摘要:
A hexagonal ferrite magnetic powder having an average tabular diameter of from 15 to 28 nm, a coercive force (Hc) of from 2,000 to 5,000 Oe (from 160 to 400 kA/m), a switching field distribution (SFD) of from 0.3 to 0.7 and a D70/D50 of from 1.05 to 1.25. This magnetic powder can be obtained by melting and quenching starting materials to obtain an amorphous product, and thermally treating the product, which comprises increasing a temperature at a rate of 300 to 500° C./hr in a temperature range of 550 to 600° C. in the thermal treatment before the temperature reaches the thermally treating temperature.
摘要翻译:平均片状直径为15〜28nm,矫顽力(Hc)为2,000〜5,000Oe(160〜400kA / m)的六角铁氧体磁性粉末,切换场分布(SFD)为0.3〜 0.7,D 70 / D 50为1.05〜1.25。 这种磁性粉末可以通过熔融和淬火原料获得以获得无定形产物,并对产物进行热处理,其包括在550至600℃的温度范围内以300至500℃/小时的速率升高温度 C.在温度达到热处理温度之前进行热处理。
摘要:
A hexagonal ferrite magnetic powder having an average tabular diameter of from 15 to 30 nm, a coercive force (Hc) of from 2,000 to 5,000 Oe (from 160 to 400 kA/m) and a saturated magnetization (σs) of equal to or more than [the average tabular diameter (nm)×0.37+45] A·m2/kg. This magnetic powder is obtained by melting a starting material containing a material which has a composition within the hatched region (1) in the triangular phase diagram shown in FIG. 1 and quenching the molten product to obtain an amorphous product, subjecting the amorphous product to a thermal treatment, acid treatment, and washing. Also, a magnetic recording medium is obtained by adding this magnetic powder to the magnetic layer and coating it on the support.
摘要:
A hexagonal ferrite magnetic powder having an average tabular diameter of from 15 to 30 nm, an average tabular ratio of from 3.0 to 4.9, an Hc of from 2,020 to 5,000 Oe (from 161.6 to 400 kA/m) and an SFD of from 0.3 to 0.7, and comprising at least one tetravalent element in a proportion of from 0.004 to 0.045 atoms based on one atom of Fe.
摘要:
An aspect of the present invention relates to a method of manufacturing a hexagonal ferrite magnetic particle comprising melting an Al-containing starting material mixture to prepare a melt and quenching the melt to obtain an amorphous material; subjecting the amorphous material to heat treatment to cause a hexagonal ferrite magnetic particle to precipitate in a product obtained by the heat treatment; collecting a hexagonal ferrite magnetic particle by subjecting the product to treatment with an acid and washing, wherein the hexagonal ferrite magnetic particle collected has a particle size ranging from 15 to 30 nm, comprises 0.6 to 8.0 weight percent of Al, based on Al2O3 conversion, relative to a total weight of the particle, and Al adheres to a surface of the hexagonal ferrite magnetic particle.
摘要翻译:本发明的一个方面涉及一种制造六方晶系铁氧体磁性颗粒的方法,包括熔化含Al原料混合物以制备熔体并淬火熔体以获得无定形材料; 使无定形材料进行热处理,使六方晶系铁氧体磁性颗粒在通过热处理获得的产品中沉淀; 收集六方晶系铁氧体磁性颗粒,通过酸处理和洗涤进行处理,其中所收集的六方晶系铁氧体磁性颗粒具有15至30nm的粒度,包含基于Al 2 O 3转化率的0.6至8.0重量%的Al, 相对于颗粒的总重量,Al附着到六方晶系铁氧体磁性颗粒的表面。
摘要:
A hexagonal ferrite magnetic powder having an average tabular diameter of from 15 to 28 nm, a coercive force (Hc) of from 2,000 to 5,000 Oe (from 160 to 400 kA/m), a switching field distribution (SFD) of from 0.3 to 0.7 and a D70/D50 of from 1.05 to 1.25. This magnetic powder can be obtained by melting and quenching starting materials to obtain an amorphous product, and thermally treating the product, which comprises increasing a temperature at a rate of 300 to 500° C./hr in a temperature range of 550 to 600° C. in the thermal treatment before the temperature reaches the thermally treating temperature.
摘要:
A hexagonal ferrite magnetic powder having an average tabular diameter of from 15 to 30 nm, a coercive force (Hc) of from 2,000 to 5,000 Oe (from 160 to 400 kA/m) and a saturated magnetization (σs) of equal to or more than [the average tabular diameter (nm)×0.37+45] A·m2/kg. This magnetic powder is obtained by melting a starting material containing a material which has a composition within the hatched region (1) in the triangular phase diagram shown in FIG. 1 and quenching the molten product to obtain an amorphous product, subjecting the amorphous product to a thermal treatment, acid treatment, and washing. Also, a magnetic recording medium is obtained by adding this magnetic powder to the magnetic layer and coating it on the support.
摘要:
A hexagonal ferrite magnetic powder having an average tabular diameter of from 15 to 30 nm, a coercive force (Hc) of from 2,000 to 5,000 Oe (from 160 to 400 kA/m) and a saturated magnetization (σs) of equal to or more than the average tabular diameter (nm)×0.37+45 A·m2/kg. This magnetic powder is obtained by melting a starting material containing a material which has a composition within the hatched region (1) in the triangular phase diagram shown in FIG. 1 and quenching the molten product to obtain an amorphous product, subjecting the amorphous product to a thermal treatment, acid treatment, and washing. Also, a magnetic recording medium is obtained by adding this magnetic powder to the magnetic layer and coating it on the support.
摘要:
A medium conveying device includes an alignment member, a skew conveying member, and a removal member. The alignment member faces one end of a medium and aligns the medium while contacting with the medium when the medium is conveyed in a first direction. The skew conveying member conveys the medium in a second direction crossing to the first direction so that the one end comes in contact with the alignment member and that includes a drive member and a driven member opposed to the drive member and driven by the drive member. The removal member has a tip end coming in contact with a face of the drive member to remove a deposit on the face. The removal member is placed along a rotation direction of the drive member so that the tip end faces downstream of the rotational direction.
摘要:
An organic solar cell module having a transparent substrate; a transparent electrode layer formed on the transparent substrate; a photoelectric conversion layer that is formed in a pattern on the transparent electrode layer and includes plural kinds of photoelectric conversion sections having different absorption wavelength regions; a plurality of back surface electrode layers respectively formed on the photoelectric conversion sections; an insulating layer that is formed so as to cover the plurality of back surface electrode layers and has an opening for each of the photoelectric conversion sections; and a plurality of charge-collecting wirings that are formed on the insulating layer and are disposed so as to be connected to the back surface electrode layers located at the openings of the insulting layer for the respective kinds of the photoelectric conversion sections.
摘要:
A fixing structure of an indoor lamp includes a lamp unit and an interior wall member. The lamp unit includes a design part arranged at an indoor side of the interior wall member and a functional part arranged at an outdoor side of the interior wall member and assembled with the design part through a lamp attachment hole in a state that the functional part holds the interior wall member therebetween. The functional part has a connector portion for connecting a connector. The design part has a regulating portion which forms a connector insertion portion together with the connector portion when the design part is assembled with the functional part. The regulating portion engages with the connector inserted into the connector insertion portion to regulate displacement of the design part in a disengagement direction from the functional part.