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Cladding Coating

The cladding coating is a protective layer that is applied to steel surfaces. It is a critical part of the steel fabrication process and helps prevent corrosion, damage, and wear. The cladding coating is also used in building structures to protect the walls from weather, wind, and other environmental factors. The cladding coating is made from various metals, alloys, or composites, and can be applied in a number of ways, including spraying, brushing, or welding.

Cladding is typically made of zinc or a zinc-aluminium alloy and acts as a sacrificial coating to prevent galvanic corrosion at unprotected points on the steel surface. A sacrificial zinc coating will corrode if exposed to an electrolyte such as seawater, which is a major cause of corrosion in ships and offshore structures. The cladding coating can be eroded, which reduces its effectiveness. The cladding coating may be damaged by mechanical impact or exposure to chemicals, such as acids.

Protect and Beautify: Understanding the Importance of Cladding Coating

Laser cladding is an advanced manufacturing technique that uses lasers to melt and deposit a protective or functional layer onto metal parts. The cladding coating can be made of metals, alloys, ceramics, or composite materials and can provide many benefits, such as improved wear resistance or thermal conductivity.

To determine the microstructure and morphology of the laser-cladded 27SiMn steel, small metal samples (11 x 11 x 11 mm3) were cut by wire cutting and then ground, polished with high-granularity sandpaper, and observed under a metallurgical microscope. The middle region of the cladding layer contains a mixture of fishbone-like dendrites and elongated dendrites with smaller grain sizes.

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