CN1056600A - The prescription of Cd rare-earth binding permanent magnet and manufacture method - Google Patents
The prescription of Cd rare-earth binding permanent magnet and manufacture method Download PDFInfo
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- CN1056600A CN1056600A CN 90105108 CN90105108A CN1056600A CN 1056600 A CN1056600 A CN 1056600A CN 90105108 CN90105108 CN 90105108 CN 90105108 A CN90105108 A CN 90105108A CN 1056600 A CN1056600 A CN 1056600A
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Abstract
The invention discloses a kind of prescription and manufacture method thereof of Cd rare-earth binding permanent magnet.The present invention is characterized in to increase cadmium element, make Cd rare-earth binding permanent magnet Nd α B β Cd γ (FeM) 100-alpha-beta-γ with cadmium element as bonding agent, wherein α, β, γ are the weight percent content of each element, Fe accounts for surplus, M is for adding element, according to each element of said ratio by manufacturing process through the hot-forming Cd rare-earth binding permanent magnet of producing.It is good to have heat resistance according to the Cd rare-earth binding permanent magnet of manufacturing of the present invention, the characteristics that magnetic property is high.
Description
The invention belongs to RE permanent magnetic alloy and manufacture method thereof, the prescription and the manufacture method of particularly a kind of Cd rare-earth binding permanent magnet (being called for short the CNM bonded magnet).
Rare earth permanent magnet closes and enters suitability for industrialized production at present, is widely used in electronic product, fields such as communication, control device.In recent years, new rare-earth permanent magnetic material-adhesive permanent magnetism body comes out.The magnetic property of adhesive permanent magnetism body is low than sintered permanent magnet or casting permanent magnet, but that the adhesive permanent magnetism body has magnetic is even, can be made into various complicated shapes, the characteristics that dimensional accuracy is high.At present the bonding agent that adopts of bonded magnet mainly is rubber, plastics, epoxy resin etc., and this bonded magnet exists that thermal endurance is relatively poor, magnetic property is lower.
In view of this, the object of the present invention is to provide a kind of Cd rare-earth binding permanent magnet that overcomes the prior art deficiency, the present invention with cadmium as bonding agent, the Cd rare-earth binding permanent magnet of producing according to the present invention has good heat resistance, the characteristics that magnetic property is high, and can make different types of isotropism or anisotropic magnet according to the ratio that magnet performance is controlled cadmium and magnetic.
Task of the present invention is achieved through the following technical solutions: the composition of Cd rare-earth binding permanent magnet is Nd
αB
βCd
γ(FeM)
100-alpha-beta-γ, wherein α, β, γ are the weight percent content of each element, wherein the Nd element in the cadmium rare earth bonded magnet can be in following each element at least a whole or partly replace, these elements are Pr, Sm, La, Ce, MM, Sc, Y or Gd, Dy, Ho, Er, Tb, Yb, Tm, the oxide of Lu or these nine kinds of elements, the maximum replacement amount of above-mentioned substituted element are that the percentage of Nd content is as shown in table 1, and wherein the B element can be at least a whole in following each element or partly replaces, these elements are: C, Si, P, N, F, O; Wherein the Cd element can be down at least a whole in the column element or partly replaces, and these elements are: Zn, Pb, Bi, Sn, Ga, In, Tl; Adding element M is at least a or its compound of following column element, and these elements are: Co, Ni, Cr, Mn, V, Ti, Zr, Hf, Nb, Mo, W, Tc, Ta, Re, Ru, Rb, Pd, Pt, Cu, Sb, Ge, the maximum addition of the above-mentioned interpolation element M of Al are that the percentage of Fe content is as shown in table 2.Key character of the present invention is to increase cadmium element, with cadmium element as bonding agent, Cd rare-earth binding permanent magnet Nd
αB
βCd
γ(FeM)
100-alpha-beta-γIn each element wt degree be: 20≤α≤40,0.2≤β≤2,1≤γ≤30, Fe accounts for surplus, M is for adding element.One of manufacture method of the present invention is: by proportioning each element of Nd-B-Fe-M is smelted into the alloy liquation under the argon shield in vaccum sensitive stove; then the alloy liquation is ejected on the water-cooled copper wheel of high rotation; make the liquation quench cooled; form the amorphous structure strip; to approach the end again and put into that to carry out temperature under the vacuum sintering furnace argon shield be 600 ℃～900 ℃; 0.1～12 hours crystallization is handled; strip after will handling again is ground into 50～200 μ m powder; with the Cd powder of 1～30Wt%, in being 300 ℃～800 ℃ scopes, temperature imposes 0.5～7T/cm
2The isotropism bonded magnet is made in pressure forming.
Realize that two of manufacture method of the present invention is: each element of Nd-B-Fe-M is smelted into the alloy liquation under the argon shield in vaccum sensitive stove by proportioning; be cast in the copper mold after the melting; again its ingot casting is ground into the powder of 50～200 μ m; powder is put into that to carry out temperature under the vacuum sintering furnace argon shield be that 600 ℃～900 ℃ crystallization was handled 0.1～12 hour, the Cd powder with 1～30Wt% imposes 0.5～7T/cm in temperature is 300 ℃～800 ℃ scopes then again
2The isotropism bonded magnet is made in pressure forming.
Realize that three of manufacture method of the present invention is: with magnetic energy product greater than 30MGO
eThe Nd-B-Fe-M sintered magnet be ground into 50～200 μ m powder, with the Cd powder of 1～30Wt%, in temperature is 300 ℃～800 ℃ scopes, impose 0.5～7T/cm
2The isotropism Cd rare-earth binding permanent magnet is made in pressure forming.
Realize that four of manufacture method of the present invention is: after getting the ingot casting powder and 1～30Wt/%Cd powder of the amorphous state powder of first kind of manufacture method and second kind of manufacture method, process heat by first kind of manufacture method is molded, make the isotropism Cd rare-earth binding permanent magnet
The present invention makes it to become Cd rare-earth binding permanent magnet owing to add cadmium element, thereby has improved the thermal endurance of magnet.The exist form of cadmium element in magnet is the crux factor of decision magnet performance, do not enter Nd with cadmium element
2Fe
14B principal phase, its some are distributed between the particle powder and play the bonding agent effect, another partly between particle powder to Nd
2Fe
14B principal phase crystal boundary infiltration and the form that is distributed between the crystal boundary exists can obtain higher magnetic property.The present invention adopts hot-forming processing method, promptly at certain temperature range, applies certain pressure, make it to produce plastic deformation, thereby processing technology is easier.Magnet is after hot-forming, and grain shape is a flat, laterally piles up along compacting, and the density of magnet improves, and its magnetic property significantly improves.
Chart 1 is that substituted element is the percentage table of Nd content among the present invention.
Chart 2 is to add unit's table among the present invention to be the percentage table of Fe content.
Chart 3 is the embodiment table.
Specify formation of the present invention and effect thereof by the following examples.
Embodiment 1: the Nd that will form by weight percentage
33B
1.1Fe
SurplusEach element is smelted into the alloy liquation under the argon shield in vaccum sensitive stove; again the alloy liquation is ejected on the water-cooled copper roller of 30m/s rotation; produce the strip of amorphous structure; then strip being carried out temperature is 600 ℃～900 ℃; 0.5～2h hour crystallization is handled; strip being ground into 50～200 μ m powder, again with 3～7Wt%Cd powder, is to impose 0.5～7T/cm under 300 ℃～800 ℃ conditions in temperature again
2Pressure forming, the gained magnet performance sees Table 3.
Embodiment 2: the Nd that each element is formed by weight percentage
30Dy
3B
1.1Fe
SurplusCarry out melting by embodiment 1 identical process, the Cd powder of crystallization processing, powder process, the same amount of adding, moulding, the gained magnet performance sees Table 3.
Embodiment 3: the Nd that each element is formed by weight percentage
37B
1.1Fe
SurplusCarry out melting by embodiment 1 identical process, crystallization is handled, powder process adds same amount and Cd powder, moulding, and the gained magnet performance sees Table 3.
Embodiment 4: the Nd that will form by weight percentage
34B
1.1Fe
SurplusIn vaccum sensitive stove, be smelted into alloy solution under the argon shield, be cast in after the melting in the copper mold, again its ingot casting is ground into 50～200 μ m powder; carrying out crystallization by embodiment 1 same process handles; add the Cd powder of same amount again, hot-forming, the gained magnet performance sees Table 3.
