DOMADIA™ Ceramic Glass Sealing Expansion
DOMADIA™ Ceramic Glass Sealing Expansion
Superior Expansion Solutions for Ceramic-to-Metal Sealing
DOMADIA™ Ceramic Glass Sealing Expansion materials are engineered to offer precise thermal expansion compatibility for advanced sealing applications. When it comes to joining glass, ceramics, and metals, maintaining mechanical integrity and long-term reliability is essential—DOMADIA™ solutions rise to the challenge with consistent performance across demanding environments.
About the Product
DOMADIA™ Ceramic Glass Sealing Expansion materials are specialized metal alloys formulated to match the thermal expansion properties of glass and ceramic components. These materials are ideal for applications requiring airtight seals between dissimilar materials, particularly in high-temperature or vacuum environments.
With a refined balance of thermal expansion characteristics, mechanical strength, and chemical stability, DOMADIA™ alloys prevent seal failures due to stress, cracking, or thermal fatigue.
Key Features & Advantages
- Thermal Expansion Matching
Precisely engineered to match the Coefficient of Thermal Expansion (CTE) of various ceramics and glasses, ensuring structural integrity during temperature cycles.
- Excellent Sealing Capability
Facilitates strong hermetic bonds between metals and ceramics/glass, critical for vacuum and pressure-tight applications.
- High-Temperature Stability
Withstands extreme temperatures without compromising mechanical or chemical properties.
- Corrosion & Oxidation Resistance
Enhanced surface characteristics that resist degradation in harsh environments.
- Custom Alloy Options
Available in a variety of tailored compositions to meet specific glass and ceramic system requirements.
- Machinability & Sealing Ablility
Designed for ease of fabrication, forming, and joining in precision manufacturing environments.
Material Properties of DOMADIA™ Ceramic Glass Sealing Expansion Alloys
DOMADIA™ Ceramic Glass Sealing Expansion alloys are carefully engineered to deliver a balanced combination of mechanical and thermal properties essential for hermetic sealing performance:
| Property | Typical Range / Value |
| Coefficient of Thermal Expansion (CTE) | 4.6–7.5 × 10⁻⁶ /°C (20–300°C range) |
| Density | ~8.0–8.4 g/cm³ |
| Electrical Resistivity | ~0.5–0.6 μΩ·m at 20°C |
| Thermal Conductivity | 14–17 W/m·K |
| Melting Point | 1420–1450°C |
| Elastic Modulus | ~140–160 GPa |
| Tensile Strength (Annealed) | ~450–550 MPa |
| Magnetic Properties | Magnetic (can be controlled based on alloy type) |
| Corrosion Resistance | Good, especially with oxidation-resistant coatings |
| Oxidation Behavior | Compatible with glass-ceramic seal formation |
Note: The actual property values may vary based on the specific alloy composition and form (e.g., rod, wire, sheet). Custom specifications can be provided upon request.
Applications
- Vacuum Devices
Used in X-ray tubes, microwave components, and high-voltage insulators where glass-to-metal seals are critical.
- Aerospace & Defense
Suitable for avionics, sensor housing, and laser assemblies that require stable, leak-proof glass or ceramic seals.
- Medical Devices
Employed in implantable or diagnostic equipment where hermetic sealing and biocompatibility are essential.
- Electronics & Semiconductors
Ideal for hermetic packaging of sensitive electronic components, sensors, and feedthroughs.
Why Choose Domadia™?
At Domadia™, we combine metallurgical excellence, custom engineering, and decades of industry experience to offer precision sealing materials that meet global standards. Every product is backed by rigorous testing and personalized technical support. Our commitment to quality, innovation, and on-time delivery has made us a trusted partner to industries around the world.
Connect with Us
Looking to ensure long-term durability and optimal performance in your sealing applications? Let our experts guide you through the ideal material selection process for your specific needs. Whether it’s a standard solution or a custom-engineered alloy, we’re here to support your project from concept to completion.
Ready to Buy?
Speak to our team today to get a quote, technical datasheet, or place an order:
Frequently Asked Questions (FAQs)
Q1: What is the purpose of matching thermal expansion in glass sealing applications?
A1: It prevents thermal stress and cracking during temperature changes, ensuring long-term seal integrity.
Q2: Can DOMADIA™ Ceramic Glass Sealing materials be customized?
A2: Yes, we offer tailored compositions based on customer-specific glass or ceramic systems.
Q3: Are these materials suitable for high-vacuum environments?
A3: Absolutely. They are engineered for vacuum-tight sealing, even in extreme conditions.
Q4: What form factors are available?
A4: Our alloys are available in sheets, rods, wires, and machined components.
Q5: Do you offer technical assistance for seal design?
A5: Yes, our engineers provide design support and material selection guidance for optimized performance.
Q6: How do I know which expansion alloy I need?
A6: Contact us with your application parameters—we’ll help match the right material to your CTE requirements.
Q7: What industries most commonly use these materials?
A7: Electronics, medical devices, aerospace, and vacuum technologies.
Q8: Are DOMADIA™ materials RoHS compliant?
A8: Yes, all our products meet international compliance standards.
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