Method for improving comprehensive performance of carbon nanomaterial reinforced nickel-based superalloy

A technology of nickel-based superalloy and carbon nanomaterials, which is applied in the direction of nanotechnology, nanotechnology, metal material coating technology, etc., can solve the problems of poor mechanical properties and high-temperature oxidation resistance, reduced high-temperature oxidation resistance, and poor bonding of the substrate interface and other issues to achieve the effect of improving oxidation resistance, mechanical properties, and tensile strength
CN112008087AInactive Publication Date: 2020-12-01CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2020-12-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for improving the comprehensive performance of a carbon nanomaterial reinforced nickel-based superalloy, and belongs to the field of powder metallurgy and superalloy. Aiming at the problem that the high-temperature oxidation resistance of the carbon nanomaterial reinforced nickel-based superalloy is reduced, the surface of a carbon nanomaterial is coated with a compact Ni layer for the first time, so that the problems of poor mechanical property and high-temperature oxidation resistance caused by easy agglomeration of the carbon nanomaterial, poor bonding with amatrix interface and the like are solved. Through a specific ball milling process, mixed powder with uniformly dispersed carbon nanomaterials is obtained, and further uniform dispersion of the carbonnanomaterials is realized. A carbon nanomaterial reinforced Rene104 nickel-based composite material is prepared through spark plasma sintering (SPS), hot isostatic pressing, hot pressing, hot extrusion or hot forging, or 3D printing and other powder forming methods, so that the prepared material is excellent in mechanical property and excellent in high-temperature oxidation resistance, and the problem that the carbon nanomaterial reinforced metal-based composite material cannot be used as a high-temperature structural material is effectively solved.
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Description

technical field

[0001] The invention provides a method for improving the comprehensive performance of nickel-based superalloy reinforced by carbon nanomaterials, and belongs to the field of powder metallurgy and superalloy. Background technique

[0002] Nickel-based superalloys are widely used in the manufacture of key hot-end components of aero-engines due to their excellent tensile strength, creep resistance, and fatigue crack growth resistance at high temperatures. The rapid development of a new generation of aerospace technology has put forward higher requirements for the comprehensive performance of nickel-based superalloys. Carbon nanomaterials (carbon nanotubes / graphene / carbon fibers) have the advantages of excellent strength, high thermal conductivity, and low thermal expansion coefficient, and are important reinforcement materials for metal matrix composites.

[0003] Due to the surface van der Waals force, carbon nanomaterials are easy to agglomerate, and it is di...

Claims

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