Aqueous tape casting and mechanical properties of La2NiO4+δ dense membranes

Chen, Xinzhi; Einarsrud, Mari‐Ann; Grande, Tor

doi:10.1016/j.jeurceramsoc.2014.07.033

Journal of the European Ceramic Society

2015

DOI: 10.1016/j.jeurceramsoc.2014.07.033

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Aqueous tape casting and mechanical properties of La2NiO4+δ dense membranes

Xinzhi Chen

Mari‐Ann Einarsrud

Tor Grande

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Cited by 5 publications

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References 26 publications

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“…To overcome those matters, wet fabrication routes have drifted towards to aqueous processing in recent years. [20][21][22][23][24][25][26][27] Understanding the surface chemistry of ceramic powders is a critical step for utilization of aqueous processing. Like most oxide systems, some perovskite structures are also thermodynamically unstable in aqueous medium.…”

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confidence: 99%

Chemical stability of KNbO₃, NaNbO₃, and K_0.5Na_0.5NbO₃ in aqueous medium

2017

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In recent years, potassium sodium niobate (K0.5Na0.5NbO3, KNN) has become popular and promising among perovskite lead‐free piezoceramic systems. In this study, the chemical stability of KNN powders in aqueous medium was investigated as a function of pH, time, and powder surface area. To better understand the dissolution behavior of the complex KNN stoichiometry, subconstituents such as potassium niobate (KNbO3, KN) and sodium niobate (NaNbO3, NN) were investigated separately first. Results showed that all of the cations in the structure underwent dissolution in different values. Indicating that KNN undergoes incongruent dissolution in aqueous medium, the dissolution of A site cations was higher at lower pH while the dissolution of B site cations increased at higher initial pH. The order of released cation concentrations (CA1 = K > CA2 = Na > CB = Nb) fits with inverse relationship of cation field strength (FS) order, B = Nb5+FS > A2 = Na+FS>A1 = K+FS, at pH 4, 7 and 10 for NN, KN, and KNN. Calculated diffuse layer thickness from the ICP data confirmed to outer amorphous layer in TEM image. Also, the ratio of normalized cation concentration versus surface area of powders showed that incongruent dissolution kinetic was driven by the diffusion step.

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Chemical stability of KNbO₃, NaNbO₃, and K_0.5Na_0.5NbO₃ in aqueous medium

2017

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Effect of Sr 2+ and Ba 2+ doping on structural stability and mechanical properties of La 2 NiO 4+δ

Akbari‐Fakhrabadi

Toledo

Canales

et al. 2018

Ceramics International

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Effects of pressure and doping on Ruddlesden-Popper phases La+1Ni O3+1

Zhang,

Pei,

Wang

et al. 2024

Journal of Materials Science & Technology

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Aqueous tape casting and mechanical properties of La2NiO4+δ dense membranes

Cited by 5 publications

References 26 publications

Chemical stability of KNbO₃, NaNbO₃, and K_0.5Na_0.5NbO₃ in aqueous medium

Chemical stability of KNbO₃, NaNbO₃, and K_0.5Na_0.5NbO₃ in aqueous medium

Effect of Sr 2+ and Ba 2+ doping on structural stability and mechanical properties of La 2 NiO 4+δ

Effects of pressure and doping on Ruddlesden-Popper phases La+1Ni O3+1

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Aqueous tape casting and mechanical properties of La2NiO4+δ dense membranes

Cited by 5 publications

References 26 publications

Chemical stability of KNbO3, NaNbO3, and K0.5Na0.5NbO3 in aqueous medium

Chemical stability of KNbO3, NaNbO3, and K0.5Na0.5NbO3 in aqueous medium

Effect of Sr 2+ and Ba 2+ doping on structural stability and mechanical properties of La 2 NiO 4+δ

Effects of pressure and doping on Ruddlesden-Popper phases La+1Ni O3+1

Contact Info

Product

Resources

About

Chemical stability of KNbO₃, NaNbO₃, and K_0.5Na_0.5NbO₃ in aqueous medium

Chemical stability of KNbO₃, NaNbO₃, and K_0.5Na_0.5NbO₃ in aqueous medium