公开(公告)号：US20150137457A1

公开(公告)日：2015-05-21

申请号：US14610006

申请日：2015-01-30

Applicant: TPR CO., LTD.

Inventor： Takatsugu IWASHITA ,  Tomoyuki SATO

IPC: F16J9/26

CPC classification number: F16J9/26 ,  C23C14/0605 ,  C23C14/16 ,  C23C28/044 ,  C23C28/44

Abstract: A piston ring which is provided with a carbon-based coating which has a low friction property and wear resistance, that is, a piston ring which has a carbon-based coating formed over its sliding surface, in which piston ring, the coating is a multilayer coating comprised of two types of layers having different hardnesses laminated in at least two layers, a hardness difference between the two types of layers is 500 to 1700 HV, a high hardness layer has the same or greater thickness than a low hardness layer, and the coating as a whole has a thickness of 5.0 μm or more. The high hardness layer has a thickness of 5 to 90 nm. The surface on which the coating is formed has a base material roughness of 1.0 μmRz or less.

Abstract translation: 一种具有低摩擦性和耐磨性的碳基涂层的活塞环，即在其滑动面上形成有碳基涂层的活塞环，其中活塞环，涂层为 由具有不同硬度的两种类型的层压至少两层的多层涂层，两种类型的层之间的硬度差为500至1700HV，高硬度层具有与低硬度层相同或更大的厚度，以及 涂层整体的厚度为5.0μm以上。 高硬度层的厚度为5〜90nm。 形成涂层的表面的基材粗糙度为1.0μmRz以下。