发明名称 |
PISTON RING WITH CHROMIUM SOLID PARTICLE WEAR-PREVENTION LAYER AND CORROSION-RESISTANT FLANK SURFACE |
摘要 |
A coated piston ring having a base body of chromium steel with more than 10 wt.-% chromium and having an inner circumferential surface, a first flank surface, a second flank surface and an outer circumferential surface. The first flank surface comprises a nitride diffusion layer with a layer thickness of from 5-300 μm, a nitride connecting layer with a layer thickness of from 0.5-15 μm on the nitride diffusion layer, and an oxide layer with a layer thickness of from 0.05-3 μm on the nitride connecting layer. The second flank surface comprises the nitride diffusion layer, and the outer circumferential surface comprises the nitride diffusion layer and a chromium solid particle layer with 0.1-30 vol.-% solid particles, relative to the total volume of the chromium solid particle layer on the nitride diffusion layer. |
申请公布号 |
EP2825682(B1) |
申请公布日期 |
2016.03.09 |
申请号 |
EP20120809151 |
申请日期 |
2012.12.07 |
申请人 |
FEDERAL-MOGUL BURSCHEID GMBH |
发明人 |
HERBST-DEDERICHS, CHRISTIAN;URBATZKA, WALDEMAR;DÜRDOTH, STEFAN;ESSER, PETER-KLAUS |
分类号 |
C23C8/02;C23C8/80;F16J9/26 |
主分类号 |
C23C8/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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