3M Nextel™ 720 Composite Ceramic Fiber

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3M Nextel™ 720 Composite Ceramic Fiber
Categories:	Ceramic; Oxide; Aluminum Oxide; Silicon Oxide; Other Engineering Material; Composite Fibers
Material Notes:	Chemical composition above is wt%. Filament diameter is 10-12 µm. 3M Nextel Ceramic Fibers 610, 650, and 720 are composite grade fibers. They have a refined crystal structure based on alpha-Al₂O₃ and do not contain glassy phases. This allows the fibers to retain their strength at high temperatures. 3M Nextel Fiber 720, an alpha-Al₂O₃ with SiO₂ addition (forming alpha-Al₂O₃/mullite), has improved strength retention at temperature due to reduced grain boundary sliding. The SiO₂ addition also help to 'pin' the grains and reduce grain growth when exposed to thermal aging. Information provided by 3M Ceramic Textile and Composites.
Key Words:	Alumina, Aluminum Oxide
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Available Properties
Density Particle Size, Crystal size Specific Surface Area Tensile Strength, Ultimate, gauge filament Tensile Modulus, Filament property CTE, linear Melting Point Refractive Index

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