Osg Corporation

Osg Coating Service Co., Ltd.

Hiroaki Sugita

Masatoshi Sakurai

Mei Wang

Takaomi Toihara

Takamasa Suzuki

Hiroyuki Hanyu

Takahiro Yamamoto

Toshihiro Itoh

Kenichiro Yamakawa

Mitsuyoshi Hikosaka

A hard coating includes three kinds of alternately laminated layers. The three kinds of layers consist of two kinds of single composition layers and a nanolayer-alternated layer. The two kinds of single composition layers are constituted by respective two of an A composition, a B composition and a C composition, wherein the A composition is a nitride of AlCr&#x3b1;, the B composition is a nitride of AlCrSi&#x3b2;, and the C composition is a nitride of AlCr(SiC)&#x3b3;. The nanolayer-alternated layer includes two kinds of nanolayers which are constituted by respective two of the A composition, the B composition and the C composition and which are alternately laminated. Each of the two kinds of single composition layers has a thickness of 0.5-1000 nm. Each of the two kinds of nanolayers has a thickness of 0.5-500 nm, and the nanolayer-alternated layer has a thickness of 1-1000 nm.

Hard coating and hard-coating-covered member

A hard coating, which is to be disposed to cover a surface of a substrate, has a total thickness of 0.5-20 &#x3bc;m, and includes an A layer and nanolayer-alternated layer that are alternately laminated by physical vapor deposition. The nanolayer-alternated layer includes a B layer and a C layer that are alternately laminated. The A layer has a thickness of 50-1000 nm and is AlCr nitride that is represented by a composition formula of [AlCr]N wherein an atomic ratio U is 0.20-0.80. The B layer has a thickness of 1-100 nm and is TiAl nitride that is represented by a composition formula of [TiAl]N wherein an atomic ratio W is 0.30-0.85. The C layer has a thickness of 1-100 nm and is TiSi nitride that is represented by a composition formula of [TiSi]N wherein an atomic ratio Y is 0.05-0.45. The nanolayer-alternated layer has a thickness of 50-1000 nm.

Hard coating and hard coating-covered member

A hard film excellent in abrasion resistance and heat resistance includes: a first film consisting of AlCr(SiC)&#x3b1;N, where &#x3b1; denotes one or more elements of groups IVa, Va, VIa (except Cr) of the periodic table, B, C, Si, and Y; a b, c, and d are atom ratios within ranges of 0.35&#x2266;a&#x2266;0.76, 0.12&#x2266;b&#x2266;0.43, 0.05&#x2266;c&#x2266;0.20, and 0&#x2266;d&#x2266;0.20, respectively; an atom ratio b/a of Cr to Al is within a range of 0.25&#x2266;b/a&#x2266;0.67; and a+b+c+d=1 is satisfied. The first film disposed on a top surface, the hard film having a total thickness Ttotal within a range of 0.5 &#x3bc;m to 15 &#x3bc;m with a thickness Tof the first film or, if another film portion having the same film components as the first film is included, a thickness including the film thickness Tand the another film portion accounting for 20% or more of the total thickness Ttotal.

Hard film and hard film coated tool

A hard coating film formed on a surface of a predetermined member and having excellent wear resistance and adhesion resistance, the hard coating film includes: a three-layer structure composed of a third layer formed in contact with the surface of the predetermined member, a second layer formed on the third layer, and a first layer formed on the second layer to constitute the surface; the first layer being made of (CrB(SiC))(CON) [provided that SiC is silicon carbide, and a, b, c and d are atomic ratios in ranges of 0&#x2266;a&#x2266;0.2, 0.01&#x2266;b&#x2266;0.2, 0&#x2266;c&#x2266;0.5 and 0&#x2266;d&#x2266;0.3, respectively; the second layer being made of AlCrN or AlCrDN [provided that D includes either one kind of elements of a Group IVa, a Group Va and a Group VIa (except Cr) of a Periodic Table of Elements and Y, or SiC (silicon carbide)]; and the third layer being made of nitride, carbon nitride or carbide of metals including elements of one kind or more kinds of Al, Ti, Zr, Hf, V, Nb, Ta, Cr and W.

Hard coating film and hard coating film coated working tool

A DLC-coated fishing lure includes a fishing lure base material made of metal and having a predetermined shape; an intermediate layer made of one selected from a first group, a second group and a third group, the first group consisting of at least one kind of metal selected from the IIIb group, the IVa group, the Va group and the VIa group in the periodic table of elements, the second group consisting of at least one of a carbide, a nitride and a carbonitride of the at least one kind of metal, and the third group consisting of a mutual solid solution made of at least one selected from the first group and the second group, the intermediate layer being formed on a surface of the fishing lure base material; and a DLC layer having a thickness ranging from about 0.05 &#x3bc;m to about 0.55 &#x3bc;m and formed on the intermediate layer, the DLC layer presenting an appearance of a interference color.

DLC-coated fishing lure

A hard coating that is to be disposed on a surface of a body includes a diamond layer which includes a plurality of diamond grains and is doped with boron, and an outer layer which includes an intermetallic compound and is disposed on the diamond layer by a physical vapor deposition method.

Hard coating and machining tool disposed with hard coating

A process of manufacturing a coated body including a substrate and a hard coating disposed on the substrate, wherein the hard coating has (a) a surface smoothed to have a roughness with maximum height Rz of not larger than 1.2 &#x3bc;m, and (b) recesses each of which has a size of 0.5&#x2013;6.0 &#x3bc;m and is formed in the surface, the process including a surface smoothing step of smoothing a surface of the hard coating by using abrasive particles such that the smoothed surface has the roughness with the maximum height Rz of not larger than 1.2 &#x3bc;m and such that the recesses each having the size of 0.5&#x2013;6.0 &#x3bc;m are formed in the surface of the hard coating, wherein each of the abrasive particles used in the surface smoothing step is provided by a spherical-shaped core body made of a rubber and having a particle size of 0.1&#x2013;2.0 mm, and hard abrasive grains each having a size of #3000&#x2013;#10000 and adhering to an outer surface of the spherical-shaped core body.

Process of manufacturing a coated body

A method of smoothing a surface of a diamond coating of a diamond-coated body, by using an arc-type ion plating device in which at least one target is disposed. The method includes: (a) a step of causing arc discharge between an anode, and a cathode which is provided by each of the above-described at least one target, whereby positive ions are emitted from the above-described at least one target; and (b) a step of applying a negative bias voltage to the diamond-coated body which is disposed in the arc-type ion plating device, whereby the surface of the diamond coating is bombarded with the positive Lions, so as to be smoothed by the bombardment of the positive ions against the surface of the diamond coating.

Growing community of inventors

Toyokawa, Japan

Hiroaki Sugita