Health Risks Caused by Particulate Emission During Laser Cleaning

Abstract

Air contaminants that emerge during laser ablation often constitute health risks if released in the workplace and decrease laser cleaning efficiency if redeposited at the material surface. In addition, ultrafine particles are generated if short pulses are applied. Consequently, the authors describe nanoparticle aerosol generation and the influence of laser parameters and material surface on the nanoparticle size distribution. The high respirability of such particles can pose health risks, so suitable capture systems near the processing zone or personal protective equipment such as respiratory masks are required.