Overview
High purity titanium sputtering targets are specialized materials used in physical vapor deposition (PVD) processes to create thin, uniform coatings. These targets are manufactured through vacuum melting and precision machining to achieve ultra-high purity levels (typically 99.95% to 99.999%) with controlled microstructure. As critical components in vacuum coating systems, titanium targets enable the production of films with excellent adhesion, uniformity, and electrical properties. The global market for titanium sputtering targets has grown significantly due to increasing demand in microelectronics and energy applications.
Physical and Chemical Properties
Titanium targets exhibit superior mechanical strength and thermal stability compared to other PVD materials. Their hexagonal close-packed (HCP) crystal structure transforms to body-centered cubic (BCC) above 882°C, affecting deposition characteristics. High purity grades contain minimal impurities, with oxygen being the most critical controlled element. The material's corrosion resistance stems from its passive oxide layer formation. Targets are typically supplied with surface roughness (Ra) below 0.8μm and density over 95% of theoretical value. Grain size is carefully controlled (usually 10-50μm) to ensure consistent sputtering rates and film quality.
Main Applications
In semiconductor manufacturing, titanium targets create barrier layers and adhesion layers in copper interconnects. The optical industry utilizes them for anti-reflective coatings and decorative finishes. Flat panel display production employs titanium for transparent conductive oxide (TCO) underlayers. Emerging applications include medical device coatings for improved biocompatibility and aerospace components requiring wear resistance. Research facilities use high purity targets for developing advanced thin film solar cells and superconducting materials.
Safety and Storage
While solid titanium targets pose minimal hazard, titanium powder (generated during machining) is pyrophoric and requires special handling. Always store targets in argon-filled packaging with desiccants to prevent oxidation. Maintain cleanroom conditions when handling to avoid surface contamination. Use appropriate personal protective equipment (PPE) including gloves and eye protection during installation. Ground all equipment to prevent static discharge. For bonded targets, verify the bonding integrity before use to prevent thermal failure during high-power sputtering.
B2B Procurement Guide
When sourcing titanium targets, clearly specify the required purity (3N5 to 5N), dimensions (diameter/thickness), and orientation (for crystalline targets). Consider whether you need bonded or monolithic designs based on your cooling requirements. Request certified chemical analysis and metallurgical reports. Evaluate suppliers based on their vacuum melting capabilities, quality control processes, and ability to provide custom geometries. Lead times typically range 4-8 weeks for standard sizes. For reference, 99.995% purity 6-inch diameter targets commonly cost $1,200-$2,500 per piece depending on thickness and order volume.
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