Overview
Titanium cobalt (Ti-Co) sputtering targets are specialized materials used in physical vapor deposition (PVD) processes to create thin films with tailored properties. These targets combine titanium's strength and corrosion resistance with cobalt's magnetic and wear-resistant characteristics. They are typically manufactured in disc or rectangular shapes with precise atomic ratios (e.g., Ti90Co10) to meet specific industrial requirements. Sputtering targets are critical in advanced manufacturing, particularly for applications requiring durable, conductive, or optically functional coatings. The Ti-Co variant is favored in niche sectors like magnetic storage devices and high-performance tool coatings due to its unique alloy properties.
Physical and Chemical Properties
Ti-Co targets exhibit a metallic luster and are fabricated to ultra-high purity levels (≥99.9%) to minimize contamination during deposition. Their density varies with cobalt content but typically ranges between 4.5–5.5 g/cm³. The alloy retains titanium's high melting point (~1660°C) while incorporating cobalt's ferromagnetic properties. Chemically, the targets are stable under standard conditions but may oxidize if exposed to moisture or high temperatures. Their electrical conductivity makes them suitable for RF or DC sputtering systems. Uniform grain structure and low porosity are essential to ensure consistent film deposition rates and minimal particle generation.
Main Applications
In semiconductor manufacturing, Ti-Co targets deposit diffusion barrier layers to prevent copper migration in integrated circuits. The solar industry uses them for back-contact electrodes in photovoltaic cells, leveraging their conductivity and adhesion properties. Optical coatings for lenses and mirrors often incorporate Ti-Co films to enhance durability. Another key application is in wear-resistant coatings for cutting tools, where the alloy's hardness extends tool lifespan. Emerging uses include data storage media, where cobalt's magnetism is utilized for high-density recording layers.
Safety and Storage
While solid Ti-Co targets pose minimal risk, machining or handling fine particles requires precautions. Use NIOSH-approved respirators and gloves to prevent inhalation or skin contact with metal dust. Store targets in vacuum-sealed packaging or inert gas environments to prevent oxidation. Dispose of machining waste as hazardous metal scrap. Facilities should have proper ventilation during target bonding (e.g., to backing plates) to avoid fume exposure. MSDS sheets must be reviewed for specific alloy compositions, as cobalt compounds may have additional regulatory restrictions.
B2B Procurement Guide
When sourcing Ti-Co sputtering targets, prioritize suppliers with ISO 9001 certification and a track record in high-purity materials. Clearly specify the required composition (e.g., atomic percentage of Co), dimensions (diameter/thickness), and surface finish (e.g., ≤0.5 µm roughness). Request material test reports (MTRs) verifying purity and homogeneity. For large orders, consider requesting a sample batch for performance testing. Lead times can vary from 4–12 weeks due to custom fabrication processes. Negotiate pricing for bulk purchases (e.g., 50+ kg), and confirm logistics support for fragile shipments.
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