Piston ring
AssigneeFederal-Mogul Burscheid GmbH
InventorsSteffen Hoppe, Manfred Fischer, Christiane Bauer, Ralf Lammers
Life of this patent
Estimating the term…
Abstract
Disclosed is a piston ring comprising a supporting material and a wear-resistant coating. The wear-resistant coating is composed of a ternary system A-B—N which is applied using a PVD process and in which A and B each represent an element form the group encompassing Ti, Zr, Hf, V, Nb, Ta, Cr, Mo W, Al, Si and C, wherein A≠B and N represents nitrogen. The thickness of the wear-resistant coating amounts to ≧3 μm.
Claims24
A piston ring with a support material and a wear-resistant coating, wherein, the wear-resistant coating consists of a three-component system A-B—N applied by means of a PVD process, in which A and B are each an element from the group Ti, Zr, Hf, V, Nb, Ta, Mo, W, Al, Si and C in which A≠B and N is nitrogen, and the thickness of the wear-resistant coating is ≧3 μm.
A piston ring, comprising:
- a support material,
- a wear-resistant coating disposed on the support material,
- the wear-resistant coating being applied by a PVD process and having a thickness of >3 μm, and
- the wear resistant coating including Cr in an amount of 8.7 to 41 atomic percent, V in an amount of 14.2 to 44.7 atomic percent, and N in an amount of 42.8 to 45.6 atomic percent.
A piston ring, comprising:
- a support material,
- a wear-resistant coating disposed on the support material,
- the wear-resistant coating being applied by a PVD process and having a thickness of >3 μm, and
- the wear resistant coating including Cr in an amount of 11 to 41 atomic percent, Zr in an amount of 12 to 40 atomic percent, and N in an amount of 47 to 48 atomic percent.
A piston ring, comprising:
- a support material,
- a wear-resistant coating disposed on the support material,
- the wear-resistant coating being applied by a PVD process and having a thickness of >3 μm, and
- the wear resistant coating including Cr in an amount of 13 to 43 atomic percent, Ti in an amount of 12 to 40 atomic percent, and N in an amount of 40 to 43 atomic percent.
Dependencies are inferred from the claim text.