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US 5,205,188 AGranted
Friction pairing and process for its production
OwnerDetlef Repenning, Barry L. Mordikeinventors
Life of this patent
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Abstract
A friction pairing of cam running surface/counterrunner layer as well as to a process for its production are described. To reduce the friction values, the counterrunner layer is a nanodisperse, amorphous, metal-carbon layer comprising 50 to 90 atomic % of carbon, 2 to 25 atomic % of hydrogen and any remainder of metal, the carbon being partly in the form of a diamond bond structure.
Claims20
A friction pairing comprising:
- a) a camshaft which contains a cam running surface,
- b) a counterrunner base;
- and
- c) a counterrunner layer which is applied to said counterrunner base and which interacts with said cam running surface,
- wherein said counterrunner layer comprises a nanodisperse, amorphous, layer including:
- i) about 50 to about 90 atomic percent carbon which at least partly is in the form of a diamond bond structure,
- ii) about 2 to about 25 atomic percent hydrogen, and
- iii) up to about 48 atomic percent of at least one metal.
5 more elements
A friction pairing comprising:
- a) a camshaft which contains a cam running surface,
- b) a counterrunner base;
- and
- c) a counterrunner layer having a thickness of about 2 to about 12 micrometers which is applied to said counterrunner base and which interacts with said cam running surface,
- wherein said counterrunner layer comprises a nanodisperse, amorphous, layer including:
- i) about 50 to about 90 atomic percent carbon which at least partly is in the form of a diamond bond structure,
- ii) about 2 to about 25 atomic percent hydrogen, and
- iii) up to about 48 atomic percent of at least one metal.
5 more elements
A friction pairing comprising:
- a) a camshaft which contains a cam running surface,
- b) a counterrunner base;
- c) a counterrunner layer which is applied to said counterrunner base and which interacts with said cam running surface, and
- d) an intermediate layer between said base and said counterrunner layer,
- wherein said counterrunner layer comprises a nanodisperse, amorphous, layer including:
- i) about 50 to about 90 atomic percent carbon which at least partly is in the form of a diamond bond structure,
- ii) about 2 to about 25 atomic percent hydrogen, and
- iii) up to about 48 atomic percent of at least one metal.
5 more elements
A friction pairing of claim 24, wherein said intermediate layer has a thickness of about 0.1 to about 5 micrometers.
Dependencies are inferred from the claim text.