3 research outputs found
Electrochemical Properties of Bismuth Oxide Films on Titanium Formed by Plasma Electrolytic Oxidation
ΠΠ° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΠΈΡΠ°Π½Π° ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΠΎ-ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΠΊΡΠΈΠ΄ΠΈΡΠΎΠ²Π°Π½ΠΈΡ (ΠΠΠ)
ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Ρ Π²ΠΈΡΠΌΡΡΠΎΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΠ΅ ΠΎΠΊΡΠΈΠ΄Π½ΡΠ΅ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΈΠ· ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠΎΠ², ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΡ
ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΡΠ΅ ΠΈΠΎΠ½Ρ ΠΠΠ’Π-Bi3+. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ β
ΡΠΎΠΊΠΈ ΠΎΠ±ΠΌΠ΅Π½Π°, ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΡ ΠΏΠ΅ΡΠ΅Π½ΠΎΡΠ° Ξ± ΠΈ Ξ², ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΡ a ΠΈ b Π² ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΈ Π’Π°ΡΠ΅Π»Ρ.
ΠΠ»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΠ΅ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΈΠ³Π½Π°Π»Π° ΠΏΡΠΈ
ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠ½ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΌ ΡΠΈΡΡΠΎΠ²Π°Π½ΠΈΠΈ ΡΠΎΠ»Π΅ΠΉ ΠΆΠ΅Π»Π΅Π·Π° (III). Π ΡΠ΄ΠΎΠΌ ΡΠΈΠ·ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ²
(ΡΠΊΠ°Π½ΠΈΡΡΡΡΠ°Ρ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½Π°Ρ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΡ Ρ ΡΠ½Π΅ΡΠ³ΠΎΠ΄ΠΈΡΠΏΠ΅ΡΡΠ½ΡΠΌ Π°Π½Π°Π»ΠΈΠ·ΠΎΠΌ ΠΈ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΠ²ΡΠΊΠ°Ρ
ΡΠΎΡΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½Π°Ρ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΡ) ΠΈΠ·ΡΡΠ΅Π½Ρ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΡ ΠΈ ΡΠΎΡΡΠ°Π² ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΎΠΊΡΠΈΠ΄Π½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ. ΠΠ°ΠΉΠ΄Π΅Π½Π° ΠΊΠΎΡΡΠ΅Π»ΡΡΠΈΡ ΠΌΠ΅ΠΆΠ΄Ρ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΠ΅ΠΉ, ΡΠΎΡΡΠ°Π²ΠΎΠΌ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΈ
ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ²Bismuth oxide layers on a titanium are formed by a plasma electrolytic oxidation (PEO) method from
electrolytes containing complex ions EDTA-Bi3+. Electrochemical characteristics β exchange currents,
transport coefficients Ξ± and Ξ², a and b coefficients in Tafelβs equation are defined. For the obtained
systems occurrence of an analytical signal at complexometric titration of salts of Fe (III) is established.
The structural features of surface electrodes have been investigated by scanning electron microscopy
(SEM) and X-ray photoelectron spectroscopy (XPS) techniques. Correlation between morphology,
structure of a surface and electrochemical properties of samples is foun
Electronic Structure of NdFeCoB Oxide Magnetic Particles Studied by DFT Calculations and XPS
Neodymium-iron-boron magnetic oxide powders synthesized by sol–gel Pechini method were studied by using X-ray photoelectron spectroscopy (XPS) and quantum chemical modeling. The powder structure was examined by using X-ray diffraction (XRD) and modeled by using density functional theory (DFT) approximation. The electronic structures of the core and valent regions were determined experimentally by using X-ray photoelectron spectroscopy and modeled by using quantum chemical methods. This study provides important insights into the electronic structure and chemical bonding of atoms of NdFeCoB oxide particles with the partial substitution of Fe by Co atoms
Electrochemical Properties of Bismuth Oxide Films on Titanium Formed by Plasma Electrolytic Oxidation
ΠΠ° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΠΈΡΠ°Π½Π° ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΠΎ-ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΠΊΡΠΈΠ΄ΠΈΡΠΎΠ²Π°Π½ΠΈΡ (ΠΠΠ)
ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Ρ Π²ΠΈΡΠΌΡΡΠΎΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΠ΅ ΠΎΠΊΡΠΈΠ΄Π½ΡΠ΅ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΈΠ· ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠΎΠ², ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΡ
ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΡΠ΅ ΠΈΠΎΠ½Ρ ΠΠΠ’Π-Bi3+. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ β
ΡΠΎΠΊΠΈ ΠΎΠ±ΠΌΠ΅Π½Π°, ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΡ ΠΏΠ΅ΡΠ΅Π½ΠΎΡΠ° Ξ± ΠΈ Ξ², ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΡ a ΠΈ b Π² ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΈ Π’Π°ΡΠ΅Π»Ρ.
ΠΠ»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΠ΅ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΈΠ³Π½Π°Π»Π° ΠΏΡΠΈ
ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠ½ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΌ ΡΠΈΡΡΠΎΠ²Π°Π½ΠΈΠΈ ΡΠΎΠ»Π΅ΠΉ ΠΆΠ΅Π»Π΅Π·Π° (III). Π ΡΠ΄ΠΎΠΌ ΡΠΈΠ·ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ²
(ΡΠΊΠ°Π½ΠΈΡΡΡΡΠ°Ρ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½Π°Ρ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΡ Ρ ΡΠ½Π΅ΡΠ³ΠΎΠ΄ΠΈΡΠΏΠ΅ΡΡΠ½ΡΠΌ Π°Π½Π°Π»ΠΈΠ·ΠΎΠΌ ΠΈ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΠ²ΡΠΊΠ°Ρ
ΡΠΎΡΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½Π°Ρ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΡ) ΠΈΠ·ΡΡΠ΅Π½Ρ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΡ ΠΈ ΡΠΎΡΡΠ°Π² ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΎΠΊΡΠΈΠ΄Π½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ. ΠΠ°ΠΉΠ΄Π΅Π½Π° ΠΊΠΎΡΡΠ΅Π»ΡΡΠΈΡ ΠΌΠ΅ΠΆΠ΄Ρ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΠ΅ΠΉ, ΡΠΎΡΡΠ°Π²ΠΎΠΌ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΈ
ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ²Bismuth oxide layers on a titanium are formed by a plasma electrolytic oxidation (PEO) method from
electrolytes containing complex ions EDTA-Bi3+. Electrochemical characteristics β exchange currents,
transport coefficients Ξ± and Ξ², a and b coefficients in Tafelβs equation are defined. For the obtained
systems occurrence of an analytical signal at complexometric titration of salts of Fe (III) is established.
The structural features of surface electrodes have been investigated by scanning electron microscopy
(SEM) and X-ray photoelectron spectroscopy (XPS) techniques. Correlation between morphology,
structure of a surface and electrochemical properties of samples is foun