Embodiment 5: the Nd that each element is formed by weight percentage
33.5B
1.1Co
5.7Fe
SurplusPress embodiment 4 same process melting, powder process, crystallizations and handle, add the Cd powder of same amount, add the 2.0Wt%Ga powder again, moulding, the gained magnet performance sees Table 3.
Embodiment 6: with (BH)
MaxFor the NdFeB sintered magnet of 30MGOe is ground into 50～200 μ m powder, press the Cd powder that embodiment 4 identical technologies add same amount, hot-forming, the gained magnet performance sees Table 3.
Embodiment 7: the Nd that gets embodiment 1
33B
1.1Fe
SurplusThe Nd of the powder of 50Wt% and embodiment 4
34B
1.1Fe
SurplusAfter the powder of 47Wt% and the 3Wt%Cd powder, it is hot-forming to press the identical process of embodiment 1, and the gained magnet performance sees Table 3.
Table 1
| Element replacement amount % | Pr 100 | Sm 30 | La 50 | Ce 50 | MM 50 | Sc 10 | Y 20 | ||
| Element replacement amount % | Gd 20 | Dy 20 | Ho 20 | Eu 20 | Er 10 | Tb 10 | Yb 10 | Tm 10 | Lu 5 |
Table 2
| Element replacement amount % | Co 50 | Ni 25 | Cr 20 | Mn 30 | V 20 | Ti 15 | Zr 15 | Hf 15 | Nb 20 | Mo 20 |
| Element replacement amount % | W 15 | Tc 8 | Ta 8 | Re 8 | Ru 8 | Rb 8 | Rd 8 | Pt 8 | Cu 15 | Sb 8 |
| Element replacement amount % | Ge 25 | Al 20 |
Table 3
| Br(KG) | iHC(KOe) | (BH) max(MGO e) | |
| Embodiment 1 | 8.6～12.1 | 12.5～17.9 | 16.0～30.0 |
| Embodiment 2 | 8.7～12.3 | 13.4～18.7 | 16.0～31.0 |
| Embodiment 3 | 7.9～8.8 | 10.5～15.0 | 12.0～16.0 |
| Embodiment 4 | 7.1～9.0 | 9.0～14.0 | 10～20 |
| Embodiment 5 | 7.1～9.0 | 13.5～18.9 | 10～20 |
| Embodiment 6 | 7.5～8.5 | 9.0～11.7 | 12～16 |
| Embodiment 7 | 8.7～12.2 | 12.7～18.5 | 17～29 |
Claims (4)
1, the prescription of Cd rare-earth binding permanent magnet and manufacture method, its composition are Nd
αB
βCd
γ(FeM)
100-alpha-beta-γ, wherein α, β, γ are the weight percent content of each element, wherein the Nd element in the cadmium rare earth bonded magnet can be in following each element at least a whole or partly replace, these elements are Pr, Sm, La, Ce, MM, Sc, Y or Gd, Dy, Ho, Er, Tb, Yb, Tm, the oxide of Lu or these nine kinds of elements
Wherein the B element can be at least a whole in following each element or partly replaces, and these elements are: C, Si, P, N, F, O; Wherein the Cd element can be down at least a whole in the column element or partly replaces, and these elements are: Zn, Pb, Bi, Sn, Ga, In, Tl; Adding element M is at least a or its compound of following column element, and these elements are: Co, Ni, Cr, Mu, V, Ti, Zr, Hf, Nb, Mo, W, Tc, Ta, Re, Ru, Rb, Pd, Pt, Cu, Sb, Ge, Al
It is characterized in that increasing cadmium element, with cadmium element as bonding agent, Cd rare-earth binding permanent magnet Nd
αB
βCd
γ(FeM)
100-alpha-beta-γIn each element wt degree be: 20≤α≤40,0.2≤β≤2,1≤γ≤30, Fe accounts for surplus, M is for adding element.One of manufacture method of the present invention is: by proportioning each element of Nd-B-Fe-M is smelted into the alloy liquation under the argon shield in vaccum sensitive stove; then the alloy liquation is ejected on the water-cooled copper wheel of high rotation; make the liquation quench cooled; form the amorphous structure strip; again strip is put into that to carry out temperature under the vacuum sintering furnace argon shield be 600 ℃～900 ℃; 0.1～12 hours crystallization is handled; strip after will handling again is ground into 50～200 μ m powder; with the Cd powder of 1～3Wt%, in being 300 ℃～800 ℃ scopes, temperature imposes 0.5～7T/cm
2The isotropism bonded magnet is made in pressure forming.
