Semi-empirical description of the constant β in the equation of state for interfacial tension

Mechanical properties and oxidation corrosion resistance of phosphate ceramic coating enhanced by SiO2‐BNNSs material

“…Therefore, it can quantitatively characterize the degree of adhesion between the water and the coating. The solid surface tension γ s was calculated according to the Young's equation and Neumann “EOS” equation, 39,40 as shown in Equations () and (), where $${\theta }_{\mathrm{Y}}$$ is the Young's contact angle, γ l is the surface tension coefficient of water (72.8 mJ/m 2 ), and $$\beta $$ is the empirical constant, usually taking .0001247 (mJ/m 2 ) −2 . The surface adhesion work W a was calculated from the solid surface tension γ s , the liquid surface tension γ sl , and the surface tension of water $${\gamma }_{\mathrm{l}}$$, 41 as shown in Equation ().…”