Title:
SLIDING BEARING MADE OF TITANIUM ALLOY
Document Type and Number:
WIPO Patent Application WO/2020/189402
Kind Code:
A1
Abstract:
This spherical surface sliding bearing (A) made of a titanium alloy has a sliding surface (2) of a convex spherical surface on the outer peripheral surface of an inner ring (1) made of an α+β-type or α-type titanium alloy, wherein an outer ring comes into sliding contact with the sliding surface (2) via a lubricating liner, and the sliding surface (2) includes primary α crystal grains and secondary α crystal grains, has a hardness of 550 Hv or more at an oxygen concentration of 0.8 mass% or more, and has an oxygen diffusion layer (5) in which the oxygen concentration is continuously decreased according to the depth from the surface of the sliding surface (2).
Inventors:
DAN TAKESHI (JP)
Application Number:
PCT/JP2020/010239
Publication Date:
September 24, 2020
Filing Date:
March 10, 2020
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
C22C14/00; C23C8/16; F16C17/10; F16C33/12; F16C33/20
Domestic Patent References:
| WO2019049979A1 | 2019-03-14 | |||
| WO1997036018A1 | 1997-10-02 |
Foreign References:
| JP2018162502A | 2018-10-18 | |||
| JP2016169861A | 2016-09-23 | |||
| US20150362018A1 | 2015-12-17 | |||
| JP2013087852A | 2013-05-13 | |||
| JP2007255712A | 2007-10-04 |
Other References:
See also references of EP 3943626A4
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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