Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 55, Issue 28, Pages 7679-7695Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.6b01725
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Funding
- EPSRC [EP/K027530/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K027530/1] Funding Source: researchfish
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The feasibility of a new processing method solution precursor high-velocity oxygen fuel spray (SP-HVOFS) is presented for the production of dense ZrO2-based nanostructured coatings, in which organometallic chemical precursor droplets are injected into the HVOF spray system. With the help of developed computational fluid dynamics (CFD) solver (Fluent), the evolution of particle volume, area, and number concentration is simulated considering nucleation, coagulation, and sintering. The aerosol model is validated with the experimental data available in the literature. When the oxygen-fuel gas flow rate (GFR) is increased, the (i) velocity and (ii) enthalpy of the HVOF flame is increased. The former reduces the particle residence time in the HVOF flame while the latter favors the sintering. Overall the results show that, by controlling the GFR, single scale nanometre particles (similar to 1-5 nm) can be fabricated without any agglomeration.
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