Claims
- 1. A coupling assembly comprising:a shaft having an outer surface with a layer of chromium; and a sleeve for receiving said shaft and having an inner surface with a layer of gold metallurgically bonded thereto, said gold layer contacting said chromium layer to form a tribological system.
- 2. The coupling assembly of claim 1 wherein said sleeve is of a material selected from a group consisting of aluminum bronze, brass, tin bronze and copper beryllium.
- 3. The coupling assembly of claim 2 wherein said shaft is made of a steel alloy.
- 4. The coupling assembly of claim 1 wherein said sleeve is of aluminum bronze.
- 5. The coupling assembly of claim 1 wherein the thickness of the chromium layer is in the range of 0.0005 to 0.002 inch.
- 6. The coupling assembly of claim 1 wherein the thickness of the gold layer is in the range of 0.0005 to 0.002 inch.
RELATED APPLICATIONS
This is a divisional of and claims priority from application Ser. No. 09/660,647, now U.S. Pat. No. 6,520,703, entitled “Coupling With Tribological Coating System”, filed Sep. 13, 2000, which is incorporated herein by reference.
US Referenced Citations (30)
Non-Patent Literature Citations (2)
Entry |
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S.C. Lim and M. F. Ashby; Overview No. 55, Wear-Mechanism Maps; Pergamon Journals Ltd; Mar. 10, 1986; Great Britain. |