Discontinued (Discontinued) ST6578 Cobalt Chromium Tungsten Target (CoCrW Target)

Cobalt-Chromium-Tungsten Target (CoCrW Target) Description

The Cobalt-Chromium-Tungsten Target (CoCrW Target) is a dense, high-performance sputter material made from an alloy that demonstrates excellent mechanical strength, thermal stability, and exceptional corrosion and wear resistance. The cobalt matrix provides a strong and tough foundation, contributing to the ductility and high-temperature resistance of the alloy. Chromium enhances the surface passivation capability by forming a stable oxide layer that protects the material from aggressive chemical environments and oxidation. Tungsten, with its high melting point and notable hardness, reinforces the structural integrity of the target, allowing it to withstand extreme thermal and mechanical stresses without compromising. The combination of these elements results in a stable, homogeneous, and fine-grained structure, often achieved through advanced processing techniques such as vacuum arc melting or hot isostatic pressing. This alloy exhibits a high melting range, low porosity, and balanced thermal expansion, making it suitable for demanding thin film processes. Its electrical conductivity is moderate and supports consistent sputtering behaviour, while its robust nature ensures dimensional stability and longevity of the target during extended sputter cycles.

Cobalt-Chromium-Tungsten Target (CoCrW Target) Specifications

*The product information above is based on theoretical data. For specific requirements and detailed inquiries, please contact us.

Size: Custom

Cobalt-Chromium-Tungsten Target (CoCrW Target) Applications

• Aerospace and turbine components: CoCrW thin films are used to coat engine parts, turbine blades, and combustion chamber components, providing excellent resistance to high-temperature oxidation, thermal fatigue, and erosion.
• Biomedical devices: Due to the biocompatibility of cobalt and chromium and the wear resistance of tungsten, CoCrW coatings are used on orthopaedic and dental implants to enhance surface durability and reduce the formation of wear particles in the body.
• Industrial tools and cutting equipment: The target is used for depositing hard coatings on cutting tools, mould tools, and wear parts. These coatings extend tool life by increasing hardness, reducing friction, and resisting deformation at high temperatures.
• Chemical processing plants: In corrosive chemical environments, CoCrW layers serve as protective barriers on reactors, valves, and pump parts, shielding equipment from acid and alkali attacks, particularly at elevated temperatures.
• Electronics and MEMS: In microelectromechanical systems (MEMS) and modern electronics, CoCrW coatings provide mechanical strength, dimensional stability, and oxidation resistance, thus enabling durable microstructures.

Cobalt-Chromium-Tungsten Target (CoCrW Target) Packaging

Our products are packaged in customised boxes of various sizes that align with the dimensions of the material. Smaller items are securely packed in PP boxes, while larger items are placed in bespoke wooden crates. We ensure strict compliance with custom packaging specifications and utilise appropriate cushioning materials to provide optimal protection during transit.

Packaging: Cardboard, wooden box, or customised.

Manufacturing Process

1. Brief outline of the manufacturing process

2. Testing Procedures

1. Chemical composition analysis - Verified using techniques such as GDMS or XRF to ensure compliance with purity requirements.
2. Mechanical properties testing - Includes tests for tensile strength, yield strength, and elongation to assess material performance.
3. Dimension measurement - Measures thickness, width, and length to ensure adherence to specified tolerances.
4. Surface quality assessment - Checks for defects such as scratches, cracks, or inclusions through visual and ultrasonic inspections.
5. Hardness testing - Determines material hardness to confirm uniformity and mechanical reliability.

Frequently Asked Questions about Cobalt-Chromium-Tungsten Targets (CoCrW Targets)

Q1: What is the density and purity of the CoCrW target?

A1: Our CoCrW targets are manufactured with a density of over 99% and a high material purity typically ≥99.9% to ensure uniform sputtering rates and consistent thin film quality.

Q2: Can CoCrW targets be used in both RF and DC sputtering systems?

A2: Yes, CoCrW targets are compatible with both RF and DC magnetron sputtering systems, depending on the coating setup and layer requirements.

Q3: Are different sizes and shapes available?

A3: Yes. We offer CoCrW targets in various dimensions, including planar and rotary configurations, with customisable diameters, thicknesses, and bonding options.

