In-situ reaction synthesis and decomposition of Ta2AlC
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Chunfeng Hu
, Jie Zhang , Yiwang Bao , Jingyang Wang , Meishuan Li und Yanchun Zhou
Abstract
Dense bulk Ta2AlC ceramic was fabricated by in-situ reaction/hot pressing of Ta, Al and C powders. The reaction path and effects of initial composition on the purity were investigated. It was found that Ta2AlC formed through the reactions between AlTa2 and graphite, or between Ta5Al3C, TaC and graphite at 1500–1550°C. By modifying the molar ratio of the initial Ta, Al, and C powders, single-phase Ta2AlC was prepared at 1550°C under an Ar atmosphere with an optimized composition of Ta: Al: C = 2: 1.2: 0.9. The lattice parameter and a new set of X-ray diffraction data of Ta2AlC were obtained. In addition, Ta2AlC was reported unstable above 1600°C and decomposed to Ta4AlC3, and then to TaCx.
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© 2008, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Prof. Dr.-Ing. habil. Dr.-Ing. E. h. Werner Schatt zum 85. Geburtstag
- Basic
- In-situ reaction synthesis and decomposition of Ta2AlC
- A new theoretical equation for temperature dependent self-diffusion coefficients of pure liquid metals
- Thermodynamic characterization of liquid alloys with demixing tendency: Bi–Ga
- Space charge effects in confined ceramic systems
- Solute transport and phase composition in an Al–Mg–Si alloy solidified under conditions of forced flow
- Evidence of α → ω phase transition in titanium after high pressure torsion
- Thermodynamic properties and elastic constants of Nd–Mg intermetallics: a molecular dynamics study
- Microstructure, texture and mechanical properties of the magnesium alloy AZ31 processed by ECAP
- Applied
- Effect of solidification microstructure and Ca additions on creep strength of magnesium alloy AZ91 processed by Thixomolding
- Magnetic hardening mechanism of PrCo5-based ribbons with C addition prepared by melt spinning
- Studies on the exchange and dipolar couplings in Nd2Fe14B/α-Fe
- Microstructural characteristics and elevated temperature wear of Ti-11Si-16Al alloy
- Nickel coating on some organic and carbon fibres by chemical plating
- Wear and corrosion properties of nanocrystalline coatings on stainless steel produced by plasma electrolytic nitrocarburizing
- The characterisation of microstructural changes in rapidly solidified Al–Fe alloys through measurement of their electrical resistance
- Solid inclusion cakes formed during pressure filtration tests of liquid aluminum alloys
- Performance of Ni/YSZ cermet cathode prepared by mechanical alloying for high temperature electrolysis of water vapor (steam): effect of anode and cathode thicknesses on the efficiency of hydrogen production
- Review
- Practical aspects and implications of interfaces in glass-ceramics: a review
- Notifications
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Prof. Dr.-Ing. habil. Dr.-Ing. E. h. Werner Schatt zum 85. Geburtstag
- Basic
- In-situ reaction synthesis and decomposition of Ta2AlC
- A new theoretical equation for temperature dependent self-diffusion coefficients of pure liquid metals
- Thermodynamic characterization of liquid alloys with demixing tendency: Bi–Ga
- Space charge effects in confined ceramic systems
- Solute transport and phase composition in an Al–Mg–Si alloy solidified under conditions of forced flow
- Evidence of α → ω phase transition in titanium after high pressure torsion
- Thermodynamic properties and elastic constants of Nd–Mg intermetallics: a molecular dynamics study
- Microstructure, texture and mechanical properties of the magnesium alloy AZ31 processed by ECAP
- Applied
- Effect of solidification microstructure and Ca additions on creep strength of magnesium alloy AZ91 processed by Thixomolding
- Magnetic hardening mechanism of PrCo5-based ribbons with C addition prepared by melt spinning
- Studies on the exchange and dipolar couplings in Nd2Fe14B/α-Fe
- Microstructural characteristics and elevated temperature wear of Ti-11Si-16Al alloy
- Nickel coating on some organic and carbon fibres by chemical plating
- Wear and corrosion properties of nanocrystalline coatings on stainless steel produced by plasma electrolytic nitrocarburizing
- The characterisation of microstructural changes in rapidly solidified Al–Fe alloys through measurement of their electrical resistance
- Solid inclusion cakes formed during pressure filtration tests of liquid aluminum alloys
- Performance of Ni/YSZ cermet cathode prepared by mechanical alloying for high temperature electrolysis of water vapor (steam): effect of anode and cathode thicknesses on the efficiency of hydrogen production
- Review
- Practical aspects and implications of interfaces in glass-ceramics: a review
- Notifications
- DGM News