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Sintered Silicon Carbide
No secondary bonding phase, no weak point for acids or alkalis to attack — SiC grains fuse directly to one another at high temperatures, making sintered SiC extremely chemically and wear resistant.
The Mechanism
How the Sintered Bond Forms
Sub-micron SiC powder is blended with non-oxide sintering aids (typically boron and carbon), pressed into a green shape, and fired above 2,000°C in an inert atmosphere. At that temperature, atoms diffuse across grain boundaries and the grains themselves fuse together and densify. This solid-state process, unlike reaction bonding's liquid-silicon infiltration or nitride bonding's gas-phase reaction.
Because there's no secondary phase to physically or chemically attack, sintered SiC resists abrasion and attack from acids and alkalis better than almost any other technical ceramic, including bond types where the bonding material itself becomes the weak point.
Why Abrasion & Corrosion Resistance Is Best-in-Class
No bonding phase means no preferential attack point for aggressive chemicals; the entire structure is uniformly SiC.
Why It Handles the Highest Temperatures
Without a free-silicon or nitride phase to soften first, the ceramic's performance ceiling is set by SiC itself rather than a secondary material; the reason SSIC's max use temperature (1,600°C) exceeds both NBSiC and RBSiC.
Why SCP Sources This Grade
Achieving full densification via solid-state diffusion alone generally requires more precise powder processing and higher firing temperatures than infiltration-based methods — why sintered SiC is sourced through a specialized partner rather than produced in-house.
Material Properties
Sintered SiC at a Glance
Max Use Temp
2,912°F (1,600°C)
chemical resistance
Excellent
Abrasion Resistance
Outstanding
Sourcing
Vetted Partner Network
SCProbond™ Sintered Grade
SCProbond™ SSIC
Aggressive Chemical Exposure & Molten Metal Handling
Extremely high corrosion resistance in acidic and basic media, even at high temperature, with outstanding thermal shock resistance.