Journal of Powder Materials

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The Effects of Kaolin Addition on the Properties of Reticulated Porous Diatomite-kaolin Composites: Chae-Young Lee, Sujin Lee, Jang-Hoon Ha, Jongman Lee, In-Hyuck Song, Kyoung-Seok Moon; J Korean Powder Metall Inst. 2020;27(4):325-332. Published online August 1, 2020; DOI: https://doi.org/10.4150/KPMI.2020.27.4.325

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Abstract PDF: In this study, the effects of kaolin addition on the properties of reticulated porous diatomite-kaolin composites are investigated. A reticulated porous diatomite-kaolin composite is prepared using the replica template method. The microstructure and pore characteristics of the reticulated porous diatomite-kaolin composites are analyzed by controlling the PPI value (45, 60, and 80 PPI) of the polyurethane foam (which are used as the polymer template), the ball-milling time (8 and 24 h), and the amount of kaolin (0–50 wt. %). The average pore size decreases as the amount of kaolin increases in the reticulated porous diatomite-kaolin composite. As the amount of kaolin increases, it can be determined that the amount of inter-connected pore channels is reduced because the plate-shaped kaolin particles connect the gaps between irregular diatomite particles. Consequently, a higher kaolin percentage affects the overall mechanical properties by improving the pore channel connectivity. The effect of kaolin addition on the basic properties of the reticulated porous diatomite-kaolin composite is further discussed with characterization data such as pore size distribution, scanning electron microscopy images, and compressive strength.

Processing Methods for the Preparation of Porous Ceramics: Rizwan Ahmad, Jang-Hoon Ha, In-Hyuck Song; J Korean Powder Metall Inst. 2014;21(5):389-398. Published online October 1, 2014; DOI: https://doi.org/10.4150/KPMI.2014.21.5.389

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Macroporous ceramics with tailored pore size and shape could be used for well-established and emerging applications, such as molten metal filtration, biomaterial, catalysis, thermal insulation, hot gas filtration and diesel particulate filters. In these applications, unique properties of porous materials were required which could be achieved through the incorporation of macro-pores into ceramics. In this article, we reviewed the main processing techniques which can be used for the fabrication of macroporous ceramics with tailored microstructure. Partial sintering, replica templates, sacrificial fugutives, and direct foaming techniques was described here and compared in terms of micro-structures and mechanical properties that could be achieved. The main focus was given to the direct foaming technique which was simple and versatile approach that allowed the fabrication of macro-porous ceramics with tailored features and properties.

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Materials Today Sustainability.2024; 27: 100824. CrossRef
Investigating mass transfer coefficients in lean methane combustion reaction through the morphological and geometric analysis of structured open cell foam catalysts
Carmen W. Moncada Quintero, Hernan G. Mazzei, Marion Servel, Frédéric Augier, Yacine Haroun, Jean-François Joly, Stefania Specchia
Chemical Engineering Science.2023; 281: 119138. CrossRef
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Development of high strength large open porosity alumina ceramics using the sacrificial phase route: The role of the sacrificial phase fineness
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Ceramics International.2023; 49(2): 2923. CrossRef
Sustainable nanocomposite porous absorbent and membrane sieves: Definition, classification, history, properties, synthesis, applications, and future prospects
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Yesica L. Bruni, María S. Conconi, María F. Hernández, Gustavo Suárez
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Yunzi Xin, Takashi Shirai
Journal of the Ceramic Society of Japan.2022; 130(5): 355. CrossRef
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Ismail Barbaros, Yongmin Yang, Babak Safaei, Zhicheng Yang, Zhaoye Qin, Mohammed Asmael
Nanotechnology Reviews.2022; 11(1): 321. CrossRef
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Ahmed Abdulrazzaq Hadi, Ali Abdulkhabeer Ali
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Ceramics - Silikaty.2021; : 368. CrossRef
Recycling food, agricultural, and industrial wastes as pore-forming agents for sustainable porous ceramic production: A review
Siti Zuliana Salleh, Afiqah Awang Kechik, Abdul Hafidz Yusoff, Mustaffa Ali Azhar Taib, Maryana Mohamad Nor, Mardawani Mohamad, Tse Guan Tan, Arlina Ali, Mohamad Najmi Masri, Julie Juliewatty Mohamed, Siti Koriah Zakaria, Jia Geng Boon, Faisal Budiman, Pa
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Yunzi Xin, Sohei Nakagawa, Harumitsu Nishikawa, Takashi Shirai
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Fabrication of porous titania sheet via tape casting: Microstructure and water permeability study
Saber Ghannadi, Hossein Abdizadeh, Alireza Babaei
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Farklı Bağlayıcı ve Sinterleme Katkılarının SiC Seramik Prefom Mikroyapısı Üzerine Etkisi
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Academic Perspective Procedia.2019; 2(3): 1309. CrossRef
The preparation and characterization of porous alumina ceramics using an eco‐friendly pore‐forming agent
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Wet Foam Stability from Colloidal Suspension to Porous Ceramics: A Review
Ik Jin Kim, Jung Gyu Park, Young Han Han, Suk Young Kim, James F. Shackelford
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Processing of porous alumina by foaming method-effect of foaming agent, solid loading and binder
Soumya Devavarapu, Paritosh Chaudhuri, Aroh Shrivastava, Santanu Bhattacharyya
Ceramics International.2019; 45(9): 12264. CrossRef
Macroporous flexible polyvinyl alcohol lithium adsorbent foam composite prepared via surfactant blending and cryo-desiccation
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Research Trend of Ceramic Filter for Water Treatment: In-Hyuck Song, Jang-Hoon Ha, Byungseo Bae, Young-Jo Park, Jae-Woong Ko, Youn-Kyoung Baek, Young-Kuk Kim, Jung-Goo Lee, Yoo-Dong Hahn; J Korean Powder Metall Inst. 2014;21(1):62-71. Published online February 1, 2014; DOI: https://doi.org/10.4150/KPMI.2014.21.1.62

