全高丰度稀土<strong>(Ce, La, Y)-Fe-B</strong>永磁的研究现状和未来发展

全高丰度稀土(Ce, La, Y)-Fe-B永磁的研究现状和未来发展

刘仲武, 周帮, 廖雪峰, 何家毅

Research Status and Future Development of (Ce, La, Y)-Fe-B Permanent Magnets Based on Full High-Abundance Rare Earth Elements

LIU Zhongwu, ZHOU Bang, LIAO Xuefeng, HE Jiayi

表1 Ce₂Fe₁₄B、La₂Fe₁₄B和Y₂Fe₁₄B非晶合金热处理过程中的相析出行为^[19,29,35]

Table 1 Phase precipitation behaviors of Ce₂Fe₁₄B, La₂Fe₁₄B, and Y₂Fe₁₄B amorphous alloys during heating stage^[19,29,35]

Alloy	Phase	Reaction formula	T / ^oC	Ref.
Ce₂Fe₁₄B	α-Fe	Amorphous → α-Fe	513.8	[19]
	Ce₂Fe₁₄B	Amorphous → Ce₂Fe₁₄B	610.9
	α-Fe + Ce₂Fe₁₄B + Fe _x B	Amorphous → α-Fe + Ce₂Fe₁₄B + Fe _x B	689.9
	L + γ-Fe + Fe₂B	Ce₂Fe₁₄B→L + γ-Fe + Fe₂B	966.9
	L′	Ce₂Fe₁₄B→L′	1047.1
	γ-Fe + Fe₂B	L″→γ-Fe + Fe₂B	1056.5
	L′′′	γ-Fe + Fe₂B→L′′′	1167.7
Y₂Fe₁₄B	α-Fe	Amorphous → α-Fe	329.2	[29]
	Y₂Fe₁₄B	Amorphous → Y₂Fe₁₄B	622.2
	Fe₃B + Y₂Fe₁₄B	Amorphous → Ce₂Fe₁₄B + Fe₃B	748.3
La₂Fe₁₄B	α-Fe + β-La	Amorphous → α-Fe + β-La	404.1	[35]
	β-La + α-Fe + Fe₂B	Amorphous → β-La + α-La + Fe₂B	487.1
	L	α-Fe + β-La → L	764.7
	L′	γ-Fe + Fe₂B → L′	1168.5