30results about How to "The ratio of ingredients is flexible" patented technology

The invention discloses a method for preparing a neodymium-iron-boron magnetic material, belonging to the technical field of materials. The preparation method disclosed by the invention comprises the following steps of: adding aluminium powder after mixing iron trioxide, neodymium oxide and Al3O4, burning by utilizing a magnesium rod to generate a reactant, then, initially separating the generated reactant to remove light substances, such as generated magnesium oxide and aluminium oxide, further oxidizing, adding sodium borohydride solution to reduce at high temperature, and roasting to obtain the neodymium-iron-boron magnetic material. Examples prove that the method disclosed by the invention is relatively simple, and simple and convenient to operate; the quality and the production efficiency of the neodymium-iron-boron magnetic material are increased; the production cost is reduced; furthermore, the prepared neodymium-iron-boron magnetic material is difficult to oxidize and good in corrosion resistance; and thus, the neodymium-iron-boron magnetic material can be suitable for large-scale popularization and application.

The invention provides a waste-material-recycled multi-phase permanent magnet material and a preparation method therefor. The permanent magnet material has relatively high maximum magnetic energy product performance and coercivity. The preparation method is simple in process, low in production cost, and suitable for realizing industrial production. The permanent magnet material comprises the following components based on mass percentage: 25-30% of Nd, 2.5-3.0% of Y, 2.5-3.0% of Ce, 0.25-0.30% of Tb, 0.25-0.30% of Eu, 0.25-0.30% of La, 0.25-0.30% of Pr, 2-4% of B, 1.0-1.2% of N, 0.25-0.30% of V, 2.1-2.5% of W and the balance of Fe; and the 1.0-1.2% of N based on mass percentage is included in the material.

The invention discloses neodymium iron boron magnetic materials and a preparation method of the neodymium iron boron magnetic materials. The neodymium iron boron magnetic materials comprise, by weight, 27-34.5 % of neodymium (Nd), 4.5-5.75 % of praseodymium (Pr), 0.45-0.575 of gadolinium (Gd), 2-4% of boron (B), 0.08-0.16 % of niobium (Nb), 0.01-0.02 % of hafnium (Hf), 0.01-0.02 % of wolfram (W) and 0.045-0.0575 % of scandium (Sc), and the rest is ferrum (Fe). The neodymium iron boron magnetic materials have uniform textures and strong structures, and can not only improve tenacity performance of the materials but also improve magnetic performance to some extent. The preparation method of the neodymium iron boron magnetic materials fully utilizes praseodymium-neodymium waste materials to directly produce raw materials for alloy, is flexible in composition proportion, qualified in quality control, capable of reducing cost and simple in technology, and fully utilizes waste powder materials with high oxygen content.

The invention provides a low-cost preparation method of a titanium silicon alloy target material. The low-cost preparation method of the titanium silicon alloy target material comprises the following steps of A, mixing: uniformly mixing sponge titanium and crystal silicon according to the proportion; B, pressing an electrode: pressing the mixed raw material into an electrode rod, and heating the electrode rod; C, carrying out self-consumption smelting for the first time: under a protective atmosphere, welding the heated electrode, then carrying out vacuum self-consumption smelting for the first time, and obtaining a primary ingot of titanium silicon alloy; D, welding: after flattening two ends of the primary ingot of the titanium silicon alloy, combining and welding the primary ingot of the titanium silicon alloy by utilizing a vacuum electron beam welding technology, and obtaining an electrode material; E, carrying out self-consumption smelting for the second time: carrying out vacuum self-consumption smelting on the electrode material for the second time, and obtaining a secondary ingot of the titanium silicon alloy; and F, processing the secondary ingot of the titanium silicon alloy, and obtaining the final titanium silicon target material. The titanium silicon target material prepared by the method provided by the invention has a compact structure, and is uniform and fine, high in raw material production rate, low in cost, and suitable for engineering mass production.

The invention discloses a corrosion-resistant neodymium-iron-boron permanent magnet material and a preparation method thereof. The corrosion-resistant neodymium-iron-boron permanent magnet material comprises the following components in percentage by weight: 20-26 percent of Nd, 5-6.5 percent of Pr, 1-4 percent of B, 0.05-0.065 percent of Ir, 0.05-0.065 percent of Os, 0.5-0.65 percent of Sc, 0.5-0.65 percent of Cu and the balance of Fe. The corrosion-resistant neodymium-iron-boron permanent magnet material disclosed by the invention is provided with uniform tissue and a robust structure, so that the corrosion resistance of the material can be enhanced, and the magnetic performance is improved. According to the preparation method of the corrosion-resistant neodymium-iron-boron permanent magnet material, raw materials of an alloy are directly produced by fully utilizing praseodymium and neodymium waste, a component mixture ratio is flexible, and the quality is controlled appropriately; and moreover, the cost can be reduced, a process is simple, and powder waste with high oxygen content is fully utilized.

The invention discloses a functional material and a preparation method. The functional material is blended by components in percentage by mass as follows: 34%-36% of Nd, 0.01%-0.15% of Nb, 0.01%-0.15% of Gd, 0.01%-0.15% of Ti, 0.01%-0.15% of Ni, 1%-4% of Bi, 1%-4% of Dy, 0.01%-0.15% of Cr, 4%-7% of B and the balance of Fe. The functional material has uniform tissue and strong structure, the corrosion resistance of the material can be improved, and the magnetism is improved. The permanent magnet material has good stability and practicability and can be widely applied to various fields such as electronic devices, aerospace engineering, computer equipment, magnetic separators, communication equipment, medical equipment, electric bicycles, electronic toys and the like.

