High strength and wear resistant multi-element copper alloy and article comprising the same
AssigneeNational Tsing Hua University
InventorJien-Wei Yeh
Life of this patent
Estimating the term…
Abstract
A high strength and wear resistant multi-element copper alloy is disclosed. The multi-element copper alloy comprises: 80-90 atomic percent Cu, 0.1-4 atomic percent Al, 6-10 atomic percent Ni, 0.1-3 atomic percent Si, 0.1-2 atomic percent V and/or Nb, and 0.1-2 atomic percent M. Experimental data reveal that, after being applied with an aging treatment under 450 degrees Celsius for 50 hours, hardness and strength of the multi-element copper alloy are both significantly enhanced because of age hardening, and softening due to overaging is not observed on the multi-element copper alloy. Moreover, measurement data have indicated that, this novel multi-element copper alloy exhibits better wear resistance superior to that of the conventional copper alloys.
Claims7
A multi-element copper alloy consisting of:
- 82 to 90 atomic percent Cu;
- 0.1 to 3.5 atomic percent Al;
- 6 to 10 atomic percent Ni;
- 0.1 to 3 atomic percent Si;
- 0.1 to 2 atomic percent N;
- and
- 0.1 to 2 atomic percent M;
- wherein N comprises at least one refractory element selected from a group consisting of Nb and V, and M comprises at least one additive element selected from a group consisting of Zr, Cr, Ti, Sn, Fe, Mn, Mg, C, P, and B;
- wherein the multi-element copper alloy shows a wear resistance greater than 415 m/mm3 and a hardness of at least HV272 after being subjected to a homogenization treatment under 900° C. for 6 hours and an age hardening under 450° C. for 50 hours.
Dependencies are inferred from the claim text.