Reactive wetting
WebSep 1, 2013 · Predictive modeling of reactive wetting and metal joining. Full Record Related Research Abstract The performance, reproducibility and reliability of metal joints are complex functions of the detailed history of physical processes involved in their creation. Wetting is the ability of a liquid to maintain contact with a solid surface, resulting from intermolecular interactions when the two are brought together. This happens in presence of a gaseous phase or another liquid phase not miscible with the first one. The degree of wetting (wettability) is determined by a force … See more Adhesive forces between a liquid and solid cause a liquid drop to spread across the surface. Cohesive forces within the liquid cause the drop to ball up and avoid contact with the surface. The See more Unlike ideal surfaces, real surfaces do not have perfect smoothness, rigidity, or chemical homogeneity. Such deviations from ideality result in phenomenon called contact angle hysteresis, which is defined as the difference between the advancing (θa) and receding … See more Surfactants Many technological processes require control of liquid spreading over solid surfaces. When a drop is placed on a surface, it can completely wet, partially wet, or not wet the surface. By reducing the surface tension … See more Liquids can interact with two main types of solid surfaces. Traditionally, solid surfaces have been divided into high-energy and … See more An ideal surface is flat, rigid, perfectly smooth, chemically homogeneous, and has zero contact angle hysteresis. Zero hysteresis implies the advancing and receding contact angles are equal. In other words, only one thermodynamically stable contact angle exists. … See more If a drop is placed on a smooth, horizontal surface, it is generally not in the equilibrium state. Hence, it spreads until an equilibrium contact radius is reached (partial wetting). While taking into account capillary, gravitational, and viscous contributions, the … See more • Adsorption – Phenomenon of surface adhesion • Amott test • Anti-fog – Chemicals that prevent the condensation of water as small droplets on a surface See more
Reactive wetting
Did you know?
WebApr 1, 1996 · Reactive wetting in the liquid-silicon/solid-carbon system Full Record Related Research Abstract The wettability of glassy carbon by liquid silicon has been investigated at 1,430 C in argon by using techniques of both in situ formation and capillary formation of … WebOct 29, 2009 · An overview of reactive wetting is presented outlining the principal differences between inert and reactive wetting. New experimental evidence is presented that identifies an early time regime in reactive wetting in which spreading occurs without macroscopic morphological change of the solid–liquid interface. This regime precedes …
WebAug 1, 2010 · wetting to wetting transition observed between non-reactive and reactive alloys is due to the replacement of vitreous carbon by wettable SiC at the interface. hal … WebJan 18, 2024 · In the present work, we report the reactive wetting dynamics of molten maleic anhydride-grafted polypropylene (MA- g -PP) liquids modeled by molecular-kinetic theory (MKT). The dependencies of the contact line friction (ζ) and viscosity (η) were compared for reactive and nonreactive wetting polymer systems.
WebDec 16, 2015 · Understanding the wetting behaviour for non-reactive systems is relatively simple as compared to reactive systems. In non-reactive systems, characterized by the rapid kinetics of wetting and by weak temperature dependent variations of the contact angle (θ), the nature of the solid surface is not significantly changed by the contact with liquid ... WebDec 1, 2024 · Reactive wetting, which depends on the reaction between the active molten alloy and base materials, is a commonly used inorganic material processing approach [18], [19], [20]. Strong bonds could be formed between the two substrates via reactive wetting.
WebNov 5, 2024 · The film reduction was performed in a vacuum furnace (~1 × 10 −6 Torr) at 900 °C for 10 h. All films show that the reciprocal lattice points of film and substrate are aligned along the same [H00],...
WebApr 1, 2024 · The reactive wetting fronts are indicated by red arrows. The interfaces between the reactive wetting layer and the deposited Li metal are denoted by the … css input maxlengthWebSep 9, 2015 · The second section concerns wetting in reactive systems where a layer of a new compound is formed at the interface. Two cases will be considered: in the first case, … earl messeanWebThe reactive wetting equations for finite wetting systems have been defined by our previous work and an efficient computational method for the reactive solid–liquid interfacial … earl meyers obituaryWebOct 29, 2009 · An overview of reactive wetting is presented outlining the principal differences between inert and reactive wetting. New experimental evidence is presented … earl mh tranchandWebApr 13, 2011 · Reactive wetting of the steels by the liquid Zn (Al, Fe) bath was assessed by counting and measuring the area of bare spots in the galvanized coating within the uniform temperature and coating area. Image analysis of the bare spots on the galvanized panels was performed using a Carl Zeiss Ltd (Carl Zeiss Canada Ltd., Toronto, ON, Canada). css input placeholder 字体大小WebSep 9, 2015 · Concerning the mechanism of reactive wetting, the channels of energy dissipation are seldom discussed by the classical wetting dynamics models [91], in which … css input new lineWebDec 17, 2024 · The wetting behavior of liquid magnesium drop on pure tungsten substrates was investigated, for the first time, with the sessile drop method combined with non-contact heating and capillary purification of a Mg drop from a native oxide film. A specially designed apparatus dedicated to the investigation of the high-temperature interaction of dissimilar … earl mhb