Process-generated nanoparticles from ceramic tile sintering: Emissions, exposure and environmental release

Fonseca, Ana Sofia; Maragkidou, Androniki; Viana, Mar; Querol, Xavier; Hämeri, Kaarle; Francisco, I. de; Estepa, C.; Borrell, C.J.; Lennikov, V. V.; Fuente, G.F. de la

doi:10.1016/j.scitotenv.2016.01.106

Cited by 39 publications

(27 citation statements)

References 30 publications

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“…This could be verified with some other experiments using SiC and Si3N4 as the matrix former complimented with nitrides, carbides of borides for the ceramic composite high temperature material [14][15][16].…”

Section: Proposalsupporting

confidence: 75%

Ceramic Nanomaterials for High Temperature Applications

Gamero¹

2018

RDMS

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Ceramic nanomaterials have exhibited extraordinary characteristics, based in its low density, hardness and when properly engineered, good corrosion properties in high temperature applications. In the nanoscale world, we can find nanomaterials that do not necessarily apply to the correlation of strength and density. It has been studied that ceramic nanomaterials have some control boundaries that are critical in high temperature applications; grain sizes, grain boundaries density, operating conditions (thermal cycles), nano-crystalline structure and large voids (because of the porous nature of ceramic materials).In this research paper, it will be discussed some of the most important applications, processing methods and several adhesion methods to metal substrates with the final purpose to enhance metal properties and mitigate high temperature corrosion. As a quick review, it will be discussed some of the environmental health & safety (EHS) concerns and some parallel experiments that could be done for reinforcing the investigations done in this subject.

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Section: Proposalsupporting

confidence: 75%

Ceramic Nanomaterials for High Temperature Applications

Gamero¹

2018

RDMS

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“…This could be verified with some other experiments using SiC and Si 3 N 4 as the matrix former complimented with nitrides, carbides of borides for the ceramic composite high temperature material [14][15][16].…”

Section: Proposalsupporting

confidence: 74%

Ceramic Nanomaterials for High Temperature Applications

Gamero¹

2017

RDMS

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One of the most studied applications is the use of ceramic nanoparticles as pigments to enhance the material properties and products life-cycle. This application is more focused to polymers. The idea is a mitigation of the polymer degradation that can be observed when exposed to ultraviolet light. It has been observed that with the proper blending and binder's ratio, the mechanical and elevated temperature properties can be improved. Ceramic pigments have shown to be a good option in the nano-level for high quality coatings. As reported by Sankar S et al. [1] ceramic pigments show good impact-resistance for ferrous metals and its application in corrosive environments as well as high temperature applications based in the thermal behavior of the coating.One of the most important applications for this nano-materials, it's the direct application to aggressive environments or high temperature applications like nozzle tips for the inside combustion parts in the automotive industry or its use in turbomachinery, more specific, in combustion and hot gas path components of aviation engines or heavy duty gas turbines for the power business. For being able to apply this technology, it is important to consider the adhesion into the metal substrate of the ceramic coating, where spallation, cracking or not-homogeneous distribution can be observed when improperly added together.As reported by Vert R et al.[2] air plasma spraying technique was used for making a thin film of few micrometers thick, where it was confirmed by Vickers indentation and tensile tests, the compatibility of these two different materials (metal substrate with a ceramic coating). Processing MethodsThere are several processing methods that will be briefly discussed in this section, some of this are in experimental phase as nano-powder infiltrated transient eutectic phase (NITE) process, sol-gel method and carbon nanotubes. As reported by Kuznetsov NT [3], NITE based in the use of silicon carbide nano-powders and its mixture of yttrium and aluminum oxides to be subjected to a temperature of 1800-1950 °C at a pressure of 15-20MPA (usually referred as hot pressing) so that the melted film favors the orientation and a good matrix control of the nanoparticles.With NITE method, good mechanical characteristics are exhibited along with stress limit of 400MPA and an elasticity modulus of 310GPA with good oxidation resistance. Figure 1 shows a cross section of SiC/SiC NITE micrograph, composite material suitable for high temperature applications. It can be clearly distinguished the fiber from the matrix and its interaction.Sankar et al. [3], was a silicone resin binder developed by high temperature ceramic pigment nanoparticles with a high hardness that can be used under high temperature or aggressive environment applications. The preparation of the ceramic pigments was through Ceramic Nanomaterials for High Temperature ApplicationsCopyright © All rights are reserved by Mikhail Gamero. AbstractCeramic nanomaterials have exhibited extraordinary characteristics, based...

