Overview
Glass electrodeposited ceramic is an advanced composite material fabricated by electrodepositing ceramic particles onto a glass matrix. This process creates a uniform, dense structure that inherits the best properties of both components: the transparency or translucency of glass and the hardness/thermal resistance of ceramics. Developed for high-performance industrial applications, it bridges the gap between traditional ceramics and glass materials. Unlike conventional sintering methods, electrodeposition allows precise control over layer thickness and composition, enabling tailored properties for specific uses. The material is often customized for industries requiring stringent tolerances, such as semiconductor manufacturing or aerospace engineering.
Physical and Chemical Properties
The material exhibits a unique combination of low thermal expansion (similar to ceramics) and optical clarity (from glass), with typical coefficients of thermal expansion (CTE) ranging from 4-8 x 10⁻⁶/°C. Its dielectric strength exceeds 10 kV/mm, making it ideal for electrical insulation. Mechanical properties include a Vickers hardness of 600-800 HV and flexural strength of 100-150 MPa. Chemically, it resists most acids and alkalis except hydrofluoric acid and concentrated phosphoric acid. The surface is non-porous, preventing microbial growth—a critical feature for medical applications. Some formulations incorporate dopants like alumina or zirconia to enhance specific characteristics such as wear resistance or UV stability.
Main Applications
In electronics, glass electrodeposited ceramic serves as substrates for high-frequency circuits, LED packaging, and hermetic seals for sensors due to its matched CTE with silicon. Aerospace applications include radome windows and thermal protection systems where transparency to RF signals and heat resistance are paramount. The medical industry uses it for dental implants and surgical tool coatings, leveraging its biocompatibility. Industrial uses encompass wear-resistant linings for pumps and valves. Emerging applications include energy storage (battery separators) and photonic devices, where its tunable optical properties are advantageous.
Safety and Storage
While non-hazardous in solid form, machining generates fine ceramic-glass dust that may irritate respiratory systems. NIOSH-approved N95 masks and local exhaust ventilation are recommended during processing. Intact components pose no chemical risks under normal conditions. Storage requires protection from impact to prevent microcracks. Pallets should be kept in low-humidity areas (<60% RH) to avoid potential hydrolysis of surface layers. For long-term storage, anti-static packaging is advised to minimize dust adhesion. Shelf life is effectively indefinite if stored properly.
B2B Procurement Guide
Specify key parameters: CTE range, dielectric constant (typically 6-10 at 1 MHz), and optical transmission wavelengths if applicable. For bulk orders, request batch testing reports including Weibull modulus for strength consistency. Leading manufacturers are in Germany, Japan, and the U.S., with minimum order quantities often starting at 100 kg. Consider lead times (8-12 weeks common for custom formulations) and negotiate pricing tiers for annual contracts. Secondary processing (e.g., laser cutting) may require supplier collaboration due to the material's brittleness. For prototyping, some suppliers offer small-quantity R&D kits at premium rates.
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