摘要:
The present invention concerns a ferromagnetic powder composition comprising soft magnetic iron-based core particles having an apparent density of 3.2-3.7 g/ml, and wherein the surface of the core particles is provided with a phosphorus-based inorganic insulating layer and at least one metal-organic layer, located outside the first phosphorus-based inorganic insulating layer. The invention further concerns a process for producing the composition and a method for the manufacturing of soft magnetic composite components prepared from the composition, as well as the obtained component.
摘要:
The present invention concerns a powder magnetic core for operating at high frequencies obtained by pressure forming an iron-based magnetic powder covered with an insulation film, and a specific resistance less than 1000, preferably less than 2000 and most preferably less than 3000 µm, a saturation magnetic flux density B above 1.5, preferably above 1.7 and most preferably above 1.9 (T). The invention also concerns the preparation of such cores as well as a powder which is suitable for the preparation.
摘要:
The present invention concerns a composite iron- based powder mix suitable for soft magnetic applications such as inductor cores. The present invention also concerns a method for producing a soft magnetic component and the component produced by the method.
摘要:
The present invention concerns a composite iron-based powder suitable for soft magnetic applications such as inductor cores. The present invention also concerns a method for producing a soft magnetic component and the component produced by the method.
摘要:
The present invention concerns a high purity, annealed iron powder suitable for the preparation of soft magnetic composites. The powder is distinguished in that the content of inevitable impurities is less than 0.25 %, the oxygen content is less than 0.05 % and the specific surface area as measured by the BET method is less than 60m 2 /kg.
摘要:
The present invention concerns a powder magnetic core for operating at high frequencies obtained by pressure forming an iron-based magnetic powder covered with an insulation film, and a specific resistance less than 1000, preferably less than 2000 and most preferably less than 3000 µm, a saturation magnetic flux density B above 1.5, preferably above 1.7 and most preferably above 1.9 (T). The invention also concerns the preparation of such cores as well as a powder which is suitable for the preparation.
摘要:
The present invention concerns a ferromagnetic powder composition comprising soft magnetic iron-based core particles, wherein the surface of the core particles is provided with a first inorganic insulating layer and at least one metal-organic layer, located outside the first layer, of a metal-organic compound having the following general formula: (R 1 [(R 1 )x(R 2 ) y (MO n-1 )] n R 1 , wherein M is a central atom selected from Si, Ti, Al, or Zr; O is oxygen; R 1 is a hydrolysable group; R 2 is an organic moiety and wherein at least one R 2 contains at least one amino group; wherein n is the number of repeatable units being an integer between 1 and 20; wherein the x is an integer between 0 and 1; wherein y is an integer between 1 and 2; wherein a metallic or semi- metallic particulate compound having a Mohs hardness of less than 3.5 being adhered to at least one metal-organic layer; and wherein the powder composition further comprises a particulate lubricant. The invention further concerns a process for producing the composition and a method for the manufacturing of soft magnetic composite components prepared from the composition, as well as the obtained component.
摘要翻译:本发明涉及包含软磁性铁基核心颗粒的铁磁性粉末组合物,其中芯体颗粒的表面设置有第一无机绝缘层和位于第一层外侧的至少一个金属 - 有机层,金属 (R 1 [(R 1)x(R 2)y(MO n-1)] n R 1,其中M是选自Si,Ti,Al或Zr的中心原子; O是氧; R 1 是可水解基团; R 2是有机部分,并且其中至少一个R 2含有至少一个氨基;其中n是1至20之间的整数的可重复单元的数目;其中x是0和1之间的整数; 其中y是1和2之间的整数;其中Mohs硬度小于3.5的金属或半金属颗粒化合物粘附到至少一个金属 - 有机层;并且其中所述粉末组合物还包含颗粒润滑剂。 本发明还涉及一种方法 r制备组合物以及由该组合物制备的软磁性复合材料组分的制造方法以及所获得的组分。
摘要:
The present invention concerns a process for the manufacture of soft magnetic composite components comprising the steps of : die compacting a powder composition comprising a mixture of soft magnetic, iron or iron-based powder, the core particles of which are surrounded by an electrically insulating, inorganic coating, and an organic lubricant in an amount of 0.05 to 1.5 % by weight of the composition, said organic lubricant being free from metal and having a temperature of vaporisation less than the decomposition temperature of the coating; ejecting the compacted body from the die; heating the compacted body in a non reducing atmosphere to a temperature above the vaporisation temperature of the lubricant and below the decomposition temperature of the inorganic coating for removing the lubricant from the compacted body, and subjecting the obtained body to heat treatment at a temperature between 3000C and 600°C in water vapour. The invention also concerns soft magnetic composite components having a transverse rupture strength of at least 100 MPa, a permeability of at least 700 and a core loss at 1 Tesla and 400 Hz of at most 70W/kg.
摘要:
The present invention concerns a composite iron- based powder mix suitable for soft magnetic applications such as inductor cores. The present invention also concerns a method for producing a soft magnetic component and the component produced by the method.
摘要:
The present invention relates to a ferromagnetic powder composition comprising soft magnetic iron-based core particles, wherein the surface of the core particles is provided with at least one phosphorus-based inorganic insulating layer and then at least partially covered with metal-organic compound(s), wherein the total amount of metal-organic compound(s) is between 0.005 and 0.05 % by weight of the powder composition, and wherein the powder composition further comprises a lubricant. The invention further relates to a process for producing the composition and a method for the manufacturing of soft magnetic composite components prepared from the composition, as well as the obtained component.