Ferroelasticity and infrared emissivity of (Nd1- x Ca x )(Al1- x Fe x )O3- x /2x=0-0.3)

Yue ZHANG, Yanfei WANG, Jinping DU, Fan WAN, Junsheng LI, Duan LI, Rongjun LIU

Journal of Materials Engineering ›› 2023, Vol. 51 ›› Issue (11) : 87-93.

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Journal of Materials Engineering ›› 2023, Vol. 51 ›› Issue (11) : 87-93. DOI: 10.11868/j.issn.1001-4381.2023.000145
RESEARCH ARTICLE

Ferroelasticity and infrared emissivity of (Nd1- x Ca x )(Al1- x Fe x )O3- x /2x=0-0.3)

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Abstract

Using a high temperature solid state reaction at 1600 ℃ for 6 h, (Nd1- x Ca x )(Al1- x Fe x )O3- x /2x=0,0.1,0.2,0.3) was synthesized by introducing Ca2+ and Fe3+ into NdAlO3, and spark plasma sintering (SPS) ceramic samples were used to investigate the effects of Ca2+ and Fe3+ addition on the phase composition,emissivity and ferroelasticity of NdAlO3. The results show that a solid solution can be successfully fabricated through the high temperature solid state reaction. The doping of Ca2+ and Fe3+ in NdAlO3 increases oxygen vacancies and slight lattice distortion occurs,emissivity of NdAlO3 within the wavelength range of 2.5-10 μm increases the maximum to 0.9. The introduction of impurity ions makes the phase gradually transform from rhombohedral to cubic,leading to the ferroelastic domains vanish. However,the fracture toughness of ceramic samples remains at a high level.

Key words

NdAlO3 / perovskite / ferroelastic domain / emissivity / doping

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Yue ZHANG , Yanfei WANG , Jinping DU , et al . Ferroelasticity and infrared emissivity of (Nd1- x Ca x )(Al1- x Fe x )O3- x /2x=0-0.3)[J]. Journal of Materials Engineering. 2023, 51(11): 87-93 https://doi.org/10.11868/j.issn.1001-4381.2023.000145

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