Strengthening Binders for Porous Permeable Ceramic with Electromelted Corundum Filler


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Strong porous permeable ceramic is studied, prepared by selection of grain size compositions with filler of electromelted corundum grades F600 (100 – 200 μm), F360 (40 – 60 μm), and F120 (10 – 20 μm). The strengthening binders used are very fine corundum powder (~2 μm), alloyed with 0.25 wt.% MgO; a mixture of SiC (particle size 3 – 4 μm) and MgO (particle size 1 – 2 μm) in a ratio of 2:1. Specimens in the form of bars 60 × 15 × 5.5 mm are prepared by uniaxial semidry compaction under a pressure of 50 MPa (for single fraction compositions) and 25 MPa (for three-fraction compositions). Specimens are fired in air at temperatures from 1350 to 1550°C. Specimen open porosity varies from 28 to 43%, and ultimate strength in bending from 1 to 36 MPa. The best strength is obtained using a binder in the system SiC–MgO (5 wt.% binder above 100% of filler, σben = 36 MPa, and open porosity is 30%).

作者简介

A. Belyakov

FGBOU VO D. I. Mendeleev Russian Chemical Technological University

编辑信件的主要联系方式.
Email: av_bel@bk.ru
俄罗斯联邦, Moscow

Zaw Oo

FGBOU VO D. I. Mendeleev Russian Chemical Technological University

Email: av_bel@bk.ru
俄罗斯联邦, Moscow

N. Popova

FGBOU VO D. I. Mendeleev Russian Chemical Technological University

Email: av_bel@bk.ru
俄罗斯联邦, Moscow

Ye Min

FGBOU VO D. I. Mendeleev Russian Chemical Technological University

Email: av_bel@bk.ru
俄罗斯联邦, Moscow

V. Karimova

FGBOU VO D. I. Mendeleev Russian Chemical Technological University

Email: av_bel@bk.ru
俄罗斯联邦, Moscow

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