Refractory Ceramic Structure
Glass ceramics are made of small grains surrounded by a glassy phase and have properties in between those of glass and ceramics.
Refractory ceramic structure. New insulating and refractory mineral foam. The table below provides a summary of the main properties of ceramics and glass. However in cases where a refractory will come into contact with corrosive substances for example in glass melting furnaces a porous structure is undesirable. The benefits of precast refractory ceramic shapes are well known.
Because of their high heat resistance refractory concrete insulating refractory bricks and especially refractory ceramic fibre are the most frequently used materials for applications over 1200 c. Crystal structure in figures 2a through 2d representative crystal structures are shown that illustrate many of the unique features of ceramic materials. The ceramic material can then be made with a higher density incorporating smaller amounts of pores. Consistent and controlled manufacturing processes with faster turnaround than traditional cast in place monolithic refractories reduced labor over classic brick installations and if well designed simple repair assemblies.
Structure and mechanical properties. Refractories are also used to make crucibles and moulds for casting glass and metals and for surfacing flame deflector systems for rocket launch structures. Refractory materials are used in furnaces kilns incinerators and reactors.