Bubble Growth in NaCl Solution: Influence of Superheat Temperature and Solution Concentration

2021 ◽  
Author(s):  
Qi Liu ◽  
Yang Zhang ◽  
Yuxin Wu ◽  
Junfu Lyu ◽  
Qing Liu
Keyword(s):  
Bubble Growth ◽  
Solution Concentration ◽  
Nacl Solution ◽  
Superheat Temperature

Altered acceptance and rejection of NaCl in rats with diabetes insipidus

1960 ◽  
Vol 199 (1) ◽  
pp. 22-24 ◽  
Author(s):  
Libby F. Titlebaum ◽  
John L. Falk ◽  
Jean Mayer
Keyword(s):  
Diabetes Insipidus ◽  
Serum Sodium ◽  
Sodium Level ◽  
Serum Sodium Level ◽  
Extracellular Fluid ◽  
Solution Concentration ◽  
Lower Solution ◽  
Extracellular Fluid Volume ◽  
Internal Environment ◽  
Nacl Solution

Groups of normal rats and animals with diabetes insipidus were tested on their relative acceptance and rejection of various concentrations of NaCl solution. Rats with diabetes inspidus drank more than normal rats in the hypotonic range. Their acceptance was maximal at a lower solution concentration than in the case of normal animals and relative rejection began at concentrations where normals ingested maximally. The results are discussed in relation to such factors in the internal environment as serum sodium level and extracellular fluid volume.

scholarly journals Corrosion Behaviour of Zn-10Al-1.5Cu Alloy

2011 ◽  
Vol 2011 ◽  
pp. 1-6
Author(s):  
C. N. Panagopoulos ◽  
A. G. Tsopani
Keyword(s):  
Electron Microscopy ◽  
Corrosion Resistance ◽  
Corrosion Behaviour ◽  
Solution Concentration ◽  
Solution Temperature ◽  
Nacl Solution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nacl Concentration ◽  
Scanning Electron

The corrosion behaviour of Zn-10Al-1.5Cu alloy in NaCl solution was examined. The used NaCl solution concentrations were 1M, 0.3M, and 0.003M for a constant temperature values of 7°C or 25°C or 45°C. The corrosion behaviour of this alloy was investigated under potentiodynamic corrosion conditions. The surface of the corroded alloy specimens was studied with the aid of scanning electron microscopy and X-ray diffraction techniques. It was observed that the increase of NaCl concentration in the corrosion solution for a constant value of temperature led to lower corrosion resistance of the alloy. For a constant value of solution concentration, the increase of solution temperature also led to the decrease of corrosion resistance of the same alloy.

Corrosion Behavior of Rebar HRB400 in NaCl Solution

2013 ◽  
Vol 438-439 ◽  
pp. 353-356
Author(s):  
Ping Li ◽  
Ying Wang
Keyword(s):  
Corrosion Rate ◽  
Corrosion Behavior ◽  
Strong Consistency ◽  
Solution Concentration ◽  
Test Results ◽  
Nacl Solution ◽  
Corrosion Morphology ◽  
Rate Calculation ◽  
Corrosion Time

The corrosion behavior of rebar HRB400 in 0.5 wt.%, 1.5 wt.% and 3.5 wt.% NaCl solutions was investigated by corrosion rate calculation and corrosion morphology observation. The results showed that, with the increase of corrosion time from 240h to 720h, the corrosion rate of rebar HRB400 in each NaCl solution increases. With the increase of NaCl solution concentration, the corrosion rate of rebar HRB400 increases. The corrosion morphologies show strong consistency with the test results of corrosion rate.

scholarly journals Sensitivity of Corrosion Behavior for Fe-Based Amorphous Coating to Temperature and Chloride Concentration

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 331
Author(s):  
Weiyan Lu ◽  
Debin Wang ◽  
Qi Wang ◽  
Fan Yang ◽  
Tianrun Li ◽  
...  
Keyword(s):  
Polarization Resistance ◽  
Chloride Concentration ◽  
Electrochemical Measurement ◽  
Solution Concentration ◽  
Passive Films ◽  
Flat Band ◽  
Amorphous Coating ◽  
Nacl Solution ◽  
Pitting Potential ◽  
Cr2o3 Content

The effects of solution concentration and temperature on the electrochemical behavior of the Fe-based amorphous (AMCs) coatings in NaCl solution were studied by using conventional electrochemical measurement and XPS analysis. Results indicated that as solution concentration and temperature increased, the current density for the Fe-based AMCs increased and the pitting potential decreased. This reduced corrosion resistance was derived from the decreased passivation index and polarization resistance, which contributed to the decrease of the induction time (tm) for the initiation of corrosion pit. The passive films formed on Fe-based AMCs exhibit two types’ semiconductors higher and lower the flat band potential. The decrease of protectiveness of the passive film was mainly correlated with the reduction of Cr2O3 content, the increase of carrier density and the decrease of the work function (WF).

