The automotive sector is the fastest-growing application segment for air plasma spray technology, leveraging innovative thermal spray coatings to improve durability, reduce weight, and enhance engine efficiency. From cylinder bore coatings to wear-resistant components, plasma spray technology is becoming essential for modern vehicle manufacturing.

Understanding Automotive Plasma Spray Applications

Plasma spray coatings are applied to automotive components to provide wear resistance, corrosion protection, and thermal management. The automotive industry's shift toward electric and fuel-efficient vehicles is driving demand for coatings that can handle greater stress and heat.

Key Automotive Applications

Cylinder Bore Coatings
Cylinder bore coatings are widely used in automotive internal combustion engines to replace cylinder liners. During atmospheric plasma spraying, coatings are oxidized and controlled by the Si content of the steel powder used as the coating raw material. Oerlikon Metco's SUMEBore™ is a powder-based thermal spray cylinder bore coating solution that reduces friction, wear, corrosion, oil consumption, fuel consumption, emissions, and weight while increasing engine performance.

Plasma-Powder Spray for Cylinder Bores
The plasma-powder spray process is used for coating aluminum-silicon cylinder block bores using a rotating plasma gun capable of producing coatings of reliable microstructure and integrity. Experience in Europe, Japan, and the USA shows that the plasma process offers a performance-proven and cost-effective solution for cylinder bore coating.

Mo-Added Ferrous Coatings
Mo-blended ferrous coatings fabricated using atmospheric plasma spraying can replace grey cast iron liners in automotive cylinder bores.

Market Drivers

Fuel Efficiency Regulations: Stringent environmental regulations are driving demand for lightweight materials and efficient engines.

EV Market Growth: The rapid expansion of electric vehicles is driving demand for lightweight components and thermal management solutions.

Emissions Reduction: Plasma spray coatings contribute to reduced emissions through improved engine efficiency.

Regional Dynamics

Asia-Pacific is the largest market for automotive plasma spray coatings, driven by robust automotive manufacturing in China, Japan, and South Korea. North America and Europe are also significant markets, with a focus on EV production and lightweighting.

Major Industry Players

Key suppliers of automotive plasma spray coatings include Oerlikon Metco, Sulzer Ltd, and Kennametal Inc.

Future Outlook

The automotive plasma spray market is expected to see strong growth, driven by the EV transition and the increasing demand for lightweight, fuel-efficient vehicles. Innovations in cylinder bore coating technology and battery thermal management will further expand the market.

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