Impact of Acoustical Reflections on Megasonic Cleaning Performance

2019 ◽  
Vol 25 (5) ◽  
pp. 287-294 ◽  
Author(s):  
Steven Brems ◽  
Marc Hauptmann ◽  
Elisabeth Camerotto ◽  
Antoine Pacco ◽  
Sandip Halder ◽  
...  
Keyword(s):  
Megasonic Cleaning ◽  
Cleaning Performance

scholarly journals Interaction between Free-Surface Oscillation and Bubble Translation in a Megasonic Cleaning Bath

2021 ◽  
Vol 314 ◽  
pp. 202-206
Author(s):  
Yu Katano ◽  
Keita Ando
Keyword(s):  
Free Surface ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Video Camera ◽  
Acoustic Radiation Force ◽  
Surface Oscillation ◽  
Megasonic Cleaning ◽  
Cleaning Performance ◽  
Cavitation Bubbles ◽  
Visualization Experiments

Visualization experiments were performed to study the relation between free-surface motion and bubble translation in a 1-MHz ultrasonic cleaning bath. From the visualization with a video camera, the characteristic frequencies of the free-surface oscillation (under the acoustic radiation force) and the translational velocity of cavitation bubbles (trapped via the primary Bjerknes force) were extracted, showing that there is a strong correlation between the free-surface oscillation and bubble translation. From the context of megasonic cleaning, such free-surface oscillation is expected to contribute to uniform cleaning performance with cavitation bubbles.

Effects of Relevant Detergent Components on the Cleaning Performance in Low Temperature Electric Household Dishwashing

2016 ◽  
Vol 53 (5) ◽  
pp. 478-486 ◽  
Author(s):  
Susanne Gorny ◽  
Sandra Bichler ◽  
Rainer Stamminger ◽  
Monika Seifert ◽  
Arnd Kessler ◽  
...  
Keyword(s):  
Low Temperature ◽  
Cleaning Performance

Mechanochemical durability and self-cleaning performance of zinc oxide-epoxy superhydrophobic coating prepared via a facile one-step approach

2021 ◽  
Vol 47 (11) ◽  
pp. 15825-15833
Author(s):  
Suk Wy Yap ◽  
Norhasnidawani Johari ◽  
Saiful Amri Mazlan ◽  
Noor Azlina Hassan
Keyword(s):  
Zinc Oxide ◽  
Superhydrophobic Coating ◽  
Cleaning Performance ◽  
One Step ◽  
Self Cleaning

Investigation of the different particle size dust releases from rigid filter candles during pulse-jet cleaning

2021 ◽  
pp. 095440622110179
Author(s):  
Xin Luan ◽  
Zhongli Ji ◽  
Longfei Liu ◽  
Ruifeng Wang
Keyword(s):  
Particle Size ◽  
Critical Role ◽  
Operating Conditions ◽  
Solid Particles ◽  
Dust Particles ◽  
Cleaning Efficiency ◽  
Term Operation ◽  
Cleaning Performance ◽  
Experimental Apparatus ◽  
Pulse Jet

Rigid filters made of ceramic or metal are widely used to remove solid particles from hot gases at temperature above 260 °C in the petrochemical and coal industries. Pulse-jet cleaning of fine dust from rigid filter candles plays a critical role in the long-term operation of these filters. In this study, an experimental apparatus was fabricated to investigate the behavior of a 2050 mm filter candle, which included monitoring the variation of pressure dynamic characteristics over time and observing the release of dust layers that allowed an analysis of the cleaning performance of ISO 12103-1 test dusts with different particle size distributions. These results showed the release behavior of these dusts could be divided into five stages: radial expansion, axial crack, flaky release, irregular disruption and secondary deposition. The cleaning performance of smaller sized dust particles was less efficient as compared with larger sized dust particles under the same operating conditions primarily because large, flaky-shaped dust aggregates formed during the first three stages were easily broken into smaller, dispersed fragments during irregular disruption that forced more particles back to the filter surface during secondary deposition. Also, a “low-pressure and long-pulse width” cleaning method improved the cleaning efficiency of the A1 ultrafine test dust from 81.4% to 95.9%.

Well Cleaning Performance

2004 ◽  
Author(s):  
A. Saasen ◽  
K. Svanes ◽  
T.H. Omland ◽  
E. Mathiassen ◽  
O. Vikane
Keyword(s):  
Cleaning Performance

scholarly journals Silicon Oxide Etching Process of NF3 and F3NO Plasmas with a Residual Gas Analyzer

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3026
Author(s):  
Woo-Jae Kim ◽  
In-Young Bang ◽  
Ji-Hwan Kim ◽  
Yeon-Soo Park ◽  
Hee-Tae Kwon ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Silicon Oxide ◽  
Gas Analysis ◽  
Gas Analyzer ◽  
Dc Offset ◽  
Cleaning Performance ◽  
Oxide Etching ◽  
Residual Gas ◽  
Etch Rates ◽  
Very High

The use of NF3 is significantly increasing every year. However, NF3 is a greenhouse gas with a very high global warming potential. Therefore, the development of a material to replace NF3 is required. F3NO is considered a potential replacement to NF3. In this study, the characteristics and cleaning performance of the F3NO plasma to replace the greenhouse gas NF3 were examined. Etching of SiO2 thin films was performed, the DC offset of the plasma of both gases (i.e., NF3 and F3NO) was analyzed, and a residual gas analysis was performed. Based on the analysis results, the characteristics of the F3NO plasma were studied, and the SiO2 etch rates of the NF3 and F3NO plasmas were compared. The results show that the etch rates of the two gases have a difference of 95% on average, and therefore, the cleaning performance of the F3NO plasma was demonstrated, and the potential benefit of replacing NF3 with F3NO was confirmed.

Sepiolite-based superamphiphobic coating with excellent robustness, chemical stability and self-cleaning performance

2021 ◽  
Vol 157 ◽  
pp. 106297
Author(s):  
Beibei Chen ◽  
Zhe Dong ◽  
Yuhan Jia ◽  
Jiaye Li ◽  
Mengjie Zhang ◽  
...  
Keyword(s):  
Chemical Stability ◽  
Cleaning Performance ◽  
Self Cleaning
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