Product Overview
Tungsten Diboride Sputtering Target (W2B) is a compound sputtering target used to deposit thin films where a specific pre-compounded chemistry is required. These materials can behave differently from conductive metallic targets in terms of electrical response, thermal shock resistance, density sensitivity, and cracking risk, so target dimensions, density, backing design, and sputtering mode should be considered together.
Material and Deposition Characteristics
The appropriate sputtering mode depends on target conductivity, thermal behavior, and the power-supply configuration. Many compound ceramic targets are evaluated first with RF magnetron sputtering, especially when electrical resistivity is high. For brittle or low-thermal-conductivity materials, density, backing support, and stable cooling are important for reliable operation.
Technical Data
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Purity | 99.5% – 99.9% | Higher purity improves thin film consistency |
| Composition | Stoichiometric W₂B | Ensures proper boride film properties |
| Density | ≥ 95% theoretical density | Supports stable sputtering performance |
| Diameter | 25 – 300 mm (custom) | Compatible with various sputtering systems |
| Thickness | 3 – 6 mm | Influences sputtering rate and target lifetime |
| Bonding | Copper backing plate optional | Improves heat dissipation and structural stability |
| Material | Key Advantage | Typical Application |
|---|---|---|
| Tungsten Diboride (W₂B) | Extremely hard and thermally stable boride coating | Wear-resistant and high-temperature coatings |
| Tungsten Carbide (WC) | Excellent hardness and wear resistance | Cutting tools and protective coatings |
| Titanium Diboride (TiB₂) | High hardness and good electrical conductivity | Hard coatings and conductive ceramics |
| Tungsten (W) | Very high melting point | High-temperature coatings and electronics |
| Question | Answer |
|---|---|
| Can the Tungsten Diboride Sputtering Target be customized? | Yes, target dimensions, density, purity, and bonding options can be customized to meet specific sputtering system requirements. |
| Is W₂B a conductive material? | Tungsten diboride is considered a conductive ceramic, allowing it to be used in both RF and DC sputtering systems depending on system configuration. |
| What are the advantages of tungsten boride coatings? | They offer high hardness, excellent wear resistance, high-temperature stability, and strong chemical resistance. |
| Do W₂B targets require backing plates? | For high-power sputtering systems, copper backing plates are recommended to improve thermal conductivity and target stability. |
| Which industries use tungsten boride thin films? | Aerospace, semiconductor research, tool manufacturing, electronics, and advanced materials laboratories. |
Typical Thin-Film Applications
- Compound thin films for semiconductor, optical, protective, hard-coating, and functional-material research
- Applications where a pre-compounded target is preferred over co-sputtering separate elemental targets
- Projects requiring controlled chemistry and tailored target geometry for PVD development
Target Configuration and Ordering Considerations
When requesting a quotation, provide target diameter or rectangular dimensions, thickness, purity or composition, required quantity, and whether a backing plate or bonded assembly is needed. For brittle ceramic or compound targets, it is useful to specify the cathode model, backing-plate material, preferred bonding method, operating power if known, and any density, tolerance, or inspection-document requirements. TFM can review drawings, old-target photos, and application details when custom dimensions are required.
Frequently Asked Questions
What is the main reason to use a Tungsten Diboride sputtering target?
It provides a composition-specific source for depositing thin films when the required chemistry is better introduced from a pre-compounded target than from co-sputtering separate elements.
How should the sputtering mode for Tungsten Diboride be selected?
The power mode should be selected from target conductivity, thermal behavior, and equipment capability. Many compound ceramic targets are first evaluated with RF magnetron sputtering.
Why are density and microstructure important for Tungsten Diboride targets?
Uniform density and microstructure help support stable erosion and thermal behavior, while pores or local defects can increase the risk of cracking, particles, or unstable plasma.
Can a Tungsten Diboride target be supplied with a backing plate?
Yes. Where the material is brittle or the cathode requires a backing assembly, bonded configurations can be reviewed according to target size, thickness, cooling, and operating power.
Does target composition always equal film composition?
No. Film chemistry can shift because of different sputtering yields, reactive conditions, substrate temperature, re-sputtering, or chamber history. Verify the film when the chemistry is critical.
What should I provide to request a quotation for Tungsten Diboride?
Please provide material composition, purity, dimensions, quantity, target or backing configuration, cathode model or system details, and any drawing, tolerance, or inspection requirements.
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