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公开(公告)号：US10006546B2
公开(公告)日：2018-06-26
申请号：US15025732
申请日：2014-09-26
Applicant: KABUSHIKI KAISHA RIKEN
Inventor： Masayuki Sato , Yuuichi Murayama , Youhei Iwamoto , Takuma Sekiya
CPC classification number: F16J9/26 , B23P15/06 , B24B19/11 , C23C14/0021 , C23C14/0641 , C23C14/0664 , C23C14/325 , C23C28/042 , C23C28/044 , C23C28/347 , C23C28/42
Abstract: To provide a piston ring having a hard laminate coating having excellent scuffing resistance, wear resistance and peeling resistance, which can be used in an environment of high mechanical and thermal load in engines, the piston ring is provided on its outer peripheral sliding surface with a CrN-type hard coating as thick as 10-60 μm and comprising a CrN/CrCN laminate coating having hardness Hv of 1000 or more and residual compression stress of 1500 MPa or less, a laminate unit composed of a CrN layer and a CrCN layer being as thick as 30 nm or more; the CrN/CrCN laminate coating being formed by alternately laminating CrN layers and CrCN layers containing C dissolved in CrN by ion plating.
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公开(公告)号：US09447879B2
公开(公告)日：2016-09-20
申请号：US14650115
申请日：2013-12-06
Applicant: KABUSHIKI KAISHA RIKEN
Inventor： Masayuki Sato , Yuuichi Murayama , Youhei Iwamoto
CPC classification number: F16J9/26 , C23C14/0641 , C23C14/325 , C23C28/042 , C23C28/044 , C23C28/42 , F02F5/00
Abstract: To provide a piston ring having a hard laminate coating for excellent scuffing resistance, wear resistance and peeling resistance, which can be used in an environment of high mechanical and thermal load in engines, the piston ring is provided with a hard laminate coating as thick as 10-60 μm on its outer peripheral surface, the laminate coating being formed by alternately laminating two types or more of layers made of different compounds, each of the compound layers being made of nitride of at least one metal selected from the group consisting of Ti, Cr, Zr, V, Hf and Al.
Abstract translation: 为了提供一种具有硬层压涂层的活塞环，其具有优异的耐擦伤性，耐磨性和耐剥离性，可用于发动机中高机械和热负荷的环境中，活塞环上设有厚度为 在其外周面上具有10-60μm的层压涂层，通过交替层叠两种或更多种由不同化合物制成的层来形成层压涂层，每个化合物层由至少一种选自Ti ，Cr，Zr，V，Hf和Al。
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公开(公告)号：US10006547B2
公开(公告)日：2018-06-26
申请号：US15033308
申请日：2014-10-27
Applicant: KABUSHIKI KAISHA RIKEN
Inventor： Masayuki Sato , Yuuichi Murayama , Youhei Iwamoto , Takuma Sekiya
CPC classification number: F16J9/26 , C23C14/0641 , C23C14/0664 , C23C14/16 , C23C28/042 , C23C28/044 , C23C28/322 , C23C28/34 , C23C28/343 , C23C28/42
Abstract: To provide a hard-amorphous-carbon-coated piston ring having low friction and excellent wear resistance and peeling resistance to reduce the fuel consumption of automobiles, an outer peripheral surface of a steel-made piston ring base material is provided with a primary layer constituted by a CrN/Cr laminate coating or a CrN/TiN laminate coating as thick as 10-60 μm, which is obtained by alternately laminating CrN-type chromium nitride and chromium metal or TiN-type titanium nitride, an intermediate layer of chromium metal and/or titanium metal as thick as 0.05-1.0 μm, and then a hard amorphous carbon coating as thick as 0.4-20 μm.
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