scholarly journals Enhancing capacitor lifetime by alternate constant polarization

2021 ◽  
Vol 506 ◽  
pp. 230131
Author(s):  
Justyna Piwek ◽  
Anetta Platek-Mielczarek ◽  
Elzbieta Frackowiak ◽  
Krzysztof Fic
CORROSION ◽  
1975 ◽  
Vol 31 (6) ◽  
pp. 192-197
Author(s):  
L. S. SU ◽  
E. SHEPPARD

Abstract The complex corrosion mechanisms for pressurized aqueous solutions in contact with various aerosol containers were studied electrochemically. A pressurized corrosion cell consisting of an aerosol container serving as the working electrode, a platinum rod serving as a hybrid reference-counter electrode, and the pressurized liquids as the electrolyte was designed and fabricated. The correlation of the results between two accelerated electrochemical corrosion tests, namely the galvanostatic polarization test and a 24-hour accelerated constant polarization potential test, and a 10-week storage test, was excellent. It was found that the addition of 0.1%disodium phosphate (DSP) to the aqueous solutions pressurized with a 10% isobutane-propane propellent blend changed the color of the systems to colorless, produced an electrodeposition of colloidal particles, and shifted the site of the crevice corrosion from the bulk-stagnant interface towards the stagnant area. Three distinct and characteristic zones of the polarization potential responses were observed during the anodic galvanostatic polarization measurements, and their mechanisms are discussed.


2019 ◽  
Vol 11 (2) ◽  
pp. 53
Author(s):  
Edward Jiménez ◽  
Nicolás Recalde ◽  
Wilson P. Álvarez-Samaniego ◽  
Borys Álvarez-Samaniego ◽  
Douglas Moya-Álvarez ◽  
...  

By using X-rays of a linear accelerator (LINAC Siemens X rays, 6 MeV) for medical use, we were able to measure gravitational waves, GW, (amplitude = 56:385mm, frequency =1 = 3Hz, velocity = c and polarization) and its threedimensional effect on X-ray trajectories. The collimated X-ray beam, which is in the plane (X; Y); travels on the Z axis at the speed of light in air and passing through the machine isocenter, until it reaches the target and, ultimate, is recorded in a radiographic film. Apparently, there is an exceptional coincidence in the operation of LINAC and the presence of GW. This coincidence occurred in VIRGINIA, GPS (38.634 351 1, -77.282 523 9), UTC (12/06/2011: 12: 56: 01). This important event, but not sui generis, was recorded in the LINAC computer system, on a film for radiography, in the log file of the cancer treatment center and it was reported to SIEMENS in order to try to find an explanation of a possible hardware failure, some abnormality or any software issue. The physicist and Siemens service engineer on site concluded that such event should never happened because LINAC was not malfunctioning. Consequently, for the X-rays, there was a deviation of the isocenter of the LINAC (△X = (11:5 ± 0:5)mm, △Y = (48 ± 0:5)mm), by the action of the amplitude of GW. The tolerance of a LINAC is lower than these measurements, and the equipment will stop working if they are greater than ±1:0mm for isocenter (zero position) and ±2:0mm for other collimator leaf positions. Therefore, this constitutes a register of space-time alteration with a consequent variation of the path of the X-ray beam. Finally, the registered gravitational waves leave invariant the angle between the axes (X; Y), of the X-ray beam, indicating a constant polarization.


1989 ◽  
Vol 6 (2) ◽  
pp. 179-183
Author(s):  
Zhou Wenpu ◽  
Zhang Rirong

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