning a closed cell into an open cell structure. These foams are used as template for porous ceramics manufacturing: With different processing approaches, for example, with dip coating of a ceramic slurry and a subsequent (multistep) thermal treatment ceramic reticulate foams are obtained. A variety of material properties strongly depend on the cell and strut size, as well on material composition. Functionalization of ceramic foam surfaces (outer surface functionalization), for example, with zeolites or nanosized aggregates lead to an increase of the specific surface area or provides catalytic or heat storage functionality. Filling of struts (inner surface functionalization) may lead to improved mechanical stability or may provide functionalities such as electric conductivity. The present work summarizes the processing steps from the template foam to the final cellular ceramic, functionalization strategies, and the most common characterization techniques.

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Section: Bindermentioning

confidence: 99%

Section: Bindermentioning

confidence: 99%

Reticulated Replica Ceramic Foams: Processing, Functionalization, and Characterization

et al. 2017

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“…Therefore, many researchers have studied reticulated porous ceramics with pore densities of less than 45 PPI. For example, reticulated porous ceramics prepared from various types of ceramic raw materials such as alumina (5 [18] and 20 PPI [19][20][21]), alumina-zirconia composites (20 PPI) [22], aluminum nitride (20 PPI) [23], zirconia (45 PPI) [24], silicon nitride (10 PPI) [11], silicon carbide (8 PPI [25] and 10 PPI [26]), cordierite (10 PPI) [27], and mullite (20 PPI) [28] Prior to coating the polyurethane foam, the alumina slurry was mixed uniformly by ball-milling with alumina balls for 4 h. The viscosity of the alumina slurry was measured using a rotational rheometer (Discovery HR-1, TA Instruments, New Castle, DE, USA) at 25 °C.…”

Section: Resultsmentioning

confidence: 99%

Enhancing Compressive Strength of Reticulated Porous Alumina by Optimizing Processing Conditions

Lee

et al. 2021

Applied Sciences

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Recently, porous ceramics have received much attention from researchers because of their excellent thermal and chemical stabilities compared to their counterparts (such as porous polymers and metals), despite their inferior mechanical instability. Among the various types of porous ceramics, reticulated porous ceramics have significant industrial potential because of their synergistic high porosity and permeability. However, to the best of our knowledge, there is insufficient data on the processing conditions or preparing optimal reticulated porous alumina. Therefore, we prepared and characterized reticulated porous alumina specimens by controlling various processing conditions, namely average particle size, solid loading, binder, and dispersant. The data obtained were used to assess whether the compressive strength of the reticulated porous alumina could be enhanced and to discuss the potential of these materials for various applications.

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“…Therefore, the above-mentioned literatures mostly focused on the study of reticulated porous ceramics with less than 45 PPI. For example, reticulated porous alumina ((5 PPI) [31] and (20 PPI) [3,32,33]), reticulated porous alumina-zirconia composite (20 PPI) [34], reticulated porous aluminum nitride (20 PPI) [4], reticulated silicon nitride (10 PPI) [5], reticulated porous silicon carbide ((8 PPI) [6] and (10 PPI) [7]), reticulated porous zirconia (45 PPI) [8], reticulated porous cordierite (10 PPI) [9], reticulated porous yttrium disilicate (60 PPI) [10], and reticulated porous mullite (20 PPI) [11] have been reported.…”

Section: Resultsmentioning

confidence: 99%

“…However, the inherent low mechanical stability of reticulated porous ceramics which is a disadvantageous legacy of ceramics severely inhibits their application in various fields. The maximum obtainable compressive strengths of reticulated porous ceramics, which it strongly depend on the PPI (pores per inch), are generally low, such as reticulated porous alumina (1.60 MPa) [3], reticulated porous aluminum nitride (1.4 MPa) [4], reticulated silicon nitride (2.67 MPa) [5], reticulated porous silicon carbide ((1.59 ± 0.13 MPa) [6] and (1.08 ± 0.17 MPa) [7]) reticulated porous zirconia (0.85 ± 0.13 MPa) [8], reticulated porous cordierite (0.47 ± 0.02 MPa) [9], reticulated porous yttrium disilicate (1.28 MPa) [10], and reticulated porous mullite (0.62 ± 0.03 MPa) [11]. Therefore, there are two possible ways to enlarge the application fields of reticulated porous ceramics: by minimizing the weak point, and maximizing the strong point.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of a Low-Cost and Natural Material-Based Reticulated Porous Diatomite-Kaolin Composite

Lee

Song

et al. 2020

Applied Sciences

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In recent years, porous ceramics have been increasingly developed owing to their high levels of high-temperature stability and chemical stability. These properties are far superior to porous polymers and porous metals. As a representative porous ceramic, reticulated porous ceramics have been fabricated for several decades owing to their overwhelmingly high porosity, which is usually above 90%. There are growing concerns about the environmental problems. However, the data on the preparation of low-cost and natural material-based reticulated porous ceramics are not enough. Therefore, the authors studied the preparations and characterizations of reticulated porous ceramics prepared using diatomite and kaolin, and compared them to typical reticulated porous alumina. The obtained data were used to determine whether the reticulated porous diatomite-kaolin composite can be practically used in non-hard loading conditions. The structural properties and dielectric breakdown strength of the reticulated porous ceramics were examined using scanning electron microscopy, mercury porosimetry, μ-computed tomography (CT), and standard test apparatus of dielectric breakdown voltage.

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Effects of SiC addition on the structure and properties of reticulated porous mullite ceramics

Cited by 40 publications

References 12 publications

Reticulated Replica Ceramic Foams: Processing, Functionalization, and Characterization

Reticulated Replica Ceramic Foams: Processing, Functionalization, and Characterization

Enhancing Compressive Strength of Reticulated Porous Alumina by Optimizing Processing Conditions

Preparation and Characterization of a Low-Cost and Natural Material-Based Reticulated Porous Diatomite-Kaolin Composite

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