Sinter-optimized α-Al₂O₃ feedstock for direct-bonded copper substrates, densified at lower firing energy.
DBC substrate makers need alumina that reaches high sintered density with a controlled microstructure for reliable copper bonding and thermal cycling, without pushing furnace energy and cost. Commodity alumina varies batch to batch in particle distribution and sinters inconsistently, forcing conservative firing schedules and yielding microstructures that limit bond reliability under power cycling.
Strocera supplies sinter-active submicron α-Al₂O₃ that reaches 98.05% of theoretical density by pressureless sintering in air at 1550 °C, with no sintering additive. A narrow submicron distribution (D50 1.34 µm, D10 0.49 µm (490 nm)) yields a fine, uniform microstructure for consistent copper bonding and thermal-cycling performance. Validated to ASTM C20 and C1327 mechanical standards, the powder is supplied as a feedstock for partner DBC lines so substrate makers densify reliably at lower energy. This is delivered through a partner manufacturing route.
Full Alpha Alumina Powder specProduction-qualified alumina chemistry, supplied via a partner DBC manufacturing route. ASTM C20 / C1327 validated.
DBC/AMB substrate manufacturers sourcing a sinter-optimized alumina feedstock for power modules.
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Tell us the operating conditions. We'll formulate Alpha Alumina Powder to your application, and ship powder matched to your sintering schedule.
