Phase relationship in the TiO2–Nd2O3 pseudo-binary system

Gong, Weiping; Zhang, Rui

doi:10.1016/j.jallcom.2012.08.112

Cited by 24 publications

(12 citation statements)

References 17 publications

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“…The peaks show a unique orientation (00l). The interreticular distances d 00l coincide with the reference data JCPDS #33-0942 corresponding to the Nd 2 Ti 2 O 7 monoclinic [28,29]. It has been reported that Nd 2 Ti 2 O 7 has a thermodynamically stable stratified perovskite structure [30].…”

Section: Resultssupporting

confidence: 74%

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Martı́nez–Gómez

Quinto-Hernandez

Flores-Garcia

et al. 2019

International Journal of Polymer Science

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In this study, the electrophoretic deposition of chitosan films doped with Nd 2 Ti 2 O 7 nanoparticles was carried out as corrosion protection systems for exposed materials in aqueous environments rich in chlorides. Completely crystalline Nd 2 Ti 2 O 7 nanoparticles with an average size of 100-200 nm were obtained. Electrophoretic deposition of chitosan films with Nd 2 Ti 2 O 7 nanoparticles was possible. With a working voltage of 5 V and 20 minutes of deposition, homogenous chitosan films with a thickness of 4 microns were obtained. According to the FT-IR (Fourier transform infrared spectroscopy), Raman, and XRD (X-ray diffraction) analyses, it was observed that the presence of the nanoparticles modified the properties of the chitosan films, that is, their crystallinity was increased and their moisture absorption capacity was reduced. These modifications caused a better performance against the corrosion of chitosan films deposited on 1018 carbon steel. Its electrochemical evaluation showed that the chitosan films perform as cathodic coatings by affecting the oxygen reduction reaction. This was possible due to the barrier effect of the Nd 2 Ti 2 O 7 nanoparticles, by blocking the effective area for the diffusion of the aggressive electrolyte species.

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Section: Resultssupporting

confidence: 74%

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Martı́nez–Gómez

Quinto-Hernandez

Flores-Garcia

et al. 2019

International Journal of Polymer Science

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“…3 ("Pyrochlore-2"). Lanthanide titanates, owing to their dielectric properties, are of interest for electrotechnical industry [35,36]. Since recently, such phases as Ln 2 TiO 5 (space group Pnma, Z = 4), Ln 2 Ti 2 O 7 (P2 1 , Z = 4), and Ln 4 Ti 9 O 24 (Fddd, Z = 16) are considered as matrices for the rare earth-actinide fraction.…”

Section: Resultsmentioning

confidence: 99%

Matrices for immobilization of the rare earth–actinide waste fraction, synthesized by cold crucible induction melting

et al. 2015

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The structure of eight samples containing simulated rare earth-actinide fraction of high-level waste was studied. Samples of weight from 0.2 to 6 kg were prepared by cold crucible induction melting followed by crystallization of the melt. The target phases (britholite, pyrochlore, zirconolite, rhombic and monoclinic rare earth titanates) prevail in all the matrices; glass, zirconolite, and rutile were detected as impurities, sometimes in significant amounts. These phases do not contain waste components (rutile) or are stable in solutions (zirconolite); therefore, their presence should not impair the properties of the matrix. The possibility of controlling the phase composition of the matrix by introducing zirconium or aluminum oxide into the charge was demonstrated.

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“…Систему TiO 2 -Nd 2 O 3 вивчено в роботах [9][10][11][12][13][14][15][16][17][18].В системі встановлено існування чотирьох сполук: Nd 2 TiO 5 (NT), Nd 2 Ti 2 O 7 (NT 2 ), Nd 2 Ti 3 O 9 (NT 3 ) та Nd 4 Ti 9 O 24 (N 2 T 9 ).…”

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“…Сполука NT з орторомбічною структурою, a о = 10,725, b о = 11,362, c о = 3,842 Å, просторова група Pnam [9]. Плавиться конгруентно при 1720 °C [10].…”

unclassified

“…Cполука NT 2 має моноклінну структуру типу пірохлору (просторова група P2 1 [3,11], a о = 13,008 Å, b о = 5,4648 Å, c о = 7,679 Å, β = 98,56º [4]). Плавиться конгруентно при 1850 °C [10]. CполукаN 2 T 9 з орторомбічною структурою, a о = 35,289, b о = 13,991, c о =14,479 Å, просторова група Pnam [12].…”

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ISOTHERMAL SECTION OF THE Al2O3–TiO2–Nd2O3 PHASE DIAGRAM AT 1400 С

Tyshchenko

Lakiza

Red’ko

2018

Odesa National University Herald. Chemistry

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Вперше побудовано ізотермічний переріз діаграми стану системи Al 2 O 3 −TiO 2 −Nd 2 O 3 при 1400 °С. Нових фаз і помітних областей гомогенності на основі компонентів та подвійних сполук не знайдено. Ізотермічний переріз містить сім вузьких двофазних та вісім трифазних областей. Можливість триангуляції системи визначається фазою Nd 2 Ti 2 O 7 , яка знаходиться в рівновазі зі сполуками

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Phase relationship in the TiO2–Nd2O3 pseudo-binary system

Cited by 24 publications

References 17 publications

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Matrices for immobilization of the rare earth–actinide waste fraction, synthesized by cold crucible induction melting

ISOTHERMAL SECTION OF THE Al2O3–TiO2–Nd2O3 PHASE DIAGRAM AT 1400 С

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Phase relationship in the TiO2–Nd2O3 pseudo-binary system

Cited by 24 publications

References 17 publications

Electrophoretic Deposition of Chitosan Films Doped with Nd2Ti2O7Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Electrophoretic Deposition of Chitosan Films Doped with Nd2Ti2O7Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Matrices for immobilization of the rare earth–actinide waste fraction, synthesized by cold crucible induction melting

ISOTHERMAL SECTION OF THE Al2O3–TiO2–Nd2O3 PHASE DIAGRAM AT 1400 С

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Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions