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Use of powder metal sintering/diffusion bonding to enable applying silicon carbide or rhenium alloys to face seal rotors
Use of powder metal sintering/diffusion bonding to enable applying silicon carbide or rhenium alloys to face seal rotors
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机译:使用粉末金属烧结/扩散结合以将碳化硅或rh合金应用于端面密封转子
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摘要
A method for making aerospace face seal rotors reinforced by rhenium metal, alloy, or composite in combination with silicon carbide or other ceramic. The resulting rotor also is disclosed. Ceramic grains, preferably silicon carbide (SiC), are mixed with powdered metallic (PM) binder that may be based on a refractory metal, preferably rhenium. The mixture is applied to a rotor substrate. The combined ceramic-metal powder mixture is heated to sintering temperature under pressure to enable fusion of the ceramic in the resulting metal-based substrate. A load may then be applied under an elevated temperature. The resulting coated rotor can exhibit high hot hardness, increased durability and/or high hot wear resistance, as well as high thermal conductivity.
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