Abstract: A work chamfering apparatus includes a work holding portion. The work holding portion includes a work table and a clamper. The work table has an upper surface having two end portions each formed with holding grains projecting out of the upper surface. The two end portions of the upper surface of the work table have a static friction coefficient greater than 0.1, which is greater than that of a center portion. When chamfering, first, the work is held by the work table and a generally U-shaped member of the clamper. At this time, the two end portions of the upper surface of the work table contact a lower surface of the work, whereas lower surfaces of respective end portions of the U-shaped member contact an upper surface of the work. In this state, a rotating center of the work is between the lower surfaces, and the lower surfaces are apart generally equally from the rotating center.

Abstract: A method for cutting a rare earth alloy using a wire with abrasive grains fixed to a core wire, including the step of cutting the rare earth alloy with the wire traveling in a state that a portion of the rare earth alloy to be cut with the wire is immersed in a coolant containing water as the main component, the coolant having a surface tension at 25° C. in a range of 25 mN/m to 60 mN/m.

Abstract: A magnetic field generator comprises a pair of pole-piece units. The pair of pole-piece units respectively include plate yokes. Each of the plate yokes includes a surface facing the other's and provided with a permanent magnet group and a pole piece. The pole piece includes an annular projection having a plurality of annular-projection pieces and a permanent magnet for reduction of magnetic flux leakage installed on an outside surface of each annular-projection piece. The permanent magnet for reduction of magnetic flux leakage may be disposed with a magnetizing direction thereof being slanted with respect to a main surface of the permanent magnet group.

Abstract: A method of recording identifiers, each including a group of character strings A and B including z1, and z2 characters, respectively, on plate members involves the use of a photomask of a first type and at least one photomask of a second type. The photomask of the first type has an opaque pattern defining the character string A. The photomask of the second type has an opaque pattern defining at least one of the characters of the character string B. The method further includes the steps of forming a photoresist layer on one of the plate members, selectively exposing the photoresist layer to a radiation through the photomask of the first type to form a latent image of the character string A in the photoresist layer, and forming a latent image of the character of the character string B in the photoresist layer through the photomask of the second type.

Abstract: An R-T-B based permanent magnet material alloy according to the present invention is an alloy in the shape of a thin plate including R2T14B columnar crystals and R-rich phases (where R is at least one of the rare-earth elements including Y, T is Fe with or without at least one nonferrous transition metal element, and B is boron with or without carbon). In a structure of the alloy as viewed on an arbitrary cross section including a normal to the thin plate, the ratio of the combined area of some of the R-rich phases, which have aspect ratios of 10 or more and the major axes of which define angles of 90±30 degrees with respect to the surface of the thin plate, to the overall area of the R-rich phases included in the alloy is at least 30%.

Abstract: A work cutting apparatus comprises a bed. The bed has an upper surface provided with a column including a rail slidably mounted with a slider. The slider has a front surface mounted with a supporting portion supporting two end portions of a rotating shaft. The rotating shaft is mounted with a plurality of cutting blade blocks. Each of the cutting blade blocks includes a plurality of cutting blades and a thicker cutting blade at each end of the cutting blade block. A table provided with a recess having a V-shaped section is disposed on the bed right beneath the cutting blade blocks. A plurality of works are disposed in the recess, each fixed by a fixing member. The cutting blades lowered while rotating, thereby cutting the works. During this operation, coolant is discharged from a plurality of supplying ports of a coolant supplying portion as well as from a supplying port of a coolant supplying path.

Abstract: A method of making a material alloy for an iron-based rare earth magnet includes the step of forming a melt of an alloy with a composition of (Fe1-mTm)100-x-y-z-n(B1-pCp)xRyTi2Mn. T is Co and/or Ni; R is at least one element selected from Y (yttrium) and the rare earth elements; and M is at least one element selected from Al, Si, V, Cr, Mn, Ni, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb, wherein the following inequalities are satisfied: 10<x?25 at %, *6?y<10 at %, 0.5?z?12 at %, 0?m?0.5, 0?n?10 at % and 0?p?0.25. Next, the melt is fed onto a shoot with a guide surface tilted at about 1 degree to about 80 degrees with respect to a horizontal plane, thereby moving the melt onto a melt/roller contact region. The melt is then rapidly cooled using a chill roller to make a rapidly solidified alloy including an R2Fe14B phase.

