Thermal Spray Nonskid Coatings
Nonskid coatings are sometimes used to prevent or reduce slip hazards. Aluminium thermal spray coatings have been used successfully on metal substrates to prevent corrosion and impart nonskid properties. Historically, paint coatings have been used for non-skid applications. However, because of their greater hardness and roughness, aluminium thermal spray coatings are superior for many non-skid applications. The non-skid coating system is achieved by first applying aluminium thermal spray system 8-A. An additional spray pass of aluminium is then applied using reduced atomization air pressure. The lower air pressure allows for the deposition of larger spray particles that produce a rougher surface. Nonskid coatings should be sealed with thin film epoxies. Aliphatic polyurethanes can be used for durable striping if desired. Some common applications for nonskid coatings and the recommended thermal spray coatings systems may be found in Table 5-3.