ИССЛЕДОВАНИЕ ДЖОУЛЕВА РАЗОГРЕВА ОКСИДА АЛЮМИНИЯ В ПРОЦЕССЕ ЭЛЕКТРОХИМИЧЕСКОГО АНОДИРОВАНИЯ

The temperature distribution within the anodic alumina during the anodic process has been studied. The temperature increase can reach 300 °C at high lever of Joule heat. The parameters of the heat process such as the heat temperature coefficient, the specific temperature change and the number of thermal process similarity criteria have been determined. The simulation of the temperature distribution within the test system for the given parameters of anodizing has been performed.Проведено исследование распределения температуры внутри оксида алюминия вследствие выделения джоулева тепла во время электрохимического анодирования. Обнаружено, что температура растущего оксида может достигать 300 °С в зависимости от мощности выделяемого джоулева тепла. Определен ряд параметров (коэффициент теплопередачи, удельное изменение температуры) и значения критериев подобия процесса теплопередачи. Проведено численное моделирование распределения температуры внутри исследуемых систем при заданной потребляемой мощности электрохимического анодирования

INVESTIGATION OF ALUMINA JOULE HEATING AT ELECTROCHEMICAL ANODIZATION

The temperature distribution within the anodic alumina during the anodic process has been studied. The temperature increase can reach 300 °C at high lever of Joule heat. The parameters of the heat process such as the heat temperature coefficient, the specific temperature change and the number of thermal process similarity criteria have been determined. The simulation of the temperature distribution within the test system for the given parameters of anodizing has been performed

Electromagnetic interaction of electrodeposited nickel nanowires with a niobium thin film

In this paper we present superconducting properties of a Nb thin film deposited on an array of ferromagnetic (Ni) nanowires embedded in a porous template. By investigating he Tc(H) phase boundary and by measuring V(I) characteristics and critical currents as a function of the applied magnetic field, we find that the Nb film exhibits properties similar to those of a network of one-dimensional superconducting nanowires. We attribute this behavior to the stray fields of the magnetic dipoles, which create an almost regular lattice of normal regions in the superconductor, ultimately changing its topology

Change of the topology of a superconducting thin film electromagnetically coupled with an array of ferromagnetic nanowires

We report on the superconducting properties of a Nb thin film deposited, with an interleaved insulating layer to avoid the proximity effect, on an array of ferromagnetic (Ni) nanowires embedded in a porous template. By investigating the Tc(H) phase boundary and by measuring V(I) characteristics and critical currents as a function of the applied magnetic field, we find that the Nb film exhibits properties similar to those of a network of one-dimensional superconducting nanowires. We attribute this behavior to the stray fields of the magnetic dipoles, which create an almost regular lattice of normal regions in the superconductor, ultimately changing its topology. Furthermore, there is evidence that the magnetic pinning of vortices is negligible in this structure

Investigation of alumina joule heating at electrochemical anodization

Проведено исследование распределения температуры внутри оксида алюминия вследствие выделения джоулева тепла во время электрохимического анодирования. Обнаружено, что температура растущего оксида может достигать 300 °С в зависимости от мощности выделяемого джоулева тепла. Определен ряд параметров (коэффициент теплопередачи, удельное изменение температуры) и значения критериев подобия процесса теплопередачи. Проведено численное моделирование распределения температуры внутри исследуемых систем при заданной потребляемой мощности электрохимического анодирования.The temperature distribution within the anodic alumina during the anodic process has been studied. The temperature increase can reach 300 °C at high lever of Joule heat. The parameters of the heat process such as the heat temperature coefficient, the specific temperature change and the number of thermal process similarity criteria have been determined. The simulation of the temperature distribution within the test system for the given parameters of anodizing has been performed

Change of the topology of a superconducting thin film electromagnetically coupled with an array of ferromagnetic nanowires

We report on the superconducting properties of a Nb thin film deposited, with an interleaved insulating layer to avoid the proximity effect, on an array of ferromagnetic (Ni) nanowires embedded in a porous template. By investigating the Tc(H) phase boundary and by measuring V(I) characteristics and critical currents as a function of the applied magnetic field, we find that the Nb film exhibits properties similar to those of a network of one-dimensional superconducting nanowires. We attribute this behavior to the stray fields of the magnetic dipoles, which create an almost regular lattice of normal regions in the superconductor, ultimately changing its topology. Furthermore, there is evidence that the magnetic pinning of vortices is negligible in this structure

Change of the topology of a superconducting thin film electromagnetically coupled with an array of ferromagnetic nanowires

We report on the superconducting properties of a Nb thin film deposited, with an interleaved insulating layer to avoid the proximity effect, on an array of ferromagnetic (Ni) nanowires embedded in a porous template. By investigating the T c(H) phase boundary and by measuring V(I) characteristics and critical currents as a function of the applied magnetic field, we find that the Nb film exhibits properties similar to those of a network of one-dimensional superconducting nanowires. We attribute this behavior to the stray fields of the magnetic dipoles, which create an almost regular lattice of normal regions in the superconductor, ultimately changing its topology. Furthermore, there is evidence that the magnetic pinning of vortices is negligible in this structure