Daido Metal Company Ltd.

Shigeru Inami

Koji Zushi

Yukihiko Kagohara

Erina Yasuda

Tetsuya Ogawa

Kenji Nimura

Colin McAleese

Masahito Fujita

Naohisa Kawakami

Yuma Haneda

Eisaku Inoue

Manabu Izumida

Tadatoshi Nagasaki

Tomoyuki Nirasawa

Yi Zhang

Takahito Nakagawa

Kazuki Sakai

Yukihiro Ito

Masaki Hayashi

A sliding member including: a soft metal layer formed by stacking a crystal of soft metal, in which a coarse crystal is exposed on a surface of the soft metal layer, the coarse crystal has a particle length of 1.5 μm or more in a plane direction of the surface, and a distribution proportion of the coarse crystal is 5 to 50%, wherein the distribution proportion is a proportion of a circumscribed rectangle in a unit length of a virtual straight line, the circumscribed rectangle is applied to the coarse crystal appearing in a cross section of the soft metal layer, and the virtual straight line passing through the circumscribed rectangles in the cross section and parallel to a surface reference line of the soft metal layer is formed, an upper side of the circumscribed rectangle is parallel to the surface reference line of the soft metal layer, and the surface reference line is an average height of the surface of the soft metal layer appearing in the cross section.

Sliding member and method for producing same

A sliding member includes a resin overlay layer on a sliding surface side coming into sliding contact with a mating member. The resin overlay layer has a surface roughness parameter Rk satisfying 0.4&#x2264;Rk&#x2264;1.2, and a surface area ratio S=S2/S1 calculated when an area of an arbitrary measurement field of view is designated by S1 and a surface area of the measurement field of view is designated by S2 satisfies 2.5&#x2264;S&#x2264;4.5.

Sliding member

A resin coating layer has a shape line that indicates the shape of a surface and is divided by virtual straight lines parallel to the X axis and setting an area of recessed sections that protrudes below the virtual straight lines and an area of protruding sections that protrudes above the virtual straight lines. A virtual straight line at a position at which the area totals for the area of recessed sections and the area of protruding sections are equal is defined as the average line for unevenness. Areas that protrude downwards from this average line for unevenness are defined as recessed sections and areas that protrude above this average line for unevenness are defined as protruding sections. The average area Sa for one recessed section is 4-120 &#x3bc;mand the number M of recessed sections between two points having a distance of 1 mm therebetween is 3-20.

Sliding member and thrust washer

A bearing member according to an embodiment of the present invention is formed into a single cylindrical shape or a cylindrical shape divided into arcs along a circumferential direction, and is assembled to a housing on an outer peripheral side of the bearing member. The bearing member includes an outer peripheral surface provided on a side opposed to an inner peripheral surface of the housing. A maximum height Rz (&#x3bc;m) of a surface roughness of the outer peripheral surface is set as 2.00 &#x3bc;m&#x2264;Rz&#x2264;4.00 &#x3bc;m, and a value of ratio between an average protruding-peak height Rpk (&#x3bc;m) and a load length rate Mr1 (%), that is a load curve parameter for the surface roughness is set as 0.010&#x2264;Rpk/Mr1&#x2264;0.100.

Bearing member, housing, and bearing device using the same

A sliding member of the present embodiment includes a bearing alloy layer and a coating layer provided on a sliding surface side thereof. The coating layer has a resin binder with sulfide particles dispersed therein. A covering portion is provided over specific particles and is made of metal oxide comprising the same metal element as a metal element constituting the sulfide particles. When measured by an X-ray photoelectron spectroscopy and an X-ray diffraction method, a ratio of a peak height of the metal oxide to a peak height of metal sulfide by the X-ray photoelectron spectroscopy is from 0.10 to 0.50, and a ratio of the peak height of the metal oxide to the peak height of the metal sulfide by the X-ray diffraction method is 0.10 or less.

Sliding member and bearing device using the same

A resin coating layer in a sliding member has a surface shape indicated by a shape line. This shape line is divided into recessed sections and protruding sections by an average line for uneven areas. The inclination R of a straight line connecting the bottom of these recessed sections and the peak of these protruding sections is classified into Ra: R&#x3c;0.02, Rb: 0.02&#x2264;R&#x2264;0.04, and Rc: 0.04&#x3c;R. The sliding member comprises a resin coating layer fulfilling Ra+Rb&#x2265;50%.

A slide member is provided with a metal back, a bearing alloy layer disposed over a first surface of the metal back, and a diamond-like carbon layer disposed at least over a second surface of the metal back, the second surface being located on an opposite side of the first surface. The diamond-like carbon layer has a hardness equal to or less than 1000 HV and when subjected to infrared spectroscopy analysis, exhibits absorption wavenumbers of following wavenumbers (1) to (5) originating from different chemical bonding states: wavenumber (1): 2800-3100 cm, wavenumber (2): 1500-1800 cm, wavenumber (3): 1200-1500 cm, wavenumber (4): 3300-3600 cm, wavenumber (5): 730-930 cm. The relation (P+P)/(P+P+P)&#x2267;0.50 is satisfied when an integrated value of absorption rate with respect to wavenumbers (1), (2), and (3) is represented as peak area values P, P, and P, respectively.

Slide member, housing, and bearing device

A slide member provided with a substrate; and a slide layer provided in a surface side of the substrate is disclosed. The slide layer includes a soft layer in the surface side and a DLC layer in the under surface side of the soft layer. The soft layer has a Young's modulus E ranging from 6 to 30 GPa, hardness Ht ranging from 0.2 to 3.0 GPa, and a value of ratio [E/Ht] of the foregoing ranging from 10 to 30. The DLC layer has a hardness Hd ranging from 5 to 60 GPa.

Slide member

Slide member is provided with an Al-based bearing alloy layer including Al and Si particles, and DLC layer laminated over Al-based bearing alloy layer. At least some of the Si particles included in Al-based bearing alloy layer are exposed on DLC layer side surface.

Slide member is provided with an Cu-based bearing alloy layer including hard particles, and DLC layer laminated over Cu-based bearing alloy layer. At least some of the hard particles included in Cu-based bearing alloy layer are exposed on DLC layer side surface.

A plain bearing is provided which has an Sn-and-Si-rich layer formed of an Al alloy containing Sn and Si, and a base material which does not contain Sn. The Sn-and-Si-rich layer have the sliding surface having an area ratio of Sn phase grains in a range of 6 to 40% and that of Si phase grains in a range of 5 to 25%.

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Inuyama, Japan

Shigeru Inami