Preparation of Biodegradable Phase-Change Refrigerant Used in Insulating Packaging

2012 ◽  
Vol 200 ◽  
pp. 437-441 ◽  
Author(s):  
Yun Zhang ◽  
Jing Qian ◽  
Feng Chen
Keyword(s):  
Phase Change ◽  
Water Absorption ◽  
Solution Concentration ◽  
Polymer Materials ◽  
Basic Material ◽  
High Polymer ◽  
Nacl Solution ◽  
Phase Change Temperature ◽  
Change Temperature

The starch grafted acrylic super absorbent resin was used as a basic material of refrigerant in insulating packaging. The influence of the amount of initiator on water absorption ability of starch grafted acrylic super absorbent resin was investigated. When the amount of initiator is 4 percent of the starch, the resin's water absorption that is 230g/g displays the best. By adding NaCl solution, the phase change temperature of refrigerant can be conditioned. The experimental results show that the phase change temperature and the latent heat of refrigerant decrease as the NaCl solution concentration increases. The starch grafted acrylic super absorbent resin and the NaCl solution with the concentration of 0~5 percent as refrigerant can be used to transport the products whose required temperatures is between -4 and 0°C. The starch grafted acrylic super absorbent resin can replace the ordinary high polymer materials, playing the role of being easily biodegradable and friendly to environment.

scholarly journals Mapping the concentration changes during the dynamic processes of crevice corrosion by digital holographic reconstruction

2009 ◽  
Vol 74 (2) ◽  
pp. 197-202 ◽  
Author(s):  
Henglei Jia ◽  
Shenhao Chen ◽  
Boyu Yuan ◽  
Chao Wang ◽  
Liang Li
Keyword(s):  
Dynamic Process ◽  
Crevice Corrosion ◽  
Three Dimensional ◽  
Solution Concentration ◽  
Dynamic Processes ◽  
Nacl Solution ◽  
Valuable Method ◽  
Concentration Changes ◽  
Holographic Reconstruction

The dynamic process of crevice corrosion during anodic dissolution of a crevice electrode in a 5.0 mmol dm-3 NaCl solution has been studied by digital holographic reconstruction. Digital holographic reconstruction has been proved to be an effective and in situ technique to detect the changes in the solution concentration because useful and direct information can be obtained from the three-dimensional images. It provides a valuable method for a better understanding of the mechanism of crevice corrosion by studying the dynamic processes of changes in the solution concentration at the interface of crevice corrosion.

Bubble Lifecycle During Heterogeneous Nucleate Boiling

2018 ◽  
Vol 140 (12) ◽  
Author(s):  
Vinod Pandey ◽  
Gautam Biswas ◽  
Amaresh Dalal ◽  
Samuel W. J. Welch
Keyword(s):  
Numerical Simulations ◽  
Bubble Growth ◽  
Bubble Dynamics ◽  
Flat Surface ◽  
Nucleate Boiling ◽  
Subcooled Boiling ◽  
Subcooled Liquid ◽  
Superheat Temperature ◽  
Microlayer Evaporation ◽  
Liquid States

Heterogeneous nucleate boiling over a flat surface has been studied through complete numerical simulations. During the growth and departure of the vapor bubble, the interface is tracked following a coupled level-set and volume of fluid approach. A microlayer evaporation model similar to Sato and Niceno [“A depletable microlayer model for nucleate pool boiling,” J. Comput. Phys. 300, 20–52 (2015)] has been deployed in this investigation. A detailed study of the changes in microlayer structure as a result of different modes of boiling scenario has been performed. The departure diameter is found to increase with an increase in substrate superheat. The predicted departure diameter has been compared with the available experimental and analytical results. A power-law curve has been obtained for depicting the growth rate of bubble depending on the degree of superheat at the wall. The space–time averaged wall-heat flux at different values of superheat temperature of substrate is obtained. Bubble growth during subcooled boiling at a low and intermediate subcooled degree has been observed through direct numerical simulations. The variations in bubble dynamics after departure in saturated and subcooled liquid states have been compared.

scholarly journals Electrochemical Corrosion of Magnesium Alloy AZ31 with Additive Lithium

2017 ◽  
Vol 62 (4) ◽  
pp. 2359-2363
Author(s):  
J. Przondziono ◽  
E. Hadasik ◽  
J. Szala
Keyword(s):  
Magnesium Alloy ◽  
Electrochemical Corrosion ◽  
Solution Concentration ◽  
Corrosion Process ◽  
Nacl Solution ◽  
Scanning Microscope ◽  
Corrosion Properties ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31 ◽  
Electron Scanning Microscope

AbstractThe purpose of performed tests was evaluation of resistance to electrochemical corrosion of extruded magnesium alloy AZ31 with additive of 4.5% Li. Corrosion tests were performed in 0.01-2.0 M NaCl solutions. Potentiodynamic tests enabled to register polarisation curves. With application of stereoscopic microscope Nikon SMZ745T and electron scanning microscope Hitachi S-4200, the surface of the alloy was observed after immersion tests performed in 1-6 days. Results of performed tests prove explicitly deterioration of corrosion properties of the alloy with the increase of molar concentration of NaCl solution. It can be seen that corrosion process is intensive and that intensity increases with the increase of solution concentration and extension of exposure time.

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