Ultrafine and nanoparticle formation and emission mechanisms during laser processing of ceramic materials
The use of laser technology in the ceramic industry is undergoing an increasing trend, as it improves surface properties. The present work aimed to assess ultrafine and nanoparticle emissions from two different types of laser treatments (tile sintering and ablation) applied to two types of tiles. New particle formation mechanisms were identified, as well as primary nanoparticle emissions, with concentrations reaching up to 6.7×10<sup>6</sup>particlescm<sup>-3</sup> and a mean diameter of 18nm. Nanoparticle emission patterns were strongly dependent on temperature and raw tile chemical composition. Nucleation events were detected during the thermal treatment independently of the laser application. TEM images evidenced spherical ultrafine particles, originating from the tile melting processes. When transported across the indoor environment, particles increased in size (up to 38nm) with concentrations remaining high (2.3×10<sup>6</sup>particlescm<sup>-3</sup>). Concentrations of metals such as Zn, Pb, Cu, Cr, As and TI were found in particles <250nm.
Main Authors: | , , , , , |
---|---|
Other Authors: | |
Format: | artículo biblioteca |
Published: |
Elsevier
2015
|
Subjects: | Particle transport, Indoor air, LDSA, New particle formation, Tile sintering, Furnace, |
Online Access: | http://hdl.handle.net/10261/147844 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100004837 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|