The invention discloses a permanent magnet material with high pressure resisting intensity and a preparation method of the permanent magnet material with high pressure resisting intensity. The permanent magnet material with high pressure resisting intensity comprises, by weight, 14.4-24% of neodymium, 3.6-6% of praseodymium, 1-5% of boron, 0.036-0.06% of wolfram, 1-3% of niobium, 0.012-0.02% of rhenium, 0.036-0.06% of scandium, and the rest is ferrum, wherein the weight ratio among neodymium, praseodymium and wolfram is 4:1:0.01, and the weight ratio between wolfram and rhenium is 3:1. Due to the fact that permanent magnet material with high pressure resisting intensity utilizes neodymium and praseodymium waste to directly generate raw material of an alloy, composition proportion is flexible, quality is well controlled, and cost can be reduced, process is simple, powder waste high in oxygen content is fully utilized, environment is protected and effectively improved, and high social value is possessed.

The invention discloses a multi-rare-earth-phase material and a preparation method thereof. The material comprises the following components in percentage by mass: 15-20% of Nd, 3-4% of Ir, 4.5-6% of Ga, 6.0-8.0% of Cr, 3-4% of Pr, 0.15-0.20% of Gd, 0.3-0.4% of Sr, 2-5% of B, 0.45-0.60% of Co, 0.01-0.04% of Mn, 0.01-0.04% of Mo, and the balance of Fe. The material disclosed by the invention has the advantages of uniform texture and robust structure; in addition, the material is improved in corrosion resistance and magnetic property. The material is prepared by using the preparation method disclosed by the invention. The simple and effective anti-oxidation method can ensure a small difference in oxygen content between the surface and inside of a magnetic body and therefore makes the preparation of a high-performance rare earth material possible. The permanent magnet material disclosed by the invention has excellent stability and practicability, can be widely applied to various fields such as electronic devices, aerospace technology, computer equipment, magnetic separators, communication equipment, medical equipment, electric bicycles, electronic toys.

The invention discloses a magnetic material and a preparation method thereof. The magnetic material has a uniform tissue and a strong structure; the anti-corrosion capability of the material can be improved; and the magnetic property is also improved. The magnetic material has good stability and practicability, and can be widely applied to various fields of an electronic device, an aerospace technology, computer equipment, a magnetic separator, communication equipment, medical equipment, an electric bicycle, an electronic toy and the like. According to the preparation method of a permanent magnet material disclosed by the invention, wastes are fully utilized as an alloy raw material directly; the composition proportion is flexible; the quality control is in place; the cost can be reduced; the process is simple; a power waste with high oxygen content is fully utilized; the method is environment-friendly and has high social value; and the environment is effectively improved.

The invention provides a magnetic material containing a nitrogen-boron composite phase. The magnetic material is high in residual magnetic flux density; the preparation method is simple in process, low in production cost and suitable for industrial production. The permanent magnet material comprises the following components in percentage by mass: 24-30% of Nd, 2.4-3.0% of Y, 3.6-4.5% of Eu, 1.2-1.5% of Ce, 1.2-1.5% of Tb, 2-4% of B, 0.2-0.6% of P, 0.12-0.3% of Ba, 0.45-0.60% of V and the balance of Fe, wherein the permanent magnet material also comprises 0.55-0.86% of N in percentage by mass.

The invention discloses high tenacity magnetic materials and a preparation method of the high tenacity magnetic materials. The component percentages of the high tenacity magnetic materials comprise, by weight, 28-38% of neodymium (Nd), 2.8-3.8% of praseodymium (Pr), 1-4% of boron (B), 0.09-0.198% of tantalum (Ta), 0.08-0.176 % of hafnium (Hf), 0.02-0.044 % of wolfram (W) and 0.028-0.038% of scandium (Sc), and the rest is ferrum (Fe). The high tenacity magnetic materials have uniform textures and strong structures, and can not only improve tenacity performance of the materials but also improve magnetic performance. The preparation method fully utilizes praseodymium-neodymium waste materials to directly produce raw materials for alloy, is flexible in composition proportion, qualified in quality control, capable of reducing cost and simple in technology, and fully utilizes waste powder materials with high oxygen content.

The invention provides a rare earth permanent magnet material utilizing recycled waste materials. An alloy material is high in coercivity. The preparation method is simple in process, low in production cost and suitable for industrial production. The permanent magnet material comprises the following components in percentage by mass: 18-22% of Nd, 7.2-8.8% of Y, 3.6-4.4% of Eu, 3.6-4.4% of Dy, 2-6% of B, 0.1-0.5% of P, 0.15-0.20% of Ag, 0.45-0.60% of Ni, 0.01-0.04% of Si, 0.45-0.60% of Ti and the balance of Fe; the mass ratio of Nd to Y to Eu to Dy in the permanent magnet material is 10:4:2:2; and the permanent magnet material also comprises 0.045-0.060% of N in percentage by mass.

The invention provides a permanent magnet material containing multiple rare earth phases and a preparation method. The permanent magnet material is high in magnetic energy product; the preparation method is simple in process, low in production cost and suitable for industrial production. The permanent magnet material containing the multiple rare earth phases comprises the following components in percentage by mass: 15-20% of Nd, 3-4% of Y, 4.5-6% of La, 6.0-8.0% of Ce, 3-4% of Pr, 0.15-0.20% of Pd, 0.3-0.4% of Sm, 2-5% of B, 0.45-0.60% of Co, 0.01-0.04% of Mn, 0.01-0.04% of Mo and the balance of Fe; the mass ratio of Pd to Co in the permanent magnet material is 1:3; the mass ratio of Nd to Y to La to Ce to Pr to Pd to Sm is 10:2:3:4:2:0.1:0.2; and the permanent magnet material also comprises 0.15-0.55% of N in percentage by mass.