Microhardness of Sol-Gel Films with Various Textures

• Published in: Glass and ceramics Vol. 57; no. 7-8; pp. 230 - 233
• Main Authors: Atkarskaya, A B, Kiyan, V I
• Format: Journal Article
• Language: English
• Published: New York Springer Nature B.V 01-07-2000
• Subjects: Coating; Deposition; Microhardness; Sol gel process; Surface layer; Texture; Titanium dioxide; Turbulent flow
• ISSN: 0361-7610; 1573-8515
• DOI: 10.1023/A:1007190028834

The effect of the regime of deposition (the rate of the deposition and the total content of film-forming oxides in the solution) on the microhardness of sol-gel films with a molar composition of 22% Bi^sub 2^O^sub 3^, 25% Fe^sub 2^O^sub 3^, and 53% TiO^sub 2^ is described. The mentioned parameters are shown to be connected with the particle size of the disperse phase of the film-forming solution, the degree of turbulence of its flow, and. supposedly, with the packing density of the solid particles in the film. It is shown that a correct choice of the regime for depositing the coating provides coatings of various thicknesses that possess maximum possible microhardness.[PUBLICATION ABSTRACT]