Reaction Bonded SiC
II-VI’s SiC-based composites offer a broad range of solutions:
- Superior flatness capabilities – We are able to provide the semiconductor industry superior flatness capabilities that allow our customer’s tools to meet the decreasing dimensions required for the electrical circuits that power our lives.
- Size and shape flexibility – II-VI’s advanced forming techniques allow for the manufacture of large, complex shapes with minimal or no machining. Components measuring up to 60” x 60” and weighing 1000 lbs have been produced. Typical products include, but are not limited to, burner nozzles, conical diffusers, coal deflectors, jet mill liners, and burner elbows.
- Infiltration depth – Our reaction-bonding process can fully infiltrate components as thick as 6”, allowing a greater volume of wear material for harsh environments.
- Reduced weight – Silicon Carbide components will be significantly lighter than the carbide, ceramic, or metal parts they will be replacing, easing installation and reducing downtime.
II-VI is pleased to offer multiple core material options within the reaction-bonded ceramic family. Additionally, our well staffed R&D group have the ability to tailor compositions to meet the most demanding application needs. We have won several R&D awards over the years for our innovative products.
Flow-through channels – In addition to material technology, II-VI has expert process knowledge including the unique ability to create internal flow-through channels. This is ideal for air/vacuum distribution applications, as well as thermal management control in high heat applications such as high energy lasers, semi-conductor processes, or heat-exchangers.
|(Fine Grained SiSiC)||(Si/SiC+Al)||(Si/SiC + Ti)||(B4C/SiC/Si)|
|Young’s Modulus (GPa) [E]||350||380||410||330||330||390||400|
|CTE, 20-100ºC (ppm/K) [α]||2.9||2.9||2.7||3||4.4||3||4.8|
|Thermal Cond. (W/m-K) [k]||170||180||190||150||200||210||52|
|Ult. Tensile Strength (MPa)||N/A||N/A||N/A||N/A||N/A||N/A||N/A|
|Flexural Strength (MPa)||270||280||280||350||275||225||280|
|Fracture Toughness (Mpa-m1/2)||4||4||4||4||5||5||5|
|Damping Factor (% Zeta)||0.12|
|Specific Stiffness (E/ρ)||119||127||131||112||109||125||156|
|Thermal Stability (k/α)||59||62||70||50||45||70||11|