Caracterización y preparación de ceniza volante para su uso como recubrimientos cerámicos sobre substratos metálicos

Chávez, A.; Vargas‐Gutiérrez, G.; Almanza, J. M.

doi:10.3989/cyv.2008.v47.i6.158

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…On the other hand, Fig. 4 presents the results of zeta potential measurement of FA-30%Sm 2 O 3 mixture (wt%) in an acetone suspension which was selected because has a better stability according to a previous work focused on EPD of fly ash [11]. Without additions of HCl and NaOH, the suspension had high stability with a zeta potential of -75 mV, therefore this condition was used to carry out the EPD experiments.…”

Section: Resultsmentioning

confidence: 99%

Fly Ash/Rare Earth Oxide Coatings by EPD: Processing and Characterization

Morquecho¹,

Chávez-Valdez

Aguilar³

et al. 2012

KEM

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Novel materials that can be used as thermal barrier coatings in high temperature applications were obtained by homogenization, mechanical milling and thermal treatment. Samarium oxide was investigated as an alternative to react with the free silica from fly ash and to form new silicate compounds. The main phases found in fly ash-Sm2O3 mixtures were mullite and samarium silicate Sm4.66O(SiO4)3. Electrophoretically deposited coatings from these materials were obtained at 50 V and 3 minutes deposition time. The surface microstructure of the coatings was characterized by scanning electron microscopy (SEM-EDXS). The coatings were homogeneous and showed no crack formation. Additionally, thermal conductivity of the bulk samples at room temperature was determined. The thermal conductivity values of the new materials were below 1 W/mK which makes them suitable for thermal and environmental barrier applications.

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Section: Resultsmentioning

confidence: 99%

Fly Ash/Rare Earth Oxide Coatings by EPD: Processing and Characterization

Morquecho¹,

Chávez-Valdez

Aguilar³

et al. 2012

KEM

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“…Esta pérdida de masa presenta la máxima pendiente entorno a 950ºC y se atribuye a la combustión del carbón inquemado presente en las cenizas volantes que forman parte de la formulación de ambos tipos de cemento. Aunque la combustión de carbón inquemado se puede producir desde los 600ºC en una atmósfera oxidante, en presencia de una atmósfera inerte de N 2 , como la empleada en la cámara, puede retrasar esta combustión y producirla a partir de los 880ºC (Chávez et al, 2008, Yinghai et al, 2011 …”

Section: Caraterización De Los Cementos De Partidaunclassified