Fabrication of Porous Al2O3-(m-ZrO2) Composites and Al2O3-(m-ZrO2)/PMMA Hybrid Composites by Infiltration Process

Lee, Byong‐Taek; Quang, Do Van; Song, Ho‐Yeon

doi:10.4191/kcers.2007.44.6.291

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…Lee prepared alumina-aluminium borate (Al 2 O 3 •B 2 O 3 ) composites via the SLS and the infiltration had different infiltrants, such as alumina sol, chromic acid and colloidal silica, to enhance the density and bend strength of composites. The infiltration with colloidal silica into this compositions showed the optimal properties with a maximum strength of 33 MPa and a theoretical density of 75% [87,88]. Wohlert et al [89] infiltrated SiC ceramic preforms with magnesium alloys to achieve the structural parts with high strength and high thermal conductivity, which could be used for electronic packaging from the thermomechanical analysis.…”

Section: Process Parameters Of the Sls Forming Methodsmentioning

confidence: 99%

High-performance ceramic parts with complex shape prepared by selective laser sintering: a review

Chen

Liu

et al. 2017

Advances in Applied Ceramics

145

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Selective laser sintering (SLS) is an additive manufacturing technology which has shown great advantages in direct formation of the polymer, metal and their composites. However, ceramic parts prepared by the SLS still exhibit some fatal defects, including low density and poor mechanical properties. In this respect, recent advances for preparing ceramics have improved the final density and performance by adopting post-processing methods. In this review, three commonly used powder preparation approaches (i.e. mechanical mixing, solvent evaporation and dissolution-precipitation process) and two powder sintering mechanisms for the SLS are introduced. Porous ceramic parts are prepared directly through the SLS by virtue of their high porosity. And dense, high-performance Al 2 O 3 , ZrO 2 , kaolin and SiC ceramic parts with complex shape are prepared by introducing CIP technology into the SLS, indicating that the hybrid technology could be the promising route for preparing highperformance ceramic parts used in various fields.

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Section: Process Parameters Of the Sls Forming Methodsmentioning

confidence: 99%

High-performance ceramic parts with complex shape prepared by selective laser sintering: a review

Chen

Liu

et al. 2017

Advances in Applied Ceramics

145

View full text Add to dashboard Cite

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Fabrication of bioglass infiltrated Al2O3–(m-ZrO2) composites

Song

Sarkar

Kim

et al. 2008

J Mater Sci: Mater Med

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Using 80 vol.% of poly methyl methacrylate (PMMA) as a pore-forming agent to obtain interconnected porous bodies, porous Al(2)O(3)-(m-ZrO(2)) bodies were successfully fabricated. The pores were about 200 microm in diameter and were homogeneously dispersed in the Al(2)O(3)-25 vol.% (m-ZrO(2)) matrix. To obtain Al(2)O(3)-(m-ZrO(2))/bioglass composites, the molten bioglass was infiltrated into porous Al(2)O(3)-(m-ZrO(2)) bodies at 1400 degrees C. The material properties of the Al(2)O(3)-(m-ZrO(2))/bioglass composites, such as relative density, hardness, compressive strength, fracture toughness and elastic modulus were investigated.

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Composition Dependence and Optical Properties of Polymethyl Methacrylate/Alumina Nanocomposite in the IR Region Determined by Kramers-Kronig Relation

Ghamari¹,

Ghasemifard²

2017

J. Korean Ceram. Soc

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The dependence of the IR optical properties of PMMA/Al 2 O 3 nanocomposite on the alumina content was investigated in the wavelength range of 3500-2800 cm − 1. The samples were prepared via emulsion polymerization technique using oleic acid as a coupling agent. Grafting density calculations were carried out by means of elemental analysis CHN to yield the best coupling agent content. FTIR analysis confirmed the existence of a chemical bond between aluminum oxide and oleic acid. The outcomes of XRD analyses showed the presence of cubic gamma aluminum oxide in the nanocomposite, in contrast to the amorphous nature of PMMA. TEM images showed the core-shell morphology of the particles other than pristine PMMA. Optical constants of the nanocomposite were calculated based on FTIR spectra and the Kramers-Kronig equations. The presence of nano alumina modified some of the optical indexes in IR region.

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Fabrication of Porous Al₂O₃-(m-ZrO₂) Composites and Al₂O₃-(m-ZrO₂)/PMMA Hybrid Composites by Infiltration Process

Cited by 3 publications

References 15 publications

High-performance ceramic parts with complex shape prepared by selective laser sintering: a review

High-performance ceramic parts with complex shape prepared by selective laser sintering: a review

Fabrication of bioglass infiltrated Al2O3–(m-ZrO2) composites

Composition Dependence and Optical Properties of Polymethyl Methacrylate/Alumina Nanocomposite in the IR Region Determined by Kramers-Kronig Relation

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