Piston ring
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.
1. 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.
2. A piston ring in accordance with claim 1 , wherein the thickness of the wear-resistant coating is 5 to 60 μm.
3. A piston ring in accordance with claim 2 , wherein the thickness of the wear-resistant coating is 5 to 15 μm.
4. A piston ring in accordance with claim 2 , wherein the thickness of the wear-resistant coating is 25 to 35 μm.
5. A piston ring in accordance with claim 1 , wherein the wear-resistant coating is applied by means of a reactive arc process.
6. A piston ring in accordance with claim 1 , wherein the support material consists of steel or a cast iron material.
7. 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.
8. A piston ring in accordance with claim 7 , wherein the thickness of the wear-resistant coating is 5 to 60 μm.
9. A piston ring in accordance with claim 8 , wherein the thickness of the wear-resistant coating is 5 to 15 μm.
10. A piston ring in accordance with claim 8 , wherein the thickness of the wear-resistant coating is 25 to 35 μm.
11. A piston ring in accordance with claim 7 , wherein the wear-resistant coating is applied by means of a reactive arc process.
12. A piston ring in accordance with claim 7 , wherein the support material consists of steel or a cast iron material.
13. 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.
14. A piston ring in accordance with claim 13 , wherein the thickness of the wear-resistant coating is 5 to 60 μm.
15. A piston ring in accordance with claim 14 , wherein the thickness of the wear-resistant coating is 5 to 15 μm.
16. A piston ring in accordance with claim 14 , wherein the thickness of the wear-resistant coating is 25 to 35 μm.
17. A piston ring in accordance with claim 13 , wherein the wear-resistant coating is applied by means of a reactive arc process.
18. A piston ring in accordance with claim 13 , wherein the support material consists of steel or a cast iron material.
19. 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.
20. A piston ring in accordance with claim 19 , wherein the thickness of the wear-resistant coating is 5 to 60 μm.
21. A piston ring in accordance with claim 20 , wherein the thickness of the wear-resistant coating is 5 to 15 μm.
22. A piston ring in accordance with claim 20 , wherein the thickness of the wear-resistant coating is 25 to 35 μm.
23. A piston ring in accordance with claim 19 , wherein the wear-resistant coating is applied by means of a reactive arc process.
24. A piston ring in accordance with claim 19 , wherein the support material consists of steel or a cast iron material.