High-performance phosphorus-copper alloy based on rare earth modification

Abstract

The invention discloses a high-performance phosphorus-copper alloy based on rare earth modification. The phosphorus-copper alloy comprises the following components in percentage, by mass, 5-8% of tin, 1-2% of lead, 0.3-0.7% of phosphorus, 0.2-0.4% of nickel, 0.2-0.6% of zinc, 0.01-0.03% of lanthanum, 0.02-0.05% of cerium, 0.02-0.05% of rhenium, less than or equal to 0.5% of other impurities and the balance of copper. The phosphorus content in a traditional tin-phosphorus-copper alloy is increased to 0.7% at most, the elasticity and wear resistance of the alloy are greatly enhanced, meanwhile, rare earth elements lanthanum, cerium and rhenium are added, the synergistic effect is beneficial to grain refinement, the strength, toughness, corrosion resistance and oxidation resistance of the alloy are improved, meanwhile, and the alloy can also have an alloying effect on copper, nickel and tin; the alloy activity is reduced, the mutual solubility of the alloy is increased, the oxidation resistance of the alloy is obviously improved, the surface of the alloy is modified, the surface quality is improved, and the service life is prolonged; and the rhenium element is added, so that the high-temperature strength of the alloy is improved, the rigidity strength of the rare earth nano phosphorus-copper alloy is improved, the ductility of the rare earth nano phosphorus-copper alloy is not damaged, and the rare earth nano phosphorus-copper alloy is stable and uniform in component, compact in structure and pure in surface.

Description

technical field [0001] The invention relates to the technical field of metal composite materials, in particular to a high-performance phosphorus copper alloy based on rare earth modification. Background technique [0002] Tin phosphor bronze is a relatively common phosphor copper alloy. It can obtain better mechanical properties through the action of Sn-P elements and cold work hardening. It is easy to process and punch into elastic elements of various complex shapes. It not only has excellent elasticity performance, and has the characteristics of corrosion resistance, wear resistance, and non-magnetic properties. It is currently the elastic material with the largest amount and the widest application in copper-based elastic alloy materials; In the process, segregation is easy to occur, and defects such as pores are generated. Therefore, the quality of tin phosphor bronze products in my country is still far behind that of developed countries, and the wear resistance and surface...

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Problems solved by technology

[0002] Tin phosphor bronze is a relatively common phosphor copper alloy. It can obtain better mechanical properties through the action of Sn-P elements and cold work hardening. It is easy to process and punch into elastic elements of various complex shapes. It not only has excellent elasticity performance, and has the characteristics of corrosion resistance, wear resistance, and non-magnetic properties. It is currently the elastic material with the largest amount and the widest application in copper-based elastic alloy materials; In the process, segregation is easy to occur, and defects such as pores are generated. Therefore, the quality of tin phosphor bronze products in my country is still far behind that of developed countries, and the wear resistance and surface quality are poor. It is urgent to improve the components and preparation methods.