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CVD Ch-plated
INFI DIAMOND
Single-crystal CVD Diamond Wafer Chrome-plated Heat Sink Substrate
Chromium plating can solve two core application challenges of diamond: first, it improves the bonding strength between diamond and the metal substrate; second, it effectively prevents diamond from oxidizing and graphitizing at high temperatures.
Diamond wafer With Chrome-plated surface advantages
Key Advantages | Typical Application & Rationale |
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Stronger bonding: Chromium is a strong carbide-forming element, which can react on the diamond surface to form a dense chromium carbide layer (such as Cr₇C₃, Cr₃C₂, etc.). This carbide layer acts like a "molecular glue," achieving both chemical bonding and metallurgical bonding between the coating and the diamond, solving the problem that diamond is difficult to bond with metals due to its chemical inertness. | Electronic packaging heat sinks, heat dissipation substrates, and heat dissipation for high-power semiconductors (such as GaN and SiC) |
Better thermal stability: Chromium and its carbide layer effectively isolate oxygen, preventing diamond from oxidizing and graphitizing at high temperatures (above 1200°C), thus protecting its hardness. | Aerospace components, nuclear reactors, optical components, medical surgical instruments |
Reducing interfacial thermal resistance: In high thermal conductivity composite materials, chromium acts as an intermediate transition layer, connecting diamond and the metal matrix, improving phonon matching at the interface between the two materials, significantly reducing interfacial thermal resistance, and enhancing the overall thermal conductivity of the composite material. | Precision parts, precision sealing rings, piston rings, oil-free lubricated components |