2, the manufacture method of Cd rare-earth binding permanent magnet according to claim 1; it is characterized in that: each element of Nd-B-Fe-M is smelted into the alloy liquation under the argon shield in vaccum sensitive stove by proportioning; be cast in the copper mold after the melting; the powder that again its ingot casting is ground into 50～200 μ m is put into powder that to carry out temperature under the vacuum sintering furnace argon shield be that 600 ℃～900 ℃ crystallization was handled 0.1～12 hour again, and the Cd powder with 1～30Wt% imposes 0.5～7T/cm in temperature is 300 ℃～800 ℃ scopes then
2The isotropism bonded magnet is made in pressure forming.
3, the manufacture method of Cd rare-earth binding permanent magnet according to claim 1 is characterized in that: with magnetic energy product greater than 30MGO
eThe Nd-B-Fe-M sintered magnet be ground into 50～200 μ m powder, with the Cd powder of 1～30Wt%, in temperature is 300 ℃～800 ℃ scopes, impose 0.5～7T/cm
2The isotropism Cd rare-earth binding permanent magnet is made in pressure forming.
4, the manufacture method of Cd rare-earth binding permanent magnet according to claim 1, it is characterized in that: after getting the ingot casting powder and 1～30Wt/%Cd powder of the amorphous state powder of first kind of manufacture method and second kind of manufacture method, molded by the process heat of first kind of manufacture method.Make the isotropism Cd rare-earth binding permanent magnet.
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| CN 90105108 CN1056600A (en) | 1990-05-14 | 1990-05-14 | The prescription of Cd rare-earth binding permanent magnet and manufacture method |
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|---|---|---|---|
| CN 90105108 CN1056600A (en) | 1990-05-14 | 1990-05-14 | The prescription of Cd rare-earth binding permanent magnet and manufacture method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316674B (en) * | 2006-04-14 | 2010-11-17 | 信越化学工业株式会社 | Process for producing rare-earth permanent magnet material |
| WO2014019319A1 (en) * | 2012-07-30 | 2014-02-06 | 江苏巨鑫磁业有限公司 | Method for crystallizing rapidly-quenched neodymium powder |
| CN103871704A (en) * | 2014-03-04 | 2014-06-18 | 南京信息工程大学 | Praseodymium iron nitrogen phosphorus permanent magnet material and preparing method thereof |
| CN112658252A (en) * | 2020-11-17 | 2021-04-16 | 南昌大学 | Preparation method of AlFeCrNiMoNb hot-pressed plate applied to high-temperature chlorine corrosion environment |
-
1990
- 1990-05-14 CN CN 90105108 patent/CN1056600A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316674B (en) * | 2006-04-14 | 2010-11-17 | 信越化学工业株式会社 | Process for producing rare-earth permanent magnet material |
| WO2014019319A1 (en) * | 2012-07-30 | 2014-02-06 | 江苏巨鑫磁业有限公司 | Method for crystallizing rapidly-quenched neodymium powder |
| CN103871704A (en) * | 2014-03-04 | 2014-06-18 | 南京信息工程大学 | Praseodymium iron nitrogen phosphorus permanent magnet material and preparing method thereof |
| CN103871704B (en) * | 2014-03-04 | 2016-03-09 | 南京信息工程大学 | A kind of neodymium iron nitrogen phosphorus permanent magnetic material and preparation method |
| CN112658252A (en) * | 2020-11-17 | 2021-04-16 | 南昌大学 | Preparation method of AlFeCrNiMoNb hot-pressed plate applied to high-temperature chlorine corrosion environment |
| CN112658252B (en) * | 2020-11-17 | 2022-02-11 | 南昌大学 | AlFeNiMoNbCr alloy applied to high-temperature chlorine corrosion environment and preparation method thereof |
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