Aladdin ultra-high temperature ceramic fiber board (service temperature range: 1600–1900°C) is a rigid board product manufactured by mixing ceramic fibers and polycrystalline alumina materials in precise proportions, followed by vacuum forming, drying and precision finishing processes.
The addition of polycrystalline alumina fibers enables this high-temperature ceramic fiber board to break through the temperature limit of conventional amorphous materials (upgraded from 1400°C to 1900°C), while its mechanical properties are greatly enhanced.
Restrain crystalline phase transformation: Ordinary Al₂O₃-SiO₂ fibers precipitate mullite (3Al₂O₃·2SiO₂) above 1200°C, which causes shrinkage. PCAF (pure α-Al₂O₃) features no phase transition and maintains long-term thermal stability.
Creep resistance: The corundum crystal structure of polycrystalline alumina retains high mechanical strength even at 1600°C, preventing the fiber board from collapsing under extreme heat.
Flexural strength: Incorporating a specific proportion of polycrystalline fibers raises the flexural strength of the fiber board by more than 50%.
Thermal shock resistance: The high elastic modulus of polycrystalline alumina restrains the propagation of cracks induced by thermal stress.
Corrosion resistance: α-Al₂O₃ delivers better resistance to acids and alkalis (except hydrofluoric acid) compared with silicate fibers.
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