During high temperature sintering and heat treatment, BN ceramic setter plates support workpieces inside the furnace. Their design must account for workpiece weight, temperature changes, and furnace loading conditions. For large ceramic substrates, thin components, or multi-layer loading configurations, plate thickness, flatness, and support span should be evaluated according to the actual operating conditions to ensure adequate support during processing.
INNOVACERA offers BN setter plates in various dimensions, thicknesses and configurations to meet different equipment designs and workpiece requirements. Machining options include grinding, precision machining, and other mechanical processes. Drawing-specific requirements, such as flatness, parallelism, surface roughness, hole locations, grooves, notches, and stepped features, can be evaluated according to the application.
Product Features
- BN-99.7 High-Purity Material
- Low Thermal Expansion and Good Thermal Shock Resistance
- Low-Wetting Surface Characteristics
- Machinability and Custom Configurations
Available Designs & Custom Machining
- Flat BN Setter Plates
- Raised-Edge / Recessed BN Setter Plates
- BN Setter Plates with Holes and Grooves
- Stepped BN Setter Plates & Custom Profile
Applications
1. High Temperature Ceramic Sintering
BN setter plates provide support for ceramic components during high temperature sintering.
2. Ceramic Substrate Sintering
Suitable for evaluating in AlN and Si3N4 ceramic substrate sintering processes. Plate dimensions, thickness, and support configuration can be selected according to substrate size and firing conditions.
3. High-Temperature Furnace Support and Positioning
BN plates can be customized for workpiece support and positioning in industrial furnaces. Different designs are available for edge support, multi-point support, and multi-layer loading configurations.
4. Advanced Materials Processing and Heat Treatment
BN setter plates can be considered for high-temperature processing of transparent ceramics and other advanced materials. Material compatibility should be verified under the intended operating conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product | Boron Nitride Setter Plate |
| Material | Hexagonal Boron Nitride (HBN) |
| Material Grade | BN-99.7 |
| BN Content | ≥99.7% |
| Color | White |
| Bulk Density | 1.6 |
| Flexural Strength | 18 MPa |
| Thermal Expansion Coefficient (20~1000°C) | Approx. 1.5 × 10⁻⁶ K |
| Reference Maximum Temperature in Inert Atmosphere | Approx. 2100°C |
| Reference Maximum Temperature in Vacuum | Approx. 1900°C |
| Largest Setter Plate Size in Historical Product Records | 500 × 500 mm |
| Thickness and Flatness | To be evaluated based on drawings and operating conditions |
| Available Configurations | Flat plates, raised edges, holes, grooves, steps, chamfers and custom profiles |
Need Custom Boron Nitride Setter Plates?
Send INNOVACERA your drawings, required dimensions, quantity and operating conditions, including furnace temperature, atmosphere and loading weight. We'll check the material and machining requirements and prepare a quote.
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Frequently Asked Questions
Why Use Boron Nitride Setter Plates for AlN and Si3N4 Sintering? How Do They Prevent Chemical Sticking?
During high-temperature sintering of AlN and Si3N4 ceramic substrates up to 1900°C in vacuum or 2100°C in inert atmospheres, liquid-phase sintering additives easily react and bond with conventional oxide kiln furniture. INNOVACERA’s BN-99.7 high-purity hexagonal boron nitride setter plates provide complete chemical inertness and natural non-wetting lubricity. With an ultra-low coefficient of thermal expansion (approx. 1.5 x 10^-6 /K) and superior thermal shock resistance, they eliminate diffusion sticking, prevent substrate warping, and allow frictionless shrinkage without surface contamination.
Need Multi-Layer Loading Configurations or Relief Grooves? Where Can You Buy Custom BN Setter Plates?
You can buy custom-machined hexagonal boron nitride setter plates directly from INNOVACERA in standard flat configurations or large master dimensions up to 500 x 500 mm. We offer full CNC precision machining for gas-venting holes, thermal-expansion grooves, raised edges, and nesting steps tailored to edge-supported or multi-point loading furnaces. Simply submit your firing temperature curves, substrate dimensions, and atmosphere requirements to receive engineering design support and volume pricing.
