Fabrication of Lotus-type Porous Ni3Al Intermetallics
نویسندگان
چکیده
منابع مشابه
Fabrication of Lotus-Type Porous Aluminum Utilizing Decomposition of Moisture
Lotus-type porous aluminum with cylindrical pores oriented in one direction was fabricated by a casting method utilizing the decomposition of moisture in a vacuum. Hydrogen decomposed from moisture is utilized for cylindrical pores to grow during unidirectional solidification. However, pores are not formed in the case of a casting in hydrogen or argon atmosphere, because hydrogen or argon gas p...
متن کاملEffect of Hydrogen Pressure on Moisture-Based Fabrication of Lotus-Type Porous Nickel
Lotus-type porous nickel, which has long straight pores aligned in one direction, was fabricated by utilizing moisture during unidirectional solidification in argon atmosphere. We studied the effect of the quantity of hydrogen in the atmosphere on the fabrication of lotus-type porous nickel. Adding hydrogen in the atmosphere, it was expected that the porosity of the lotus-type porous nickel wit...
متن کاملAn Investigation of the Use of Ni3Al Intermetallic Compound for Fabrication of Al Matrix Composites
Fabrication and characterization of aluminum matrix composites containing different volume fractions of Ni3Al powder (5-40 Vol%) were investigated. Ni3Al powder was produced by mechanical alloying of elemental nickel and aluminum powder mixture. Al-Ni3Al composite parts were prepared using a powder metallurgy route involving two stages Al and Ni3Al powder mixtures were first compacted under 500...
متن کاملAn Effect of Addition of NiO Powder on Pore Formation in Lotus-Type Porous Nickel
Lotus-type porous nickel with cylindrical pores was fabricated by unidirectional solidification in a mixture gas of hydrogen and argon. The pore size is significantly affected by the addition of NiO powder. The pore size decreases and the number density of the pores increases by the addition of NiO. It is concluded that NiO powder can serve as nucleation sites for the pore formation in the proc...
متن کاملAn Investigation of the Use of Ni3Al Intermetallic Compound for Fabrication of Al Matrix Composites
Fabrication and characterization of aluminum matrix composites containing different volume fractions of Ni3Al powder (5-40 Vol%) were investigated. Ni3Al powder was produced by mechanical alloying of elemental nickel and aluminum powder mixture. Al-Ni3Al composite parts were prepared using a powder metallurgy route involving two stages Al and Ni3Al powder mixtures were first compacted under 500...
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ژورنال
عنوان ژورنال: Journal of the Japan Institute of Metals
سال: 2004
ISSN: 0021-4876
DOI: 10.2320/jinstmet.68.39