Al<sub>2</sub>O<sub>3</sub>/FeCrNi复合蜂窝载体材料的制备及性能

doi:10.11896/cldb.20120112

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Abstract In order to prepare the Al₂O₃/FeCrNi composite honeycomb carrier materials with excellent performance, FeCrNi alloy powder, Fe₂O₃ powder, Al powder were used as raw materials, the monolithic honeycomb structure was formed by mixing powder, kneading and extruding, then in-situ reaction sintered at 1 200 ℃ for 2 h under the protection of argon gas, and Al₂O₃/FeCrNi composite honeycomb carrier materials was fabricated. With SEM, XRD and universal testing machine, the structure and mechanical property of Al₂O₃/FeCrNi composite honeycomb carrier materials were studied. The results show that the matrix of Al₂O₃/FeCrNi composite honeycomb is γ-Fe(NiCr) after sintering, the Al₂O₃ formed by the in-situ reaction is distributed partly in the grain boundary of the matrix in the form of agglomeration, and partly in the matrix in a circular granular manner; while the mass fraction of Al₂O₃ is lower than 1.5%, the compressive strength of Al₂O₃/FeCrNi composite honeycomb carrier is maintained above 30 MPa; while the mass fraction of Al₂O₃ is higher than 1.5%, the compressive strength of honeycomb carrier decreases rapidly with the increase of Al₂O₃ content; with the mass fraction of Al₂O₃ increasing, the load rate of catalytic active coating on the surface of Al₂O₃/FeCrNi composite honeycomb carrier increases, and the performance of surface load is improved; while the mass fraction of Al₂O₃ is 1.5% and the sintering temperature is at 1 200 ℃, the compressive strength of Al₂O₃/FeCrNi composite honeycomb carrier is as high as 31.5 MPa, and it has strong surface adhesion, solid combination with catalytic active coating, and excellent comprehensive performance.

Key words： FeCrNi alloy aluminium oxide honeycomb carrier in-situ reaction powder plastic extrusion

Published: 10 May 2022 Online: 2022-05-09

CLC number:

TB331

Fund:National Natural Science Foundation of China(51861020,51264024).

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	Articles by authors
	GUO Jianxin
	ZHOU Yun
	WAMG Tianyao
	YAN Jingming
	GUO Lu
	ZUO Xiaoqing

Cite this article:

GUO Jianxin,ZHOU Yun,WAMG Tianyao, et al. Preparation and Property of Al₂O₃/FeCrNi Composite Honeycomb Carrier Materials[J]. Materials Reports, 2022, 36(9): 20120112-6.

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http://www.mater-rep.com/EN/10.11896/cldb.20120112 OR http://www.mater-rep.com/EN/Y2022/V36/I9/20120112

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