California Nanotechnologies (Cal Nano) supports advanced reactor developers, defense programs, and energy innovators with domestically manufactured nuclear-grade materials and components. We provide U.S.-based manufacturing designed to transition advanced materials from early-stage development through production-scale supply.
Our capabilities span rapid prototyping to multi-ton annual volumes, supported by secure domestic supply chain infrastructure and advanced densification through Spark Plasma Sintering (FAST/SPS) technology.
• U.S.-based manufacturing
• Rapid prototyping to production scale
• Secure domestic supply chain capability
• Advanced densification via SPS/FAST technology
Cal Nano manufactures high-density boron carbide components engineered for neutron absorption, shielding, and structural nuclear applications.
Applications include:
• Control rod pellets
• Absorber rings
• Fixed absorber coins
• Shielding tiles
• Custom absorber geometries
Capabilities include:
• ASTM C750 / C751 compliant chemistries
• Enriched B₄C available
• Density range from approximately 70% to 98% theoretical (application-specific)
• Spark Plasma Sintering and pressure-assisted densification
• Near-net shape manufacturing
• Post-sinter machining and finishing
• Small-batch to production volumes
Our powder processing and densification expertise enables tailored density, microstructure, and geometry control to meet specific reactor performance requirements.
Cal Nano manufactures high-performance ceramic materials engineered for extreme operating environments found in advanced reactor systems.
Materials include:
• Silicon Carbide (SiC)
• Alumina (Al₂O₃)
• Zirconia (ZrO₂)
• Composite ceramic systems
• Multi-layer and diffusion-bonded structures
Typical applications include:
• High-temperature reactor components
• Radiation-tolerant structural elements
• Oxidation-resistant systems
• Shielding assemblies
• Structural ceramic components
Our Spark Plasma Sintering platform enables controlled densification, refined grain structures, and reduced processing times, resulting in durable, high-performance ceramic components.
Cal Nano supports advanced nuclear and defense programs with refractory and specialty alloy processing designed for extreme service conditions.
Materials and systems include:
• Molybdenum-based alloys
• Tungsten-based systems
• Refractory composites
• Metal-ceramic composites (MMCs)
• SPS-bonded and diffusion-bonded assemblies
These materials are engineered for high-temperature stability, thermal resistance, and demanding reactor and defense environments.
Cal Nano is structured to support next-generation reactor programs requiring secure domestic manufacturing and responsive production capability.
Why Cal Nano:
• U.S.-based production in California
• In-house powder processing and cryogenic attrition milling
• Large-format Spark Plasma Sintering systems
• Rapid design iteration capability
• Transition support from R&D to repeatable production
• Secure handling of sensitive and proprietary projects
Our quality systems are aligned with nuclear customer requirements, with a roadmap toward enhanced nuclear quality program frameworks as customer needs evolve.
We support prototype builds, pilot production programs, and multi-ton annual material supply.
Infrastructure includes:
• Large-capacity SPS systems
• High-energy cryogenic milling
• Graphite tooling development
• Precision machining partnerships
• Flexible batch sizing
Our objective is to move advanced nuclear materials from concept validation to stable, repeatable manufacturing without compromising performance integrity.
Cal Nano supports programs across:
• Small Modular Reactors (SMRs)
• Microreactors
• Advanced gas-cooled reactors
• Molten salt reactor systems
• Defense nuclear programs
• Space nuclear systems
We work with reactor developers, defense primes, and energy integrators seeking dependable U.S.-based materials manufacturing capability.
Cal Nano provides secure, U.S.-based manufacturing of advanced nuclear materials and components for next-generation reactor programs.
To discuss your reactor materials requirements, contact our Nuclear Programs Team.