Abstract: A method is provided for the production of a wound nanocrystalline magnetic core in which a nanocrystalline metal strip made of (Fe1-aMa)100-x-y-z-?-?CuxSiyBzM??X? is pre-wound to form a first coil. An insulating foil is provided that is coated with an adhesive on at least one side. An adhesive is applied to the nanocrystalline metal strip to laminate the insulating foil onto the metal strip and thereby to stabilise the metal strip as it is wound off the coil. The laminated nanocrystalline metal strip and the insulating foil are bifilar wound to form a bifilar, layer-insulated coil.

Abstract: A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 105° C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.

Abstract: In an embodiment, a method of fabricating a working component for magnetic heat exchange comprises arranging at least two articles comprising a magnetocalorically active phase and an elongated form with a long axis having a length 1 and a shortest axis having a length s, wherein 1?1.5 s, such that the shortest axes of the at least two articles are substantially parallel to one another and securing the at least two articles in a position within the working component such that the shortest axes of the at least two articles are substantially parallel to one another within the working component.

Abstract: A conveyance system for tensioning to post-treat a rapidly-solidified metal strip, and a method for post-treating the metal strip with the conveyance system is provided. The conveyance system comprises a tension roller assembly and a tensioning assembly, between which the metal strip is conveyed to be continuously post-treated under a predetermined tensile stress. The tension roller assembly comprises a single drive roller and a freely-rotating pressing roller. The metal strip is conveyed over an angle of wrap ? on the drive roller, and, with respect to the drive roller, the pressing roller is arranged at a contact point of the metal strip that defines one end of an angle of wrap ?. The method can include bridging the distance between the tensioning assembly and the tension roller assembly amid the insertion of the metal strip into the tension roller assembly, after a post-treatment region in space and in time.

Abstract: An alloy is provided which consists of Fe100?a?b?c?d?x?y?zCuaNbbMc TdSixByZz and up to 1 at % impurities, M being one or more of the elements Mo, Ta and Zr, T being one or more of the elements V, Mn, Cr, Co and Ni, Z being one or more of the elements C, P and Ge, 0 at %?a<1.5 at %, 0 at %?b<2 at %, 0 at %?(b+c)<2 at %, 0 at %?d<5 at %, 10 at %<x<18 at %, 5 at %<y<11 at % and 0 at %?z<2 at %. The alloy is configured in tape form and has a nanocrystalline structure in which at least 50 vol % of the grains have an average size of less than 100 nm, a hysteresis loop with a central linear region, a remanence ratio Jr/Js of <0.1 and a coercive field strength Hc to anisotropic field strength Ha ratio of <10%.

Abstract: A magnet core for low-frequency applications and method for producing a magnet core for low-frequency applications is provided. The magnet core is made of a spiral-wound, soft-magnetic, nanocrystalline strip. The strip essentially has the alloy composition FeRestCoaCubNbcSidBeCf, wherein a, b, c, d, e and f are stated in atomic percent and 0?a?1; 0.7?b?1.4; 2.5?c?3.5; 14.5?d?16.5; 5.5?e?8 and 0?f?1, and cobalt may wholly or partially be replaced by nickel. The magnet core has a saturation magnetostriction ?s of ?s<2 ppm, a starting permeability ?1 of ?1>100 000 and a maximum permeability ?max of ?max>400 000. In addition, a sealing metal oxide coating is provided on the surfaces of the strip.

Abstract: An article for magnetic heat exchange includes a functionally-graded monolithic sintered working component including La1-aRa(Fe1-x-yTyMx)13HzCb with a NaZn13-type structure. M is one or more of the elements from the group consisting of Si and Al, T is one or more of the elements from the group consisting of Mn, Co, Ni, Ti, V and Cr and R is one or more of the elements from the group consisting of Ce, Nd, Y and Pr. A content of the one or more elements T and R, if present, a C content, if present, and a content of M varies in a working direction of the working component and provides a functionally-graded Curie temperature. The functionally-graded Curie temperature monotonically decreases or monotonically increases in the working direction of the working component.

