[China Glass Network] CRYSTOE and NEOPARIES is also known as microcrystalline jade or ceramic glass. It is a comprehensive glass, a new type of building material that has just been developed in foreign countries. Its scientific name is glass crystal. Glass-ceramics and our common glass look very different. It has the dual characteristics of glass and ceramic. The atomic arrangement inside the ordinary glass is not regular, which is one of the reasons for the fragility of the glass. Microcrystalline glass, like ceramics, consists of crystals, that is, its atomic arrangement is regular. Therefore, glass-ceramics have higher brightness than ceramics and are stronger than glass.
A glass-ceramic decorative panel is a mixture of microcrystals and glass made by sintering and crystallization of suitable glass particles. Its texture is hard, dense and uniform, and it is polluted in the production process. The product itself has no radioactive pollution and is a new type of environmentally friendly green material.
The microcrystalline glass eye is a prosthetic eye made of cryolite special glass material produced in the German Rausa area. Its material is a functional glass-ceramic material, which is superior to ordinary glass, ceramic and natural stone. Ionic neutral inorganic material, very stable physical and chemical properties, does not release any harmful substances, wear and corrosion resistance, biocompatibility and biological activity is very good, the material shows extremely smooth, good wettability, does not cause allergic inflammatory reaction of human tissue, after More than 170 years of clinical use, fully validated, currently the world's better performance of the eye material. This Yiyan product was first introduced to China in July 2004 by Lausha Glass Yiyan and the Tongji Hospital Ophthalmology Hospital of Huazhong University of Science and Technology. In May 2005, it was officially put into the Chinese market.
The microstructure of the glass-ceramics is mainly determined by the composition and heat treatment process, and has great influence on the physical properties of the glass-ceramics such as mechanical strength, fracture toughness, light transmittance, and thermal shock resistance. The microstructure of glass-ceramics mainly includes dendritic structure, ultrafine particles, porous membrane, residual structure, building block structure, columnar interlocking structure, island structure, and flaky twin crystal.
The dendritic structure is caused by the accelerated growth of crystals in a certain lattice direction. The overall profile of the dendrites is similar to the usual crystal morphology, with a high proportion of residual glass phase remaining in the dendritic structure. The dendrites continuously penetrate in a three-dimensional direction to form a skeleton. Since hydrofluoric acid erodes lithium silicate faster than aluminosilicate glass, lithium silicate dendrites are easily nucleated by silver, and complex patterns can be transferred to the glass ceramics.
The grain size of the highly crystallized glass ceramics can be controlled within several tens of nanometers to obtain an ultrafine grain structure. In lithium aluminum silicon transparent glass ceramics, due to sufficient nuclear, a large amount of zirconium titanate crystal nucleus is formed in the base glass, and the β-quartz solid solution crystal phase is epitaxially grown on the crystal nucleus to form a uniform average grain size of about 60 nm. Fine particle structure. Since the grain size is much smaller than the visible light wavelength, and the birefringence of the β-quartz solid solution is low, the transmittance of the glass ceramic is high.
In many glass-ceramics, the residual glass phase can form a porous membrane structure. In the lithium aluminum silicon opaque glass-ceramic with β-spodumene solid solution as the main phase, the residual glass phase has higher SiO2 content and higher viscosity. Thus, the aluminum ion film network can be hindered. Therefore, lithium aluminum silicon glass ceramics have very good particle stability at high temperatures and can be used for a long time at a high temperature of 1200 °C.
Men'S Jacket,Men'S Vest,Men'S Pants,Mens Boardshorts Polyester
Hangzhou New Wave Trading , https://www.newwavecn.com