Kinetic and thermodynamic studies on the incorporation of nitrogen into zirconia

Lerch, Martin; Lerch, J.; Lerch, K.

doi:10.1007/bf00241147

Cited by 26 publications

(24 citation statements)

References 1 publication

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“…Furthermore, according to the results of Lerch and Wrba,4) two types of rock-salt phase should be detectable by XRD. However, in the pre sent study, only one kind of ZrN was observed.…”

Section: Introductionmentioning

confidence: 93%

Factors Affecting the Formation Rate of ZrN by the Carbothermal Nitridation Method

Yamamura

Emoto

Mori³

1998

J. Ceram. Soc. Japan

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“…Furthermore, according to the results of Lerch and Wrba,4) two types of rock-salt phase should be detectable by XRD. However, in the pre sent study, only one kind of ZrN was observed.…”

Section: Introductionmentioning

confidence: 93%

Factors Affecting the Formation Rate of ZrN by the Carbothermal Nitridation Method

Yamamura

Emoto

Mori³

1998

J. Ceram. Soc. Japan

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“…At temperatures above 1200°C, tetragonal and cubic high temperature phases exist in the ZrO -rich part of the systems Ca-Zr-O (13) and Zr-O-N (14). The concentration of anion vacancies plays an important role in the stability of the individual phases.…”

Section: Ca-zr-o-n Systemmentioning

confidence: 99%

Synthesis and Characterization of Oxynitrides in the ZrO2-Rich Part of the Systems Ca–Zr–O–N and Mg–Zr–O–N

Lerch

Hock

et al. 1997

Journal of Solid State Chemistry

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“…An upper limit for solubility of 2.4 wt.% nitrogen in zirconia has been determined. 15 The equilibrium describing the reversible nitrogen incorporation assuming oxygen vacancies as charge compensating defects (in Kro¨ger-Vink notation) is given by:…”

Section: Introductionmentioning

confidence: 99%

Electrochemical activation of molecular nitrogen at the Ir/YSZ interface

Valov

Luerßen

Mutoro

et al. 2011

Phys. Chem. Chem. Phys.

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Nitrogen is often used as an inert background atmosphere in solid state studies of electrode and reaction kinetics, of solid state studies of transport phenomena, and in applications e.g. solid oxide fuel cells (SOFC), sensors and membranes. Thus, chemical and electrochemical reactions of oxides related to or with dinitrogen are not supposed and in general not considered. We demonstrate by a steady state electrochemical polarisation experiments complemented with in situ photoelectron spectroscopy (XPS) that at a temperature of 450 1C dinitrogen can be electrochemically activated at the three phase boundary between N 2 , a metal microelectrode and one of the most widely used solid oxide electrolytes-yttria stabilized zirconia (YSZ)-at potentials more negative than E = À1.25 V. The process is neither related to a reduction of the electrolyte nor to an adsorption process or a purely chemical reaction but is electrochemical in nature. Only at potentials more negative than E = À2 V did new components of Zr 3d and Y 3d signals with a lower formal charge appear, thus indicating electrochemical reduction of the electrolyte matrix. Theoretical model calculations suggest the presence of anionic intermediates with delocalized electrons at the electrode/electrolyte reaction interface. The ex situ SIMS analysis confirmed that nitrogen is incorporated and migrates into the electrolyte beneath the electrode.

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Kinetic and thermodynamic studies on the incorporation of nitrogen into zirconia

Cited by 26 publications

References 1 publication

Factors Affecting the Formation Rate of ZrN by the Carbothermal Nitridation Method

Factors Affecting the Formation Rate of ZrN by the Carbothermal Nitridation Method

Synthesis and Characterization of Oxynitrides in the ZrO2-Rich Part of the Systems Ca–Zr–O–N and Mg–Zr–O–N

Electrochemical activation of molecular nitrogen at the Ir/YSZ interface

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