Structure and Physicomechanical Properties of Porous Ceramic Based on Al2O3 Prepared Using a Filtration Combustion Method
- 作者: Ivanov D.A.1, Shlyapin S.D.1, Val’yano G.E.2, Fedorova L.V.1
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隶属关系:
- Moscow Aviation Institute (National Research University)
- FGBUN Russian Academy of Sciences Joint Institute of High temperatures
- 期: 卷 58, 编号 5 (2018)
- 页面: 538-541
- 栏目: Article
- URL: https://journal-vniispk.ru/1083-4877/article/view/248909
- DOI: https://doi.org/10.1007/s11148-018-0140-5
- ID: 248909
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详细
Atechnological approach is proposed making it possible to prepare highly porous ceramic based on Al2O3 using a method of filtration combustion (FC). The method is based on an exothermic oxidation reaction (in an FC regime) of aluminum powder PAP-2 particles mixed with spherulites of commercial alumina (type 1 material) or kaolin fibers (type 2 material). Depending on the volume faction of PAP-2 open porosity for sintered type 1 material is from 38 to 50%, and ultimate strength in bending is from 10 to 50 MPa. Good material thermal shock resistance, evaluated from the relative loss of crack resistance after thermal cycling by a regime of heating to 850°C and cooling in an air stream (18°C), comprises 12 – 15% and is unchanged after five successive thermal cycles. Material of type 2 is an ultra-lightweight heat insulator with density of 0.25 – 0.50 g/cm3. The bearing strength is 0.10 – 0.15 MPa, and thermal conductivity in the range 20 to 1000°C is 0.06 – 0.17 W/(m·K).
作者简介
D. Ivanov
Moscow Aviation Institute (National Research University)
编辑信件的主要联系方式.
Email: dali_888@mail.ru
俄罗斯联邦, Moscow
S. Shlyapin
Moscow Aviation Institute (National Research University)
Email: dali_888@mail.ru
俄罗斯联邦, Moscow
G. Val’yano
FGBUN Russian Academy of Sciences Joint Institute of High temperatures
Email: dali_888@mail.ru
俄罗斯联邦, Moscow
L. Fedorova
Moscow Aviation Institute (National Research University)
Email: dali_888@mail.ru
俄罗斯联邦, Moscow
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