Method for producing molybdenum alloy gas vane with powder injection forming

A gas rudder and molybdenum alloy technology, applied in the field of powder metallurgy, can solve the problems of complex processing, high cost and high density, and achieve the effects of short process cycle, low production cost and high yield
CN101293280AInactive Publication Date: 2008-10-29CENT 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
2008-10-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

A powder injection molding method is adopted to prepare molybdenum alloy gas vane with a complicated shape. Mechanical alloying is adopted in the invention for high performance ball grinding of Mo powder and one or multiple powders of Ti, Zr, Hf, Re, TiC and ZrC with the mass percent of 0.05-1.5%, and the even molybdenum pre-alloy powder is prepared; the molybdenum pre-alloy powder and an organic binder bond are mixed for preparing even feed, and the feed is injected through an injection machine to form a gas vane injection billet; after the gas vane injection billet is degreased by solvent, degreasing, carbon control and presintering are carried out in a thermal decreasing furnace; finally, high sintering is carried out on the samples after the samples are presintered, and the molybdenum alloy gas vane with high performance is prepared.
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Description

technical field

[0001] The invention relates to the field of powder metallurgy, in particular to a method for preparing a high-performance lightweight molybdenum alloy gas rudder by using powder metallurgy near-net shape technology. Background technique

[0002] Molybdenum alloy has high melting point, low thermal expansion coefficient, high wear resistance, high thermal conductivity and high high temperature strength, so it is widely used in high temperature structural parts and aviation fields. The gas rudder is an important part of the engine. It bears a huge airflow impact during operation, so it must have good high temperature strength, thermal shock resistance and ablation resistance. At present, the main materials for preparing gas rudders are W-Mo and W-Cu materials, but their high density (usually higher than 17.0g / cm 3 ) increases the overall mass of the engine, limiting the further improvement of its operating capability. In addition to high temperature strength...

Claims

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