EROSION-CORROSION OF Fe3Al-BASED ALLOYS IN AIR FLOW CONTAINING SO2 AND SiO2 PARTICLES

J Chin Soc Corr Pro

2000, Vol. 20

Issue (3): 155-160 DOI:

Research Report

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EROSION-CORROSION OF Fe3Al-BASED ALLOYS IN AIR FLOW CONTAINING SO2 AND SiO2 PARTICLES

Min Fan;Xinquan Yu;Yangshan Sun

东南大学材料系

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Abstract The erosion-corrosion resistance of some Fe3-Al-based alloys at high temperatures was investigated.Erosion-xorrosion experiments were performed in a horizontal systen through which the high temperature air floww containing highly concentrated SO2 and SiO2 particles was blasted off.The results indicated that Fe3-A;-based alloys had much higher erosion-corrosion resistance than nickel-and cobalt-based alloys at temperature between 600-800℃.SEM observations on the eroded specimens of different alloys revealed that the erosion-corrosion of Fe3Al-based alloys was associated with flake formation.For nickel and cobalt-based alloys,the surface of eroded specimens showed ploughing morphology. Small amount addition of tungsten, molybdenum or niobium to the Fe3Al-based alloys resulted in the further increase in the erosion-corrosion resistance.

Key words: Fe3Al erosion-corrosion high temperature

Received: 24 May 1999

ZTFLH:

TG142.72

Corresponding Authors: Min Fan

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Min Fan; Xinquan Yu; Yangshan Sun. EROSION-CORROSION OF Fe3Al-BASED ALLOYS IN AIR FLOW CONTAINING SO2 AND SiO2 PARTICLES. J Chin Soc Corr Pro, 2000, 20(3): 155-160 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2000/V20/I3/155

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