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RESEARCH PROGRESS ON SURFACE TECHNOLOGY OF TiAl INTERMETALLICS

Jun Wu

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Abstract

TiAl alloys have specialties of low density,high specific strength,high specific stiffness,high elastic modulus,good corrosion resistance and creep resistance at high temperature.So,they become a kind of potential high-temperature structural material for the fields of aeronautics astronautics,gas turbine and automobile industries.However,before practical application,the poor high-temperature oxidation resistance and wear resistance of TiAl intermetallics must be solved.In this paper,the latest progress on surface technology for high-temperature oxidation resistance and wear resistance of TiAl alloys is reviewed.

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What this paper is about

TiAl alloys have specialties of low density,high specific strength,high specific stiffness,high elastic modulus,good corrosion resistance and creep resistance at high temperature.So,they become a kind of potential high-temperature structural material for the fields of aeronautics astronautics,gas turbine and automobile industries.However,before practical application,the poor high-temperature oxidation resistance and wear resistance of TiAl intermetallics must be solved.In this paper,the latest progress on surface technology for high-temperature oxidation resistance and wear resistance of TiAl alloys is reviewed.

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Available abstract

TiAl alloys have specialties of low density,high specific strength,high specific stiffness,high elastic modulus,good corrosion resistance and creep resistance at high temperature.So,they become a kind of potential high-temperature structural material for the fields of aeronautics astronautics,gas turbine and automobile industries.However,before practical application,the poor high-temperature oxidation resistance and wear resistance of TiAl intermetallics must be solved.In this paper,the latest progress on surface technology for high-temperature oxidation resistance and wear resistance of TiAl alloys is reviewed.

Key concepts: Materials science, Intermetallic, Metallurgy, Corrosion, Creep, Astronautics, Specific modulus, Elastic modulus

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