摘要:
A material alloy for an iron-based rare earth magnet is represented by the general formula of (Fe 1-m T m ) 100-x-y-z-n (B 1-p C p ) x R y Ti z M n . T is Co and/or Ni; R is at least one element selected from Y (yttrium) and the rare earth elements; and M is at least one element selected from Al, Si, V, Cr, Mn, Ni, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb, wherein the following inequalities are satisfied: 10 6 ≦ y
摘要:
To make a raw alloy, consisting mostly of amorphous structure, highly productively and at a reduced cost for a nanocomposite magnet, a molten alloy represented by Fe 100-x-y-z R x Q y M z (where R is at least one element selected from Pr, Nd, Dy and Tb; Q is B and/or C; M is at least one element selected from Co, Al, Si, Ti, V, Cr, Mn, Ni, Cu, Ga, Zr, Nb, Mo, Ag, Pt, Au and Pb; and 1 at%≦x
摘要翻译:为了制备主要由非晶结构组成的原料合金,以高成本且成本低廉的纳米复合磁体,由Fe 100-xy z R x Q y M z(其中R是至少一种选自Pr ,Nd,Dy和Tb; Q为B和/或C; M为选自Co,Al,Si,Ti,V,Cr,Mn,Ni,Cu,Ga,Zr,Nb,Mo,Ag ,Pt,Au和Pb; 1%%| x <6 at%,15 at%‰| 30 at%,0 at%‰| 7 at%)。 该熔融合金通过带钢铸造工艺快速冷却,其中将合金进料到冷却辊上,以3m / s的圆周速度旋转至小于20m / s,以每单位接触宽度0.2的进料速率 kg / min / cm〜5.2kg / min / cm。 以这种方式,可以获得包含至少60体积%的非晶相的合金。
摘要:
The iron-based rare-earth nanocomposite magnet of the present invention has a composition T 100-x-y-z-n Q x R y Ti z M n , where T is Fe or a transition metal element in which Fe is partially replaced by Co and/or Ni; Q is B and/or C; R is at least one rare-earth element including substantially no La or Ce; and M is at least one metal element selected from Al, Si, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb. x, y, z and n satisfy 5 ≦ x ≦ 10 at%, 7≦y≦10 at%, 0.1≦z≦5 at% and 0≦n≦10 at%, respectively. The magnet includes R 2 Fe 14 B-type compound phases and α -Fe phases forming a magnetically coupled nanocomposite magnet structure. The R 2 Fe 14 B-type compound phases have an average crystal grain size of 30 nm to 300 nm and the α-Fe phases have an average crystal grain size of 1 nm to 20 nm. The magnet has magnetic properties including a coercivity of at least 400 kA/m and a remanence of at least 0.9 T.
摘要翻译:本发明的铁基稀土纳米复合磁体具有组成T 100-xyzn Q x R y Ti z M n,其中T是Fe或其中Fe被Co和/或Ni部分替代的过渡金属元素 ; Q是B和/或C; R是至少一种稀土元素,其基本上不含La或Ce; M是选自Al,Si,V,Cr,Mn,Cu,Zn,Ga,Zr,Nb,Mo,Ag,Hf,Ta,W,Pt,Au和Pb中的至少一种金属元素。 x,y,z和n分别满足5‰| x‰| 10 at%,7‰|‰| 10 at%,0.1‰| z‰| 5 at%和0‰|‰| 10 at%。 磁体包括形成磁耦合纳米复合磁体结构的R 2 Fe 14 B型化合物相和±-Fe相。 R 2 Fe 14 B型化合物相的平均结晶粒径为30nm〜300nm,±Fe相的平均结晶粒径为1nm〜20nm。 该磁体具有包括至少400kA / m的矫顽力和至少0.9T的剩磁的磁性。