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2022 Vol.32, Issue 2 Preview Page
Preparation of Porous Mullite-Corundum Ceramics Via Organic Foam Impregnation
Xianzhi Zhou
,
Shaofeng Zhu†
,
Yuxi Wang
,
Tong Zhang
School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei, 230000, China
†Corresponding author E-Mail : zhusf@ahjzu.edu.cn (S. Zhu, Anhui Jianzhu Univ.)
February 2022. pp. 85-93
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Abstract

Porous mullite-corundum ceramics were prepared using organic foam impregnation method with alumina and silica as raw materials. The influence of alkaline treatment and surfactant modification on polyurethane foam were studied. Effects of sintering process and material composition on porous mullite-corundum ceramics were investigated. The results show that the hang-pulp quantity of polyurethane foam increases with alkaline treatment. After treatment with 3 wt% SDS solution, the hang-pulp quantity of polyurethane foam further improved. Open porosity of sample decreased with elevation of sintering temperature and holding time, and compressive strength of sample showed a trend opposite to the change of porosity. The open porosity of the sample was enhanced by the increase of m(Al2O3/SiO2); the compressive strength decreased with increase of m(Al2O3/SiO2). However, when m(Al2O3/SiO2) was 2.5, the compressive strength of the sample reached 6.23 MPa, and the open porosity of the sample was 80.7 %.

Keywords
organic foam impregnation
mullite-corundum
porous ceramics
sintering
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 32
  • No :2
  • Pages :85-93
  • Received Date : 2021-11-02
  • Revised Date : 2022-01-25
  • Accepted Date : 2022-01-26
  • DOI :https://doi.org/10.3740/MRSK.2022.32.2.85
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