The cerium-nitrogen-oxygen system. Oxygen as a component in the "binary" Ce-N system at 950°C

R. C. Brown; N. J. Clark

doi:10.1016/0025-5408(74)90182-2

The cerium-nitrogen-oxygen system. Oxygen as a component in the "binary" Ce-N system at 950°C

R. C. Brown
, N. J. Clark

College of Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Cerium nitride prepared by reacting the metal with nitrogen at 795°C is inhomogeneous with an outer nitride layer surrounding a core of cerium oxynitride. Long annealing at 950°C produces a homogeneous product. The variation of the lattice parameter of the cerium nitride in two phase cerium nitride-metal mixtures indicates the system must be considered as ternary with oxygen as the third component. The literature value of 5.023₅Å for the lattice parameter of CeN is believed to refer to a low oxygen content substoichiometric nitride and extrapolation predicts 5.020Å as the lattice parameter of oxygen free, stoichiometric CeN.

Original language	English
Pages (from-to)	1007-1015
Number of pages	9
Journal	Materials Research Bulletin
Volume	9
Issue number	7
DOIs	https://doi.org/10.1016/0025-5408(74)90182-2
Publication status	Published - Jul 1974

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title = "The cerium-nitrogen-oxygen system. Oxygen as a component in the {"}binary{"} Ce-N system at 950°C",

abstract = "Cerium nitride prepared by reacting the metal with nitrogen at 795°C is inhomogeneous with an outer nitride layer surrounding a core of cerium oxynitride. Long annealing at 950°C produces a homogeneous product. The variation of the lattice parameter of the cerium nitride in two phase cerium nitride-metal mixtures indicates the system must be considered as ternary with oxygen as the third component. The literature value of 5.0235{\AA} for the lattice parameter of CeN is believed to refer to a low oxygen content substoichiometric nitride and extrapolation predicts 5.020{\AA} as the lattice parameter of oxygen free, stoichiometric CeN.",

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AU - Clark, N. J.

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N2 - Cerium nitride prepared by reacting the metal with nitrogen at 795°C is inhomogeneous with an outer nitride layer surrounding a core of cerium oxynitride. Long annealing at 950°C produces a homogeneous product. The variation of the lattice parameter of the cerium nitride in two phase cerium nitride-metal mixtures indicates the system must be considered as ternary with oxygen as the third component. The literature value of 5.0235Å for the lattice parameter of CeN is believed to refer to a low oxygen content substoichiometric nitride and extrapolation predicts 5.020Å as the lattice parameter of oxygen free, stoichiometric CeN.

AB - Cerium nitride prepared by reacting the metal with nitrogen at 795°C is inhomogeneous with an outer nitride layer surrounding a core of cerium oxynitride. Long annealing at 950°C produces a homogeneous product. The variation of the lattice parameter of the cerium nitride in two phase cerium nitride-metal mixtures indicates the system must be considered as ternary with oxygen as the third component. The literature value of 5.0235Å for the lattice parameter of CeN is believed to refer to a low oxygen content substoichiometric nitride and extrapolation predicts 5.020Å as the lattice parameter of oxygen free, stoichiometric CeN.

UR - https://www.scopus.com/pages/publications/0346087991

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ER -

The cerium-nitrogen-oxygen system. Oxygen as a component in the "binary" Ce-N system at 950°C

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