CUMI Krysta – High Purity Silicon Carbide (HPSiC)
CUMI Krysta High Purity Silicon Carbide is a premium material engineered to meet the stringent demands of the semiconductor and advanced technical ceramics industries. Manufactured under strict quality controls and refined through proprietary purification processes, Krysta HPSiC offers exceptional chemical purity, high thermal conductivity, low thermal expansion, and excellent mechanical strength. These attributes make it an ideal material for high-performance applications where purity and consistency are paramount.
To cater to various performance requirements, Krysta HPSiC is offered in three distinct purity grades—3N, 4N, and 5N, where "N" denotes the number of nines in purity percentage. Each grade is tailored for specific end-use cases, offering increasing levels of purity to suit different performance and contamination control needs.
3N HPSiC – High Purity Grade
Applications:
Technical Ceramics:
Used in components such as kiln furniture, burners, nozzles, wear-resistant parts, and seals where mechanical strength, wear resistance, and thermal shock resistance are essential.
Semiconductors:
Suitable for semiconductor processes such as wafer handling, etching trays, or structural supports in clean environments.
Benefits:
- High thermal conductivity improves heat dissipation.
- Chemically inert, resistant to most acids and alkalis.
- Excellent mechanical strength and wear resistance.
Industries Served: Electronics, Aerospace, Automotive, Industrial equipment
4N HPSiC – Enhanced Purity Grade
The 4N HPSiC grade offers enhanced purity providing better control of trace metallic and non-metallic contaminants. It is specially formulated for demanding semiconductor applications and high-end technical ceramics that require reduced impurity levels to maintain product performance and reliability.
Applications:
Advanced Semiconductors:
Used in applications where contamination can affect wafer quality, device yield, and overall reliability. Examples include crucibles for crystal growth, components in epitaxial reactors, and parts in diffusion or oxidation furnaces.
High-End Technical Ceramics:
Applied in precision ceramic components used in optical systems, plasma-facing parts, and specialty wear components with tighter tolerance requirements.
Benefits:
- Improved chemical stability and reduced contamination risks in cleanroom environments.
- Maintains performance under high temperatures and corrosive environments.
- Supports more demanding tolerance levels and consistency across batches.
- Enhances the service life of components in harsh operational conditions.
Industries Served: Semiconductor manufacturing, Photonics, Energy (e.g., fuel cells), Precision instrumentation
5N HPSiC – Ultra-High Purity Grade
The 5N HPSiC is the ultra high purity grade. It is engineered for mission-critical semiconductor and extreme-performance ceramic applications where even trace levels of impurities can disrupt processes or degrade end-product performance. This ultra-high purity grade is achieved through state-of-the-art refining and quality assurance processes to meet the most rigorous global standards.
Applications:
Semiconductor Fabrication:
Extensively used in single crystal growth (e.g., SiC or GaN wafers), ion implantation, atomic layer deposition (ALD), and chemical vapor deposition (CVD) systems.
Critical Ceramics for Extreme Conditions:
Used in nuclear-grade ceramics, aerospace propulsion components, and high-energy physics instruments where thermal, chemical, and structural integrity under extreme conditions is essential.
Benefits:
- Minimizes ionic contamination, enabling higher yields in semiconductor processes.
- Highest resistance to thermal and chemical degradation.
- Ensures ultra-low outgassing and no unintended dopant migration.
- Supports highly reproducible results in sensitive environments.
Industries Served: Semiconductors (front-end processing, wafer manufacturing), Aerospace and defense, Nuclear and high-energy research. Advanced optics and photonics
CUMI's Manufacturing Excellence
CUMI (Carborundum Universal Ltd.) leverages decades of expertise in electro minerals and ceramic materials to deliver consistent, high-purity silicon carbide that meets international standards.