摘要
It is indicated that the initial layer of RE-B-Al permeation is mainly composed of Fe2B by means of TEM and EDAX, and (RE0.65 Feo0.35) 23B6 is found after RE permeation for 4 h. (Fe0.8, RE0.2)6B is found in the layer of RE-B-Al permeation and the distance of crystal face of α-Fe is enlarged. The mechanism of formation of boride was analyzed. Prevention of compounds, such as Al, C etc., on dislocation movement, strengthening of grain boundary, dislocation and solution are responsible for the properties in the permeation layer.
It is indicated that the initial layer of RE-B-Al permeation is mainly composed of Fe2B by means of TEM and EDAX, and (RE0.65 Feo0.35) 23B6 is found after RE permeation for 4 h. (Fe0.8, RE0.2)6B is found in the layer of RE-B-Al permeation and the distance of crystal face of α-Fe is enlarged. The mechanism of formation of boride was analyzed. Prevention of compounds, such as Al, C etc., on dislocation movement, strengthening of grain boundary, dislocation and solution are responsible for the properties in the permeation layer.