Abstract: A method for producing a thermoelectric object for a thermoelectric conversion device is provided. A starting material which has elements in the ratio of a half-Heusler alloy is melted and then cooled to form at least one ingot. The ingot is homogenized at a temperature of 1000° C. to 1400° C. for a period of time t, wherein 0.5 h?t<12 h or 24 h<t<100 h. The homogenized ingot is crushed and ground into a powder. The powder is cold-pressed and sintered at a maximum pressure of 1 MPa for 0.5 to 24 h at a temperature of 1000° C. to 1500° C.

Abstract: A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 105° C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.

Abstract: A soft magnetic laminated core is provided which comprises first laminations and second laminations arranged in a stack having a stacking direction substantially perpendicular to a major surface of the first laminations and the second laminations. The first laminations comprise a first soft magnetic alloy and the second laminations comprise a second soft magnetic alloy different from the first soft magnetic alloy. The first laminations and the second laminations are distributed in the stacking direction throughout the stack. The first laminations and/or the second laminations comprise an insulating coating that is thermally stable up to at least 850° C.

Abstract: A magnet core has a linear B-H loop, a high modulability with alternating current and direct current, a relative permeability of more than 500 but less than 15,000, and a saturation magnetostriction ?s of less than 15 ppm, and is made of a ferromagnetic alloy, at least 50 percent of which consist of fine crystalline parts having an average particle size of 100 nm or less (nanocrystalline alloy) and which is characterized by formula FeaCobNicCudMeSifBgXh, wherein M represents at least one of the elements V, Nb, Ta, Ti, Mo, W, Zr, Cr, Mn, and Hf, a, b, c, d, e, f, g are indicated in atomic percent, X represents the elements P, Ge, C and commercially available impurities, and a, b, c, d, e, f, g, h satisfy the following conditions: 0<=b<=40; 2<c<20; 0.5<=d<=2; 1<=e<=6; 6.5<=f<=18; 5<=g<=14; h<5 atomic percent; 5<=b+c<=45, and a+b+c+d+e+f+g+h=100.

Abstract: A device for the production of a metallic strip using a rapid solidification technology is specified, which device includes a movable heat sink with an external surface onto which a melt is poured and on which the melt solidifies to produce the strip, and which device includes a rolling device which can be pressed against the external surface of the movable heat sink while the heat sink is in motion.

Abstract: A method producing soft magnetic strip material for roll tape-wound cores with the following steps: preparing a band-shaped material, applying a heat-treatment temperature to the band-shaped material, and applying a tensile force to the temperature-applied band-shaped material in one longitudinal direction of the band-shaped material in order to produce a tensile stress in the band-shaped material, to produce the soft magnetic strip material from the band-shaped material, the method, moreover, comprising determining at least one magnetic measurement value of the soft magnetic strip material that has been produced and controlling the tensile force for setting the tensile stress in a reaction to the determined magnetic measurement value. Furthermore, a device for carrying out the method and a roll tape-wound core produced by means of the method are made available.

Abstract: A magnetic core and method for the manufacture of the magnetic core is presented. The method comprises winding an amorphous tape of a soft magnetic nanocrystallizable alloy possessing a first coefficient of thermal expansion onto a carrier of a material possessing a second coefficient of thermal expansion, wherein the second coefficient is larger than the first coefficient; a first thermal treatment of the wound tape together with the carrier, wherein the first thermal treatment creates a tension in the tape although the alloy remains in an x-ray amorphous state, removing the carrier from the wound tape after cooling of the wound tape together with the carrier; and a second thermal treatment of the wound tape without the carrier, wherein the second thermal treatment provides a nanocrystalline alloy structure, at least 50% of the alloy structure being fine crystalline particles having an average particle size of 100 nanometers or less.

