Alumina Ceramic Plate is a special ceramic material with high-purity α-alumina (Al₂O₃) as the main crystal phase, and its content is usually between 90% and 99.9%. Compared with ordinary ceramics or metal substrates, this product can maintain structural integrity and functional stability in extremely high temperature, strong corrosion and high wear environments due to the inherent high melting point (>2050°C), ultra-high hardness and excellent chemical inertness of alumina. Its volume resistivity exceeds 10¹⁴ Ω·cm, and its dielectric strength is >10 kV/mm, which is significantly better than organic insulating materials and is suitable for high-voltage and high-frequency electronic environments. Compared with some low-purity ceramics in the same category, alumina ceramic plates have significantly improved mechanical strength (bending strength can reach 300-400 MPa) and thermal conductivity (about 20-30 W/m·K) while maintaining excellent insulation by finely controlling the grain size and sintering process, thereby forming a differentiated advantage in heat dissipation efficiency and thermal shock resistance. Typical applications include semiconductor equipment, high temperature furnace linings, insulation supports and wear-resistant mechanical parts.
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