Performance Comparison Table with Competing Products

CoCrMo Target vs. Titanium Target vs. CoCrW Target

Related Information

1. Raw Materials - Cobalt

Physical Properties

- Density: ~8.90 g/cm³

- Melting Point: 1 495℃

- Boiling Point: 2 927℃

- Magnetism: Ferromagnetic up to 1 115℃ (Curie temperature), making it suitable for magnetic materials

- Appearance: Bright silver-grey with a slightly blue hue; stable in air at room temperature

Chemical Properties

- Cobalt is resistant to oxidation and maintains stability in the air by forming a passive oxide layer.

- In compounds, it typically exhibits oxidation states +2 and +3 (Co²⁺ and Co³⁺) and forms a wide variety of oxides, chlorides, and sulfates.

- Cobalt compounds are usually strongly coloured (e.g., cobalt blue from CoAl₂O₄).

Industrial Role

- Superalloys: Cobalt is often used to enhance high-temperature strength and oxidation resistance in turbine blades and aerospace components.

- Magnetic materials: As a key component in AlNiCo, samarium-cobalt, and other permanent magnets, cobalt plays an important role in electronics and electric motors.

- Batteries: Cobalt is used in lithium-ion battery cathodes (e.g., LiCoO₂) due to its excellent electrochemical properties.

- Sputter targets and thin films: Cobalt and its alloys are used for thin film deposition for magnetic, wear-resistant, and corrosion-resistant coatings.

Other Properties

- Mechanical Strength: High strength and ductility both at room temperature and elevated temperatures.

- Corrosion Resistance: Good resistance to acids and moisture; suitable for chemically aggressive environments.

- Biological Role: An essential trace element in human nutrition, found in vitamin B₁₂ (cobalamin), although elemental cobalt is toxic in excess.

2. Raw Materials - Chromium

Physical Properties

- Density: ~7.19 g/cm³

- Melting Point: 1 907℃

- Boiling Point: 2 671℃

- Hardness: Chromium is one of the hardest metallic elements (Mohs hardness ~8.5) and offers excellent wear resistance.

- Appearance: Silvery-grey, brittle metal with high lustre and reflectivity.

Chemical Properties

- Chromium is highly resistant to oxidation and tarnishing, as it forms a stable, passive oxide layer (Cr₂O₃) that protects the underlying metal from corrosion.

- It typically exhibits oxidation states +3 and +6. Cr³⁺ is more stable and less toxic, while Cr⁶⁺ is a strong oxidising agent but environmentally harmful.

- Chromium compounds are known for their vivid colours (e.g., chromium green, chromium yellow) and are commonly used in pigments and dyes.

Industrial Applications

- Stainless steel and alloys: Chromium is a key element in stainless steel and is usually added in a concentration of ≥10.5% to increase corrosion and oxidation resistance.

- Protective coatings: Due to its hardness and glossy surface, it is used for chromium plating and PVD coatings (Physical Vapour Deposition) for tools, automotive parts, and electronics.

- Sputter targets and thin films: Chromium targets are used to produce hard, conductive, and corrosion-resistant coatings on semiconductors, displays, and optical devices.

- Refractory materials: Due to its high melting point, chromium is used in the manufacture of high-temperature ceramics and stones.

Other Properties

- Electrical resistivity: Moderate (~12.9 μΩ-cm), thus suitable for controlled conductive layers.

- Toxicity: While metallic chromium and Cr³⁺ compounds are generally considered safe, Cr⁶⁺ compounds are toxic and subject to regulation.

- Environmental Stability: Chromium forms stable compounds that do not degrade in many harsh chemical environments.

3. Raw Materials - Tungsten

Tungsten (W) is a high-melting metal known for its exceptionally high melting point, mechanical strength, and resistance to thermal and chemical decomposition. It has an atomic number of 74 and belongs to the group of transition metals in the periodic table. Tungsten has the highest melting point of all metals at 3 422℃ and a very high boiling point of around 5 555℃, making it ideal for applications at extreme temperatures. It is dense (19.25 g/cm³), hard, and exhibits excellent thermal and electrical conductivity. Chemically, tungsten is relatively inert; it is resistant to oxidation at room temperature and maintains stability in a variety of corrosive environments. Its strength and low vapour pressure at high temperatures make it an indispensable material for applications in aerospace, electronics, and high-performance alloys. In thin film and sputter target applications, tungsten contributes to layer hardness, thermal stability, and wear resistance.