What is Flash Sintering?
Flash sintering is a field-assisted sintering technique in which an electric field applied to a ceramic or functional material triggers rapid, near-instantaneous densification at lower furnace temperatures than conventional sintering. Combined with spark plasma sintering (SPS/FAST) and induction heating, it enables processing of materials that are difficult to densify by conventional methods.
SPS, Induction and Flash Sintering in One System
Three Energy Sources. One Sintering Platform.
At the core of U-FAST FLASH is the integration of three complementary heating technologies, which can operate independently or in combination within a single process.
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How the three technologies compare?
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01
SPS / FAST Pulses
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02
Induction Heating
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Flash Sintering
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| Heating mechanism | High-current pulsed DC flowing through tooling and sample (Joule heating) | Electromagnetic induction heating of the tooling / susceptor | Electric field applied to the material triggers rapid electrical activation |
| Main advantage | Rapid volumetric heating, densification at lower temperatures | Fast, uniform temperature distribution and reduced thermal gradients | Near-instantaneous densification at reduced furnace temperatures |
| Typical use | Metals, carbides, composites, conductive materials | Preheating, thermal homogenization, extended process windows | Advanced and functional ceramics difficult to densify conventionally |
| In U-FAST FLASH | Up to 5,000 A, programmable pulses | Up to 18 kW, interchangeable coils | Dedicated flash power supply (450 V / 650 V / 850 V, 10 A) |
How the three technologies compare?
SPS / FAST Pulses
High-current pulsed DC flowing through tooling and sample (Joule heating)
Rapid volumetric heating, densification at lower temperatures
Metals, carbides, composites, conductive materials
Up to 5,000 A, programmable pulses
Induction Heating
Electromagnetic induction heating of the tooling / susceptor
Fast, uniform temperature distribution and reduced thermal gradients
Preheating, thermal homogenization, extended process windows
Up to 18 kW, interchangeable coils
Flash Sintering
Electric field applied to the material triggers rapid electrical activation
Near-instantaneous densification at reduced furnace temperatures
Advanced and functional ceramics difficult to densify conventionally
Dedicated flash power supply (450 V / 650 V / 850 V, 10 A)
U-FAST FLASH Technical Specifications
The table below presents the technical specifications of the U-FAST FLASH flash sintering system and its 450, 650 and 850 configurations:
 U-FAST FLASH BASE
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U-FAST FLASH 450
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U-FAST FLASH 650
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U-FAST FLASH Ultra 850
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|---|---|---|---|
| Max Sintered Diameter Ø 40 mm |
Max Sintered Diameter Ø 40 mm |
Max Sintered Diameter Ø 40 mm |
Max Sintered Diameter Ø 50 mm |
| Press Punch Diameter 68 mm |
Press Punch Diameter 68 mm |
Press Punch Diameter 68 mm |
Press Punch Diameter 68 mm |
| SPS pulses | SPS pulses or Induction Heating | SPS pulses or Induction Heating | HYBRID SPS Pulses + Induction Heating |
| Max Current* 5 000 A |
Max Current* 5 000 A |
Max Current* 5 000 A |
Max Current* 5 000 A |
| Rotary pump + Turbomolecular pump 9×10-5mbar |
Rotary pump + Turbomolecular pump 9×10-5mbar |
Rotary pump + Turbomolecular pump 9×10-5mbar |
Rotary pump + Turbomolecular pump 9×10-5mbar |
| Flash connections ready | Power supply for Flash Sintering 450V / 10A |
Power supply for Flash Sintering 650V / 10A |
Power supply for Flash Sintering 850V / 10A |
* Max Current – The final value of the current is related to the value of the on-site connection voltage , so it can vary accordingly.
Advanced Control of Energy Delivery
Unlike conventional sintering systems, U‑FAST Flash enables precise control of how energy is delivered to the material.
- controlled energy input,
- shorter process cycles,
- improved process stability,
- access to non-equilibrium material states,
- improved management of thermal runaway phenomena
Applications
- Advanced ceramics
- Functional ceramics
- Composite materials
- Energy materials
- Electronic materials
- Non-equilibrium material systems
Typical Users
- Advanced materials research institutes
- Universities and scientific laboratories
- Ceramic manufacturers
- Composite material developers
- Aerospace and defence organizations
- Energy and electronics companies
Key Benefits of the U-FAST FLASH Sintering System
Three Independent Energy Sources
SPS, induction heating, and flash sintering in one platform.
Faster Processing
Achieve heating rates of up to 500°C/min, significantly reducing process times and increasing laboratory productivity.
High Process Flexibility
Adapt energy input strategies to specific material characteristics and application requirements.
Extended Material Range
From metals to ceramics and functional materials.
Increased Chamber Capacity
Enhanced chamber design provides greater flexibility for tooling configurations and experimental setups.
