Overview
Lead titanate (PbTiO3) is an inorganic compound with a perovskite crystal structure, known for its strong ferroelectric and piezoelectric properties. It was first synthesized in the 1950s and has since become a critical material in advanced ceramics and electronic components. Unlike other piezoelectric materials, lead titanate exhibits a high Curie temperature (~490°C), making it stable for high-temperature applications. Its tetragonal crystal structure contributes to its unique electromechanical coupling characteristics, which are exploited in specialized industrial and scientific applications.
Physical and Chemical Properties
As a ceramic material, lead titanate appears as a fine yellow to brown powder with a density of 7.6 g/cm³. It is chemically stable under normal conditions but decomposes at high temperatures (>1000°C). The material is insoluble in water and most organic solvents. Key physical properties include its high dielectric constant and low dielectric loss, which are essential for electronic applications. The ferroelectric phase transition at ~490°C (Curie temperature) is a defining characteristic, allowing it to maintain piezoelectric behavior in demanding thermal environments where other materials would lose functionality.
Main Applications
Lead titanate is primarily used in piezoelectric devices, including ultrasonic transducers for medical imaging and industrial nondestructive testing. Its high acoustic impedance makes it particularly suitable for high-frequency applications. In the electronics industry, it serves as a key component in multilayer capacitors and pyroelectric detectors. Recent research explores its use in energy harvesting systems and memory devices. The material's compatibility with thin-film deposition techniques has expanded its role in microelectromechanical systems (MEMS) and sensor technologies.
Safety and Storage
Due to its lead content, lead titanate requires careful handling to prevent exposure. Workers should use appropriate personal protective equipment (PPE), including respirators and gloves, especially when handling powder forms. Storage should be in sealed containers in a dry, well-ventilated area away from acids and other incompatible substances. Spills should be contained and cleaned by trained personnel following local regulations for lead-containing waste disposal. Material Safety Data Sheets (MSDS) must be consulted before use.
B2B Procurement Guide
Industrial buyers should prioritize suppliers who provide detailed certificates of analysis, including purity levels (typically ≥99%), particle size distribution, and trace metal content. Technical specifications should match the intended application requirements. Consider ordering custom formulations when specific dielectric or piezoelectric properties are needed. Given the regulatory concerns around lead, verify that suppliers comply with RoHS exemptions and provide proper documentation for international shipments. Bulk purchases (10+ kg) typically offer better pricing, with lead times varying from 2-6 weeks depending on supplier inventory.
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