Overview
Pure titanium sputtering targets are precision-engineered metallic components used in vacuum deposition systems to create thin, uniform coatings. These targets are manufactured from high-grade titanium (typically Grade 1 or Grade 2) with stringent control over impurity levels, particularly oxygen and nitrogen content. In industrial applications, titanium targets are favored for their exceptional film adhesion properties and ability to form stable oxide layers when reactive sputtering is employed. The global market for titanium sputtering targets has grown significantly with the expansion of flat panel display and photovoltaic industries.
Physical and Chemical Properties
Titanium targets exhibit a hexagonal close-packed (HCP) crystal structure at room temperature, transitioning to body-centered cubic (BCC) above 882°C. The material's high strength-to-weight ratio and corrosion resistance stem from its passive oxide layer formation. Key technical parameters include thermal conductivity (21.9 W/m·K), electrical resistivity (420 nΩ·m), and Vickers hardness (90-120 HV). For sputtering applications, manufacturers optimize targets for density (>98% theoretical density) and grain size (typically 10-50μm) to ensure consistent deposition rates and film quality.
Main Applications
In semiconductor manufacturing, titanium targets create diffusion barriers between silicon substrates and aluminum interconnects. The microelectronics industry accounts for approximately 40% of high-purity titanium target consumption. Other significant applications include architectural glass coatings (where TiO₂ films provide self-cleaning properties), medical device coatings (enhancing biocompatibility), and aerospace components (wear-resistant surfaces). Emerging uses include electrochromic windows and flexible electronics, driving demand for thinner, larger-area targets.
Safety and Storage
While solid titanium targets pose minimal health risks, machining operations generate combustible dust requiring Class D fire extinguishers. Facilities should implement proper grounding during handling to prevent static discharge ignition. For long-term storage, vacuum-sealed packaging with desiccant is recommended. Targets should be inspected for surface oxidation before use, as excessive oxide layers (>5nm) can affect sputtering performance. Cleanroom protocols (ISO Class 5 or better) are mandatory for semiconductor-grade targets.
B2B Procurement Guide
Industrial buyers should specify target purity (3N5 to 4N), dimensions (±0.1mm tolerance), and bonding method (soldered or diffusion-bonded to backing plates). Request certified material test reports including glow discharge mass spectrometry (GDMS) analysis. Lead times for custom-sized targets range from 4-12 weeks. Consider suppliers with ISO 9001 certification and ask about their scrap titanium recycling policies. For high-volume orders (50+ kg), negotiate bulk discounts while maintaining quality assurance protocols.
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