High Vacuum Processing
Vacuum level of 9×10⁻⁵ mbar (rotary + turbomolecular pump) supports high-purity material processing and contamination-free operation.
Precise Process Control
Fully programmable process parameters ensure repeatability and reliable experimental results.
Modular Architecture
The modular architecture allows future expansion and integration of additional capabilities as project requirements evolve.
Coil Configurations
Coils are mounted on a quick-change feedthrough and treated as application-specific tooling rather than a fixed part of the chamber. Replacing a coil requires no modification to the power supply, the press axis or the vacuum system.
Open C-profile coil – unobstructed radial access to the die and the temperature measurement path.
Clamped coil with bolted feedthrough – closer coupling to the tooling for improved radial uniformity.
The system operates in three configurations:
- ✓Standard coil installed – the coil supplied with the device, matched to the primary die diameter. Induction delivers the outer heat flux while SPS/FAST pulses drive densification within the powder column.
- ✓Alternative coil geometry – fitted when die diameter, sample aspect ratio or the required axial temperature profile changes. Open geometries keep the die and the measurement path accessible; clamped geometries couple more tightly to the tooling and reduce radial gradients.
- ✓No coil installed – the induction path can be removed entirely and the system runs on SPS/FAST pulses and flash sintering alone. This is the preferred configuration for electrically conductive powders, small-diameter tooling and reference runs where induction offers no advantage.
Coil sets are delivered with the system, and custom geometries can be manufactured for non-standard tooling or dedicated process windows.
Spark Plasma Sintering (SPS/FAST) Capabilities
Based on GeniCore’s proven U-FAST technology, the system utilizes precisely controlled pulsed direct current for efficient material consolidation. Key spark plasma sintering capabilities include:
- Current up to 5,000 A
- Programmable pulse duration
- Adjustable pulse packages
- Precise energy delivery control
- Exceptional process repeatability
This enables highly efficient heating directly within the tooling and sample assembly, resulting in lower processing temperatures, shorter sintering cycles, and improved material properties.
High-Power Induction Module
The integrated induction heating module delivers up to 18 kW of power, significantly expanding the process capabilities. Benefits include:
- Rapid temperature ramping
- Improved thermal uniformity
- Reduced thermal gradients
- Enhanced process stability
- Increased heating efficiency
- Greater process flexibility
The induction module can be configured for a variety of applications, making it a powerful tool for advanced material development.
Interchangeable Induction Coil System
One Platform. Multiple Configurations.
The induction module features interchangeable coils designed to accommodate a wide range of processing requirements and sample geometries.
By selecting the appropriate coil configuration, users can optimize magnetic field distribution, heating efficiency, and temperature uniformity for specific applications. This flexibility enables the system to support both standard sintering operations and highly specialized research processes.
Benefits:
- Optimized heating for different sample sizes
- Flexible process development
- Improved temperature uniformity
- Adaptation to specific sintering configurations
Engineered for Process Flexibility
Unlike conventional systems with fixed heating configurations, U-FAST FLASH offers full flexibility in configuring the thermal environment. Users can adapt the induction setup and combine energy sources according to specific process requirements, significantly expanding the operational window of the system and supporting the development of advanced sintering strategies.
Scalable Technology Platform
The modular architecture of the U-FAST family allows users to expand system capabilities as their projects evolve.
Technologies implemented within U-FAST FLASH are fully compatible with the broader U-FAST ecosystem, providing a seamless transition from laboratory-scale process development to pilot and industrial-scale production platforms.
Service and Support
GeniCore provides comprehensive support throughout the entire lifecycle of the equipment. Services include:
- Installation and commissioning
- Operator training
- Process consultation
- Technical support
- Preventive maintenance
- Spare parts availability
- Long-term service agreements
Our team of specialists works closely with customers to ensure successful implementation and maximum performance of the U-FAST FLASH platform.
Unlock New Possibilities in Sintering
U-FAST FLASH expands the boundaries of field-assisted sintering by combining three complementary energy sources within a single platform.
From advanced ceramics and functional materials to next-generation manufacturing technologies, the system provides the flexibility, performance, and control required to accelerate material development.
Ready to accelerate your materials research? Contact our specialists to request a quote, schedule a demonstration, or discuss your application requirements.
Frequently Asked Questions about U‑FAST Flash Platform
Why U-FAST FLASH?
What is the difference between spark plasma sintering and flash sintering?
What heating rates can U-FAST FLASH achieve?
What materials can be processed with U-FAST FLASH?
Can the three heating technologies be used in one process?
What is the maximum current and induction power of the system?
Is U-FAST FLASH suitable for industrial production or only for research?
Does the system support high vacuum processing?
What sample sizes does U-FAST FLASH support?
What support does GeniCore provide with the system?
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