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1. WO2020004061 - PISTON RING

Publication Number WO/2020/004061
Publication Date 02.01.2020
International Application No. PCT/JP2019/023500
International Filing Date 13.06.2019
IPC
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
J
PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
9
Piston-rings, seats therefor; Ring sealings of similar construction in general
26
characterised by the use of particular materials
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
14
Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
06
characterised by the coating material
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F
CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
5
Piston rings, e.g. associated with piston crown
F16J 9/26 (2006.01)
C23C 14/06 (2006.01)
F02F 5/00 (2006.01)
CPC
C23C 14/06
F02F 5/00
F16J 9/26
Applicants
  • TPR株式会社 TPR CO., LTD. [JP/JP]; 東京都千代田区丸の内一丁目6番2号 6-2, Marunouchi 1-chome, Chiyoda-ku, Tokyo 1000005, JP
Inventors
  • 佐藤 智之 SATO, Tomoyuki; JP
  • 北詰 豊 KITAZUME, Yutaka; JP
  • 岩下 誉二 IWASHITA, Takatsugu; JP
Agents
  • 特許業務法人秀和特許事務所 IP FIRM SHUWA; 東京都中央区東日本橋三丁目4番10号 アクロポリス21ビル8階 Acropolis 21 Building 8th floor, 4-10, Higashi Nihonbashi 3-chome, Chuo-ku, Tokyo 1030004, JP
Priority Data
2018-12383929.06.2018JP
2019-10915712.06.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PISTON RING
(FR) SEGMENT DE PISTON
(JA) ピストンリング
Abstract
(EN)
The present invention addresses the problem of providing a piston ring coated with a DLC coating that has excellent wear resistance and a low attacking property against a cylinder bore sliding surface. The problem is resolved by means of a piston ring used with engine lubricating oil and having a DLC coating on the outer circumferential sliding surface, wherein the DLC coating has an sp2 component ratio of 0.5 to 0.85, inclusive, measured using a TEM-EELS spectrum obtained by combining a transmission electron microscope (TEM) and electron energy loss spectroscopy (EELS), a coating hardness of 12 GPa to 26 GPa, inclusive, measured by nanoindentation, and a Young’s modulus of no more than 250 GPa.
(FR)
La présente invention aborde le problème de la réalisation d'un segment de piston enduit d'un revêtement DLC qui présente une excellente résistance à l'usure et une faible propriété d'attaque contre une surface de coulissement d'alésage de cylindre. La solution selon l'invention porte sur un segment de piston utilisé avec de l'huile de lubrification de moteur et ayant un revêtement DLC sur la surface de glissement circonférentielle externe, le revêtement DLC ayant un rapport de composantes sp2 de 0,5 à 0,85, inclus, mesuré à l'aide d'un spectre TEM-EELS obtenu par combinaison d'un microscope électronique à transmission (TEM) et de la spectroscopie des pertes d'énergie d'électrons (EELS), une dureté de revêtement de 12 GPa à 26 GPa, inclus, mesurée par nanoindentation, et un module de Young inférieur ou égal à 250 GPa.
(JA)
耐摩耗性に優れ、シリンダボア摺動面への攻撃性が低いDLC被膜によって被覆されたピストンリングを提供することを課題とする。エンジン潤滑油下で使用され、外周摺動面にDLC被膜を有するピストンリングであって、前記DLC被膜は、透過型電子顕微鏡(TEM)に電子エネルギー損失分光法(EELS)を組み合わせたTEM-EELSスペクトルで測定されるsp成分比が0.5以上0.85以下であり、ナノインデンテーション法により測定される被膜の硬さが12GPa以上26GPa以下であり、ヤング率が250GPa以下である、ピストンリングにより課題を解決する。
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