Thermal dissociation of ultrafine passivated Ni powder

Allan Schrøder Pedersen; S.A. Sethi; Morten Mostgaard Eldrup

doi:10.1016/0965-9773(95)00009-4

Thermal dissociation of ultrafine passivated Ni powder

Allan Schrøder Pedersen, S.A. Sethi, Morten Mostgaard Eldrup

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Ultrafine metallic nickel was produced by the evaporation/condensation technique and subsequently passivated by controlled exposure to atmospheric air. The kinetic and thermodynamic properties of this material during heating in inert gas was studied by microgravimetry, differential scanning calorimetry and differential thermal analysis. The properties were found to be significantly different from the properties of commercial nickel oxide, viz. a smaller stability and a higher dissociation rate of the ultrafine material. The dissociation upon heating in He was found to be composed of two steps and the activation energies of the steps were measured to be 136 and 26 kJ/mol respectively.

Original language	English
Journal	Nanostruct. Mater.
Volume	5
Issue number	1
Pages (from-to)	79-86
DOIs	https://doi.org/10.1016/0965-9773(95)00009-4
Publication status	Published - 1995

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abstract = "Ultrafine metallic nickel was produced by the evaporation/condensation technique and subsequently passivated by controlled exposure to atmospheric air. The kinetic and thermodynamic properties of this material during heating in inert gas was studied by microgravimetry, differential scanning calorimetry and differential thermal analysis. The properties were found to be significantly different from the properties of commercial nickel oxide, viz. a smaller stability and a higher dissociation rate of the ultrafine material. The dissociation upon heating in He was found to be composed of two steps and the activation energies of the steps were measured to be 136 and 26 kJ/mol respectively.",

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AU - Pedersen, Allan Schrøder

AU - Sethi, S.A.

AU - Eldrup, Morten Mostgaard

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N2 - Ultrafine metallic nickel was produced by the evaporation/condensation technique and subsequently passivated by controlled exposure to atmospheric air. The kinetic and thermodynamic properties of this material during heating in inert gas was studied by microgravimetry, differential scanning calorimetry and differential thermal analysis. The properties were found to be significantly different from the properties of commercial nickel oxide, viz. a smaller stability and a higher dissociation rate of the ultrafine material. The dissociation upon heating in He was found to be composed of two steps and the activation energies of the steps were measured to be 136 and 26 kJ/mol respectively.

AB - Ultrafine metallic nickel was produced by the evaporation/condensation technique and subsequently passivated by controlled exposure to atmospheric air. The kinetic and thermodynamic properties of this material during heating in inert gas was studied by microgravimetry, differential scanning calorimetry and differential thermal analysis. The properties were found to be significantly different from the properties of commercial nickel oxide, viz. a smaller stability and a higher dissociation rate of the ultrafine material. The dissociation upon heating in He was found to be composed of two steps and the activation energies of the steps were measured to be 136 and 26 kJ/mol respectively.

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U2 - 10.1016/0965-9773(95)00009-4

DO - 10.1016/0965-9773(95)00009-4

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JO - Nanostruct. Mater.

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Thermal dissociation of ultrafine passivated Ni powder

Abstract

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