1. Estrutura do material e características estruturais
1.1 Contido de alúmina e evolución da fase cristalina
( Ladrillos de revestimento de alúmina)
Alumina lining blocks are thick, crafted refractory ceramics mainly composed of aluminum oxide (Al two O SIX), with content typically varying from 50% a máis 99%, directly influencing their efficiency in high-temperature applications.
The mechanical strength, resistencia á corrosión, and refractoriness of these bricks enhance with higher alumina focus as a result of the advancement of a durable microstructure dominated by the thermodynamically secure α-alumina (diamond) etapa.
During manufacturing, precursor products such as calcined bauxite, integrated alumina, or artificial alumina hydrate go through high-temperature shooting (1400 °C– 1700 °C), advertising stage transformation from transitional alumina kinds (c, d) to α-Al Two O THREE, which displays phenomenal solidity (9 on the Mohs range) and melting factor (2054 °C).
The resulting polycrystalline structure contains interlocking corundum grains embedded in a siliceous or aluminosilicate glassy matrix, the make-up and quantity of which are thoroughly regulated to balance thermal shock resistance and chemical toughness.
Small ingredients such as silica (SiO₂), titania (TiO₂), or zirconia (ZrO₂) may be introduced to change sintering habits, boost densification, or enhance resistance to certain slags and fluxes.
1.2 Microstructure, Porosidade, and Mechanical Integrity
The efficiency of alumina lining blocks is seriously dependent on their microstructure, especially grain size distribution, pore morphology, and bonding phase attributes.
Optimum bricks display great, consistently distributed pores (closed porosity chosen) and very little open porosity (
Alumina Technology Co., Ltd foco na investigación e desenvolvemento, produción e venda de po de óxido de aluminio, produtos de óxido de aluminio, crisol de óxido de aluminio, etc., atendendo á electrónica, cerámica, industrias químicas e outras. Dende a súa constitución en 2005, a empresa comprometeuse a ofrecer aos clientes os mellores produtos e servizos. Se buscas alta calidade alúmina al2o3, póñase en contacto connosco.
Etiquetas: Ladrillos de revestimento de alúmina, alúmina, óxido de alúmina
Todos os artigos e imaxes son de Internet. Se hai algún problema de copyright, póñase en contacto connosco a tempo para eliminar.
Consultanos