Kinetics of wetting for MgO, CaO, and BeO by Pd, Pt, and Rh melts

Abstract

The wetting of magnesium, calcium, and beryllium oxides (MgO, CaO, and BeO) is considered, depending on the ratios of the surface tensions of the oxides to the melts at inequality σ sg /σ lg < 1 characteristic of metallophobic solid surfaces. It is shown that the changes in the wetting angle with temperature during iso thermal exposure are determined by the ratio of the surface tensions of the phases σ MgO /σ Me . It is found that the wetting angle moves down or up when the ratios of the surface tensions increase or decrease, respectively, depending on the values of σ sg and σ lg .

Solid-State Dewetting of Gold on Stochastically Periodic SiO2 Nanocolumns Prepared by Oblique Angle Deposition

“…The interest of the obtained results resides not only in the direct application of the OAD SiO 2 thin films as surface templates but also in the general principle by which surface nanostructuration of materials can contribute to drastically decrease metallic adhesion. Although a similar behavior has been described before for flat surfaces of MgO, CaO, and BeO, and for nanostructured surfaces of LaPO 2 , to the best of our knowledge, this is the first time that it has been reported for nanostructured surfaces. , Besides unraveling this outstanding behavior of nanostructured OAD SiO 2 thin films, in this work, we also study the optical and texturing properties of the Au particles and prove the feasibility of tailoring their shape, size, and spatial distribution by SSD.…”

“…Although a similar behavior has been described before for flat surfaces of MgO, CaO, and BeO, and for nanostructured surfaces of LaPO 2 , to the best of our knowledge, this is the first time that it has been reported for nanostructured surfaces. 19,20 Besides unraveling this outstanding behavior of nanostructured OAD SiO 2 thin films, in this work, we also study the optical and texturing properties of the Au particles and prove the feasibility of tailoring their shape, size, and spatial distribution by SSD.…”

Neural Network Modelling on Contact Angles of Liquid Metals and Oxide Ceramics

“…17) Finally, sometimes, the contact angle shows a dynamic change over time due to chemical reactions occurring at the metal/ceramic interface. 18) Thus, the contact angle in such a case is apparent contact angle, which is also affected by the reaction energy and the non-equilibrium adsorption at the interface.…”

“…[19][20][21][22] In this paper, 1 155 contact angle data for 21 categories of metals and 14 categories of oxides were collected from over 120 research articles. 2,8,15,16,18, During these contact angle measurements, interfacial reactions may happen in some metal/oxide systems and the reaction products may affect the contact angle values. In such cases, the measured contact angle value is the apparent contact angle, which also represents the characteristics of a metal in contact with an oxide.…”

“…The detailed explanation of neural network computations can be found elsewhere. [18][19][20][21] Figure 2 shows the schematic of a neural network model, which includes an input layer, a middle layer and an output layer. Firstly, a forward propagation scheme was used.…”