A glazing method for reducing glaze shrinkage defect on ceramic surface

Abstract

The invention discloses a glazing method for reducing glaze shrinkage defects on ceramic surfaces. The glazing method comprises the following steps: 1) mixing magnesia, aluminum oxide, chromium oxide,titanium oxide and ceramic blank raw materials, grinding, and carrying out slip casting to obtain ceramic blanks; 2) coating a slurry obtained by ball-milling molybdenum silicide, tantalum silicide,glass powder, silicon boride, ethanol and carboxymethyl cellulose on the surfaces of the ceramic blanks, drying and then carrying out heat treatment; 3) immersing the ceramic blanks into a nano iron oxide dispersion liquid, taking out the ceramic blanks, and irradiating the ceramic blanksby using an ultraviolet lamp; and 4) spraying a glaze on the surfaces of the ceramic blanks for glaze sintering. According to the invention, conventional ceramic blank raw materials and glaze are improved; the surfaces of the green bodies are treated, so that sintered glaze surfaces are uniform in corrugation,high in glossiness and good in thermal stability, meanwhile, the defects of wavy lines, cracks, pinholes, even deglazing and the like of the glaze surfaces can be well eliminated, the integrity of the glaze surfaces is improved, and the product quality is obviously improved.

Description

technical field

[0001] The invention belongs to the technical field of ceramic glazes, and in particular relates to a glazing method for reducing glaze shrinkage defects on the surface of ceramics. Background technique

[0002] Enamel, also known as ceramic glaze, is a colorless or colored glassy thin layer covering the surface of ceramic products. Glaze is one of the important contents of ancient Chinese porcelain identification. The essence of glaze is the continuous glass quality attached to the surface of the porcelain body. Some special glazes are the mixed layer of glass and crystal, which have similar physical and chemical properties to glass.

[0003] Due to the continuous improvement of people's living standards, the diversification of people's aesthetic concepts and individualized needs have become increasingly prominent, and the decorative diversification and artistic demands for ceramic products are also increasing. As a traditional Chinese ceramic industry, the...