English
Русский Development and research of formulations for the production of functional ceramic materials
Abstract
The authors investigated a mixture for producing Ceram Bond ceramic adhesive (Bredent, Germany). The microstructure of the initial powder and the resulting coating after sintering at 980°C were analyzed. The resulting compositions are easily manipulated under industrial conditions and possess optimal processing properties.
Objectives: Research and development of new, effective functional ceramic coating compositions for dental prosthetics that meet high quality and durability requirements.
Methods. Analytical and experimental chemistry methods were used, as well as modern instruments and equipment. The chemical and phase composition was studied using an X-ray fluorescence spectrometer. The elemental composition of the experimental samples was determined using an energy dispersive attachment to a scanning electron microscope. The granulometric composition of the masses was determined using laser diffractometry. The microstructure of the powder and ceramic adhesive was examined using a scanning electron microscope. The structure of the coatings was recorded using an optical microscope. The preparation of the ceramic adhesive was carried out by wet grinding. The determination of water absorption, open porosity and apparent density was carried out using a vacuum chamber connected to a vacuum pump. The calculation of these parameters was carried out according to classical formulas.
Results. The analysis of the main physico-mechanical characteristics of a sample of a mixture in a paste-like state of the Ceram Bond brand, the Bredent trademark (Germany) is carried out. The compositions of experimental samples have been developed, their physico-mechanical properties have been determined, and the advantages and disadvantages of introducing flat glass and fused quartz into the combat have been identified. It has been established that coatings based on Ceram Bond adhesive are characterized by the presence of a large number of microcracks, and experimental formulations differ in a small number or completely absence of microcracks, which indicates its higher quality.
Conclusions. As a result of the work carried out, a mixture for the production of ceramic adhesive of the Ceram Bond brand of the Bredent trademark (Germany) was investigated. Experimental formulations have been developed for the production of ceramic adhesives based on fused quartz and tempered flat glass. The microstructure of the initial powder and the coating based on it after sintering at a temperature of 980℃ has been studied. It has been established that coatings based on Ceram Bond adhesive are characterized by the presence of a large number of microcracks, and the developed formulations differ in a small number or complete absence of microcracks, which indicates their higher quality.
Objectives: Research and development of new, effective functional ceramic coating compositions for dental prosthetics that meet high quality and durability requirements.
Methods. Analytical and experimental chemistry methods were used, as well as modern instruments and equipment. The chemical and phase composition was studied using an X-ray fluorescence spectrometer. The elemental composition of the experimental samples was determined using an energy dispersive attachment to a scanning electron microscope. The granulometric composition of the masses was determined using laser diffractometry. The microstructure of the powder and ceramic adhesive was examined using a scanning electron microscope. The structure of the coatings was recorded using an optical microscope. The preparation of the ceramic adhesive was carried out by wet grinding. The determination of water absorption, open porosity and apparent density was carried out using a vacuum chamber connected to a vacuum pump. The calculation of these parameters was carried out according to classical formulas.
Results. The analysis of the main physico-mechanical characteristics of a sample of a mixture in a paste-like state of the Ceram Bond brand, the Bredent trademark (Germany) is carried out. The compositions of experimental samples have been developed, their physico-mechanical properties have been determined, and the advantages and disadvantages of introducing flat glass and fused quartz into the combat have been identified. It has been established that coatings based on Ceram Bond adhesive are characterized by the presence of a large number of microcracks, and experimental formulations differ in a small number or completely absence of microcracks, which indicates its higher quality.
Conclusions. As a result of the work carried out, a mixture for the production of ceramic adhesive of the Ceram Bond brand of the Bredent trademark (Germany) was investigated. Experimental formulations have been developed for the production of ceramic adhesives based on fused quartz and tempered flat glass. The microstructure of the initial powder and the coating based on it after sintering at a temperature of 980℃ has been studied. It has been established that coatings based on Ceram Bond adhesive are characterized by the presence of a large number of microcracks, and the developed formulations differ in a small number or complete absence of microcracks, which indicates their higher quality.