Abstract: An electronic component package includes a case having a cavity portion including an electronic component therein, and a lid member which is fusion-welded to the case via a fusion-welding layer to hermetically seal the cavity portion. The case has a first metal layer laminated on the case so as to be exposed on the open side at the cavity portion. The lid member has a core portion, and a second metal layer laminated on a side of the core portion facing the case. The fusion-welding layer has a soldering material layer formed of a soldering material, and first and second intermetallic compound layers disposed on opposite sides of the soldering material layer as a result of diffusion of a major component of the soldering material into the first metal layer and the second metal layer.

Abstract: The chemical conversion film containing, at least as the constituent components thereof, (a) at least one of the metals selected from molybdenum, zirconium, vanadium, and tungsten; (b) a rare earth metal constituting the magnet; and (c) oxygen, which is formed on the surface of a rare earth metal-based permanent magnet according to the present invention, contains a composite metal oxide provided on the surface of the R-rich phase having a lower oxidation-reduction potential through a preferential reaction of the metallic ions that are present in the form of complex ions or oxide ions, such as of molybdenum, contained in the treatment solution, with the rare earth metals that elute from the magnet. Thus formed composite metal oxide reduces the difference in corrosion potential as to realize a uniform surface potential, and effectively suppresses the corrosion based on potential difference.

Abstract: The chemical conversion film containing, at least as the constituent components thereof, (a) at least one of the metals selected from molybdenum, zirconium, vanadium, and tungsten; (b) a rare earth metal constituting the magnet; and (c) oxygen, which is formed on the surface of a rare earth metal-based permanent magnet according to the present invention, contains a composite metal oxide provided on the surface of the R-rich phase having a lower oxidation-reduction potential through a preferential reaction of the metallic ions that are present in the form of complex ions or oxide ions, such as of molybdenum, contained in the treatment solution, with the rare earth metals that elute from the magnet. Thus formed composite metal oxide reduces the difference in corrosion potential as to realize a uniform surface potential, and effectively suppresses the corrosion based on potential difference.

Abstract: With the deposited-film forming apparatus according to the first embodiment of the present invention, the distance between the tubular barrel and the evaporating section can be varied, unlike the prior art deposited-film forming apparatus and hence, the efficient formation of the deposited film on the surface of each of the work pieces accommodated in the tubular barrel and the inhibition of the softening of the formed film can be achieved simultaneously. Therefore, it is possible to inhibit the damaging of the deposited film formed on the surface of each of the work pieces and the production of projections on the deposited film, and to form a deposited film at a high quality in respect of a corrosion resistance and the like and at low cost.

Abstract: A resin molded product and a fine metal powder producing material are placed into a treating vessel. The fine metal powder producing material is brought into flowing contact with the surface of the resin molded product, thereby producing a fine metal powder, and forming a metal layer of the fine metal powder on the surface of the resin molded product. In this process, the metal layer of the fine metal powder can be formed firmly and at high density on the surface of the resin molded product. The metal layer exhibits a function as an electrically conductive layer. Therefore, a metal film having an excellent thickness accuracy, an excellent surface smoothness and a high peel strength can be formed in a simple manner on the metal layer by carrying out an electroplating treatment. In addition, it is possible for the metal layer itself to exhibit functions or properties such as an ornamentality.

Abstract: A method of inhibiting production of projections in a metal deposited-film according to the present invention is characterized by using a vapor deposition apparatus comprising, in a vacuum-treating chamber, an evaporating section for a depositing material, and an accommodating member and/or a holding member for accommodation and/or hold of work pieces, respectively, and, in depositing a metal depositing material on each of the surface of the work pieces with the accommodating member and/or the holding member being made rotated about the horizontal rotational axis thereof, carrying out vapor deposition with a Vickers hardness of a film formed on each of the surface of the work pieces maintained at 25 or more. According to the present invention, production of projections in a metal deposited-film can be effectively inhibited when forming the metal deposited-film of aluminum, zinc or the like on the surface of a work piece such as a rare earth metal-based permanent magnet.

