A conductive filler engineered with atomic-level precision.
For over 30 years, Weber has advanced the science of vapometallurgy to create materials that deliver consistency, stability, and high electrical performance. Vapor Nickel–Coated Graphite (VNCG) is the result of that work — a conductive filler produced through true vapor-phase nickel deposition rather than plating or chemical coating.
Each particle is encapsulated with 99.9% pure nickel, deposited atom by atom using Weber’s proprietary Nickel Vapor Deposition (NVD) process. This produces a high-purity, uniform coating structure with performance characteristics not achievable through conventional coating methods.
VNCG is a vapor-deposited nickel-coated graphite developed and manufactured exclusively by Weber using our NVD process.
What Is VNCG?
VNCG powders are produced using Weber’s NVD vapometallurgy platform — the same technology that underpins our industry-leading NVD tooling. During deposition, nickel vapor bonds uniformly to every surface of each graphite particle, forming a continuous, highly conductive shell with exceptional mechanical and thermal stability.
Every grade of VNCG is engineered for:
- A uniform 99.9% nickel shell
- Exceptional conductivity and thermal cycling stability
- Precise and reproducible particle-size distributions
- Stable tap and apparent densities for predictable formulation behavior
The result is a conductive filler that delivers consistent electrical performance, reliable dispersion, and long-term stability in demanding formulations.
Why VNCG Matters in Your Application
Engineered advantages that directly improve your material performance.
Stable Conductivity Under Real-World Stress
The vapor-deposited nickel shell does not crack or separate under compression, flexing, or temperature cycling.
Outcome: Parts maintain electrical performance throughout their service life.
Consistent Electrical Behavior Across Batches
Every production batch is tested for PSD, density, and resistivity.
Outcome: Predictable performance and fewer formulation adjustments.
Lower Filler Loading Requirements
The continuous nickel shell maximizes conductive surface area.
Outcome: Achieve conductivity targets at lower loadings → reduced weight, improved flow, lower cost.
Reliable Dispersion and Rheology Control
Engineered particle distributions support stable processing behavior.
Outcome: Smoother compounding, more precise molding, fewer defects.
Designed for High-Consequence Applications
VNCG supports performance-critical requirements in:
- Conductive elastomers
- EMI shielding compounds
- Adhesives and tapes
- Automotive and aerospace electronics
- Medical and industrial devices
VNCG050
Fine Particle Distribution
Ideal for elastomers, adhesives, transfer tapes, and applications requiring smaller filler particles with stable conductivity.
- Nickel content: 57–63%
- Particle size (µm): D10 ≈ 35, D50 ≈ 50, D90 ≈ 80
- Tap density: 1.8 g/cc
- Apparent density: 1.2–1.5 g/cc
- Volume resistivity: <5 mΩ-cm
VNCG085
Coarser Particle Distribution
Suited for formulations requiring higher loading, enhanced mechanical strength, or specific flow characteristics.
- Nickel content: 58–63%
- Particle size (µm): D10 ≈ 58, D50 ≈ 85, D90 ≈ 138
- Tap density: 1.8 g/cc
- Apparent density: 1.3–1.5 g/cc
- Volume resistivity: <3 mΩ-cm
Why Vapor-Deposited Powders Outperform Coated Graphite
A difference in process creates a difference in performance.
|
Performance Attribute |
VNCG (Vapor-Deposited Nickel) |
Mechanically Coated Graphite |
Chemically Plated Graphite |
|
Nickel purity |
99.9% |
Variable |
Moderate |
|
Coating uniformity |
Continuous vapor-formed shell |
Inconsistent |
Generally uniform, edge variation |
|
Delamination risk |
None |
High |
Moderate |
|
Thermal cycling stability |
Excellent |
Poor |
Moderate |
|
Conductivity consistency |
Highly repeatable |
Unpredictable |
Moderate |
|
Batch variation |
Minimal; CoA included |
High |
Moderate |
|
Ability to coat irregular shapes |
High |
Limited |
Limited |
Applications: Built for High-Performance Materials
Use Cases
- Electrically conductive plastics and elastomers
- EMI/RFI shielding compounds
- Form-in-place gaskets (FIP)
- Thermal interface materials (TIMs)
- Reinforced composites and lightweight structural fillers
- Additive manufacturing blends (powder metallurgy, hybrid feedstocks)
Industries Served
- Electronics and semiconductors
- Aerospace and automotive
- Consumer technology
- Energy storage
- Defense and specialty coatings
R&D at Weber: Innovation as a Core Capability
A materials science environment designed for continuous advancement.
Weber supports VNCG development with integrated R&D and testing capabilities, including:
- Vapor-phase coating development apparatus
- Ability to coat spherical and non-spherical substrates
- Mastersizer 3000 for precise PSD measurement
- In-house tap density and resistivity testing
- Pilot-scale production for formulation trials
- Certificates of Analysis for every batch
This infrastructure allows Weber to respond quickly to customer needs, explore new material systems, and ensure consistent quality at scale.
Why
Weber
Precision, consistency, and a vapor-deposition process available nowhere else.
Choosing VNCG means:
- Access to the world’s only vapor-deposited nickel-coated graphite
- Batch-to-batch reliability verified through comprehensive testing
- North American manufacturing and technical support
- Conductive fillers engineered through 30 years of vapometallurgy expertise
- Material behavior you can trust in critical applications
When performance matters, vapor-deposited structures offer advantages no plated or mechanically coated filler can match.
Why Weber for VNCG
Precision, consistency, and a vapor-deposition process available nowhere else.
Choosing VNCG means:
- Access to the world’s only vapor-deposited nickel-coated graphite
- Batch-to-batch reliability verified through comprehensive testing
- North American manufacturing and technical support
- Conductive fillers engineered through 30 years of vapometallurgy expertise
- Material behavior you can trust in critical applications
When performance matters, vapor-deposited structures offer advantages no plated or mechanically coated filler can match.