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Application of Physical and Chemical Enhanced Backwashing to Reduce Membrane Fouling in the Water Treatment Process Using Ceramic Membranes
Seogyeong Park, Joon-Seok Kang, Jeong Jun Lee, Thi-Kim-Quyen Vo, Han-Seung Kim
Membranes.2018; 8(4): 110. CrossRef
Effects of particle size and forming pressure on pore properties of Fe-Cr-Al porous metal by pressureless sintering
Bon-Uk Koo, Yujeong Yi, Minjeong Lee, Byoung-Kee Kim
Metals and Materials International.2017; 23(2): 336. CrossRef
Characterization and Microstructure of an Extruded Flat-Tubular-Type Alumina Filter
Byung-Seo Bae, Jang-Hoon Ha, In-Hyuck Song
Journal of the Korean Ceramic Society.2014; 51(5): 406. CrossRef

Characterization of the Silica Coated Diatomite Based Ceramic Filter for Water Treatment: Byung-Seo Bae, Jang-Hoon Ha, In-Hyuck Song, Yoo-Dong Hahn; J Korean Powder Metall Inst. 2014;21(1):21-27. Published online February 1, 2014; DOI: https://doi.org/10.4150/KPMI.2014.21.1.21

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Abstract PDF: In this study, diatomite based materials were investigated as a support filter for silica particle coating. The silica sol for coating was synthesized by a stöber process. The diatomite support was dry-pressed at 10 MPa and sintered at 1200°C for 1 hour. The coating sol was prepared as a mixture of EtOH and silica sol. The diatomite support was coated by a dip-coating process. Silica coated diatomite filter was sintered at 1000~1200°C for 1 hour. The largest pore size was decreased with increasing concentration ratio of coating sol. The gas and water permeability of silica coated diatomite decreased with increasing of concentration ratio of the coating sol.

The Effect of Processing Conditions on the Gradient Pore Structure of Diatomite by Centrifugal Molding: Jang-Hoon Ha, Eun-Ji Oh, Rizwan Ahmad, In-Hyuck Song; J Korean Powder Metall Inst. 2012;19(4):304-309.; DOI: https://doi.org/10.4150/KPMI.2012.19.4.304

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The purpose of our study was to develop the fabrication method of porous diatomite ceramics with a porosity gradient by centrifugal molding. The processing variables of centrifugal molding were derived from Stoke's law of sedimentation, which were the radius of the particles, the acceleration due to centrifugal molding and the dynamic viscosity of the slurry. And these could be controlled by ball-milling conditions, centrifugal conditions, and the addition of methyl cellulose, respectively. The effects of processing conditions on the gradient pore structure of diatomite were investigated by particle size analysis, scanning electron microscope, and mercury porosimeter.