Abstract: A hermetic sealing cap member capable of suppressing deterioration of characteristics of an electronic component resulting from a sealant such as solder coming into contact with the electronic component in a package is obtained. This hermetic sealing cap, which is a hermetic sealing cap employed for an electronic component storing package for storing an electronic component (5, 34), comprises a hermetic sealing cap member (11, 41), a first plating layer (12, 42) formed at least on a region other than a region of the hermetic sealing cap member formed with a sealant (3, 32) and a second plating layer (13, 43), formed on the region of the hermetic sealing cap member on which the sealant is arranged, containing a material superior in wettability with the sealant to the first plating layer.

Abstract: An electronic component package includes a case having a cavity portion including an electronic component therein, and a lid member which is fusion-welded to the case via a fusion-welding layer to hermetically seal the cavity portion. The case has a first metal layer laminated on the case so as to be exposed on the open side at the cavity portion. The lid member has a core portion, and a second metal layer laminated on a side of the core portion facing the case. The fusion-welding layer has a soldering material layer formed of a soldering material, and first and second intermetallic compound layers disposed on opposite sides of the soldering material layer as a result of diffusion of a major component of the soldering material into the first metal layer and the second metal layer.

Abstract: A method for cutting a rare earth alloy using a wire with abrasive grains fixed to a core wire, including the step of cutting the rare earth alloy with the wire traveling in a state that a portion of the rare earth alloy to be cut with the wire is immersed in a coolant containing water as the main component, the coolant having a surface tension at 25° C. in a range of 25 mN/m to 60 mN/m.

Abstract: A cleaning apparatus of an electronic component of the present invention comprises: means for supplying cleaning water to an object to be cleaned such as alumina titanium carbide wafer, a sponge member for contacting with the object to be cleaned to clean a surface thereof, means for moving the object to be cleaned and the sponge member relative to each other, and means for adjusting the resistivity value of the cleaning water to 10M? or less. Using this apparatus, the object to be cleaned is cleaned using the sponge member while supplying, to the object to be cleaned, cleaning water having the resistivity value of 10M? or less. In this case, the cleaning degree is enhanced by soaking the object to be cleaned in the water having the resistivity value of 10M? or less before cleaning, and by using a dummy substrate.

Abstract: A magnetic field generator comprises a pair of pole-piece units. The pair of pole-piece units respectively include plate yokes. Each of the plate yokes includes a surface facing the other's and provided with a permanent magnet group and a pole piece. The pole piece includes an annular projection having a plurality of annular-projection pieces and a permanent magnet for reduction of magnetic flux leakage installed on an outside surface of each annular-projection piece. When assembling the pole piece, first, the permanent magnet for reduction of magnetic flux leakage is fixed on the outside surface of each annular-projection piece. At this time, the permanent magnet is slid on the flat outside surface of the annular-projection piece, to a desired position on the annular-projection piece, and then fixed. Each of the annular-projection pieces mounted with the permanent magnet is fixed on a base plate.

Abstract: A surface-treating support member for supporting a plurality of works, including an upper cage and a lower cage including a plurality of compartments, so that the cages are openable and closeable in a lengthwise direction. A process for surface-treating a plurality of works rotates the works about their axes using the support member.

Abstract: A hollow work having a hole communicating with the outside and a fine metal powder producing material are placed into a treating vessel, where the fine metal powder producing material is brought into flowing contact with the surface of the work, thereby adhering a fine metal powder produced from the fine metal powder producing material to the surface of the work. The hollow work may be a ring-shaped bonded magnet. Thus, a film having an excellent corrosion resistance can be formed without use of a third component such as a resin and a coupling agent by providing an electric conductivity to the entire surface of the magnet, i.e., not only to the outer surface (including end faces) but also to the inner surface of the magnet and subjecting the magnet to an electroplating treatment.