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“…During the ablation of UPG tiles under low energy settings, high NP concentrations in the size bins <10 nm were recorded (80-100 *10 3 /cm 3 ), evidencing nanoparticle emissions. The small sizes of NP detected suggest that they may source from nucleation from atoms and ions (Noël et al, 2007) as well as from gaseous precursors (A. S. Fonseca et al, 2015Fonseca et al, , 2016. As described above, in this scenario gaseous precursor emissions may originate from direct sublimation and from evaporation of the melt (cf.…”

Section: Experiments Carried Out Under Low Energy Settingsmentioning

confidence: 75%

“…Pulsed laser ablation (PLA), in particular, is a state-of-the-art method used for ceramic tile processing in order to achieve designs with enhanced durability and aesthetic properties (Pascual et al, 2005). However, this technology is known to generate nanoparticle (NP, <100 nm) emissions to workplace air and the environment (A. S. Fonseca et al, 2015Fonseca et al, , 2016. Based on current literature, understanding the sources and mechanisms controlling the formation and release of process-generated nanoparticles (PGNP) in industrial settings is becoming increasingly relevant, in order to minimize potential hazards (Hameri, Lahde, Hussein, Koivisto, & Savolainen, 2009;van Broekhuizen, 2012;Viitanen, Uuksulainen, Koivisto, Hämeri, & Kauppinen, 2017).…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle formation and emission during laser ablation of ceramic tiles

Salmatonidis

Viana

Pérez

et al. 2018

Journal of Aerosol Science

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Pulsed laser ablation (PLA) is a widely used technology, for surface structuring and tile decoration in the ceramic industry. During PLA, nanoparticles (NP <100 nm) are unintentionally released and may impact exposure. This work aims to understand the mechanisms controlling NP formation and release during ablation of different types of ceramic tiles, using different laser setups (near-IR and mid-IR). The measurements took place at laboratory and pilot-plant-scale, with varying laser wavelength, frequency, velocity, and pulse duration. In total, the combination of 4 types of ceramic tiles and 2 lasers was assessed. Particle number concentration and size distribution (SMPS with nano-DMA, DiSCmini, butanol-CPC) and particle mass concentration (DustTrak-DRX) were monitored. Samples were also collected for morphological and chemical characterization (TEM/EDX). High particle number concentrations were detected (3.5*10 4 /cm 3 to 2.5*10 6 /cm 3) for all of the tiles and under both laser setups. Particle formation (<10 nm) by nucleation was detected, and secondary amorphous SiO2 nanoparticles (>10 nm) were formed and released during ablation of the porcelain tiles. Different release mechanisms were identified: during ablation with the near-IR laser particles were emitted through melting and nucleation, while emissions from the mid-IR laser were attributed to melting and mechanical shockwaves. Particle number and mass emissions were dependent on the tile surface characteristics (e.g., porosity, crystallinity) and chemical properties. This work is potentially relevant from the point of view of exposure mitigation strategies in industrial facilities where PLA is carried out.

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Process-generated nanoparticles from ceramic tile sintering: Emissions, exposure and environmental release

Cited by 39 publications

References 30 publications

Ceramic Nanomaterials for High Temperature Applications

Ceramic Nanomaterials for High Temperature Applications

Ceramic Nanomaterials for High Temperature Applications

Nanoparticle formation and emission during laser ablation of ceramic tiles

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