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Effect of the processing conditions of reticulated porous alumina on the compressive strength
Chae-Young Lee, Sujin Lee, Jang-Hoon Ha, Jongman Lee, In-Hyuck Song, Kyoung-Seok Moon
Journal of the Korean Ceramic Society.2021; 58(4): 495. CrossRef
Preparation and characterization of alumina-coated silicon carbide supports
Jang-Hoon Ha, Sujin Lee, Syed Zaighum Abbas Bukhari, Jae Ryung Choi, Jongman Lee, In-Hyuck Song, Seung Jun Lee, Jaeho Choi
Ceramics International.2017; 43(12): 9481. CrossRef

Effect of Process Conditions on the Microstructure of Particle-Stabilized Al₂O₃ Foam: Rizwan Ahmad, Jang-Hoon Ha, Yoo-Dong Hahn, In-Hyuck Song; J Korean Powder Metall Inst. 2012;19(4):278-284.; DOI: https://doi.org/10.4150/KPMI.2012.19.4.278

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Al_2O_3 foam is an important engineering material because of its exceptional high-temperature stability, low thermal conductivity, good wear resistance, and stability in hostile chemical environment. In this work, Al_2O_3 foams were designed to control the microstructure, porosity, and cell size by varying different parameters such as the amount of amphiphile, solid loading, and stirring speed. Particle stabilized direct foaming technique was used and the Al_2O_3 particles were partially hydrophobized upon the adsorption of valeric acid on particles surface. The foam stability was drastically improved when these particles were irreversibly adsorbed at the air/water interface. However, there is still considerable ambiguity with regard to the effect of process parameters on the microstructure of particle-stabilized foam. In this study, the Al_2O_3 foam with open and closed-cell structure, cell size ranging from 20µm to 300µm having single strut wall and porosity from 75% to 93% were successfully fabricated by sintering at 1600°C for 2 h in air.

Citations

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A Fatigue Fracture Study on TDCB Aluminum Foam Specimen of Type Mode III Bonded with Adhesive
J.H. Lee, J.U. Cho
Archives of Metallurgy and Materials.2017; 62(2): 1359. CrossRef
Torsion Property of the Structure Bonded Aluminum Foam Due to Impact
G.W. Hwang, J.U. Cho
Archives of Metallurgy and Materials.2017; 62(2): 1353. CrossRef
Experimental Study On Fracture Property Of Double Cantilever Beam Specimen With Aluminum Foam
Y.C. Kim, H.K. Choi, J.U. Cho
Archives of Metallurgy and Materials.2015; 60(2): 1151. CrossRef
Experimental Study On Fracture Property Of Tapered Double Cantilever Beam Specimen With Aluminum Foam
Y.C. Kim, S.S. Kim, J.U. Cho
Archives of Metallurgy and Materials.2015; 60(2): 1459. CrossRef
Processing Methods for the Preparation of Porous Ceramics
Rizwan Ahmad, Jang-Hoon Ha, In-Hyuck Song
Journal of Korean Powder Metallurgy Institute.2014; 21(5): 389. CrossRef
Effect of valeric acid on the agglomeration of zirconia particles and effects of the sintering temperature on the strut wall thickness of particle-stabilized foam
Rizwan Ahmad, Jang-Hoon Ha, In-Hyuck Song
Journal of the European Ceramic Society.2014; 34(5): 1303. CrossRef

Effect of Pore Formers and Sintering Temperatures on Microstructure and Bending Strength of the Porous Zirconia Ceramics: Eun-Jung Lee, In-Hyuck Song, Jang-Hoon Ha, Yoo-Dong Hahn, Yang-Do Kim; J Korean Powder Metall Inst. 2011;18(6):502-509.; DOI: https://doi.org/10.4150/KPMI.2011.18.6.502

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Abstract PDF: In this study, a novel-processing route for fabricating microcellular zirconia ceramics has been developed. The proposed strategy for making the microcellula zirconia ceramics involved hollow microspheres as pore former. Compared to conventional dense microspheres pore former, well-defined pore structured zirconia ceramics were successfully fabricated. Effects of hollow microsphere content and sintering temperature on microstructure, porosity, pore distribution, and strength were investigated in the processing of microcellular zirconia ceramics.

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