Abstract: Conveyance system for tensioning in order to post-treat a rapidly-solidified metal strip, and post-treatment method is provided. The invention relates to a conveyance system (1 to 5) for tensioning in order to post-treat a rapidly-solidified metal strip (6), and a post-treatment method. For this purpose, the conveyance system comprises a tension roller assembly (6 to 11) and a tensioning assembly (12), between which the metal strip (6) is conveyed in order to be continuously post-treated under a predetermined tensile stress. The tension roller assembly (6 to 11) comprises a single drive roller (13) and a freely-rotating pressing roller (14). The metal strip (6) is conveyed over an angle of wrap ? on the drive roller, and, with respect to the drive roller (13), the pressing roller (14) is arranged at a contact point (16) of the metal strip (6) that defines one end of an angle of wrap ?.

Abstract: In an embodiment, a method of fabricating a working component for magnetic heat exchange comprises arranging at least two articles comprising a magnetocalorically active phase and an elongated form with a long axis having a length l and a shortest axis having a length s, wherein l?1.5 s, such that the shortest axes of the at least two articles are substantially parallel to one another and securing the at least two articles in a position within the working component such that the shortest axes of the at least two articles are substantially parallel to one another within the working component.

Abstract: An alloy of Fe100-a-b-c-d-x-y-zCuaNbbMcTdSixByZz and up to 1 atomic % impurities; M is one or more of Mo or Ta, T is one or more of V, Cr, Co or Ni and Z is one or more of C, P or Ge, wherein 0.0 atomic %?a<1.5 atomic %, 0.0 atomic %?b<3.0 atomic %, 0.2 atomic %?c?4.0 atomic %, 0.0 atomic %?d<5.0 atomic %, 12.0 atomic %<x<18.0 atomic %, 5.0 atomic %<y<12.0 atomic % and 0.0 atomic %?z<2.0 atomic %, and wherein 2.0 atomic %?(b+c)?4.0 atomic %, produced in the form of a strip and having a nanocrystalline structure in which at least 50% by volume of the grains have an average size of less than 100 nm, a remanence ratio Jr/Js<0.02, Jr being the remanent polarization and Js being the saturation polarization, and a coercitive field strength Hc which is less than 1% of the anisotropic field strength Ha and/or less than 10 A/m.

Abstract: A thermoelectric article and process for producing a thermoelectric article for a thermoelectric conversion device is provided. The thermoelectric article has an overall composition consisting essentially of 6 atom %?Ti?27 atom %, 6 atom %?Zr?27 atom %, 0 atom %?Hf?1.7 atom %, where 28 atom %?(Ti+Zr+Hf)?38 atom %; 28 atom %?Sn?38 atom %, 0 atom %?Sb?3 atom %, where 28 atom %?(Sn+Sb)?38 atom %; 0 atom %?A?7 atom %, 0 atom %?B?7 atom %, where A is Sc, Y and/or La, B is V, Nb and/or Ta and 0.15 atom %?A+B?7 atom %; the rest being Ni and up to 5 atom % impurities.

Abstract: A soft magnetic alloy is provided that consists essentially of 47 weight percent?Co?50 weight percent, 1 weight percent?V?3 weight percent, 0 weight percent?Ni?0.2 weight percent, 0.08 weight percent?Nb?0.12 weight percent, 0 weight percent?C?0.005 weight percent, 0 weight percent?Mn?0.1 weight percent, 0 weight percent?Si?0.1 weight percent, remainder Fe.

Abstract: A method for manufacturing a shielding film is provided. The method includes providing a band of an amorphous soft magnetic alloy; thermally treating the band at a temperature of 500° C. to 600° C. for 1 minute to 1 hour under an N2- or H2-containing atmosphere and under the Earth's magnetic field, thereby creating a nanocrystalline soft magnetic band with a round hysteresis loop; applying an adhesive layer to at least one side of the band; and wherein the band is first applied to a substrate, then thermally treated, after which an adhesive film is applied to the band and, finally, the band is structured by breaking.