2016
DOI: 10.1016/j.jallcom.2016.02.059
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Formation mechanism of calcium aluminate compounds based on high-temperature solid-state reaction

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Cited by 54 publications
(31 citation statements)
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“…C12A7 is an intermediate compound in the CaO and Al 2 O 3 binary system sandwiched between the two-phase regions consisting of C12A7 and either secondary phases denoted CA (CaAl 2 O 3 ) and C3A (Ca 3 Al 2 O 6 ) ( Figure 5). These two secondary phases are the formation products of C12A7 at higher temperatures (≥1200 • C), normally through solid-state synthesis, and decomposition products when no anions are present to stabilize the cage framework at high temperatures [63,64].…”
Section: C12a7 Synthesismentioning
confidence: 99%
See 1 more Smart Citation
“…C12A7 is an intermediate compound in the CaO and Al 2 O 3 binary system sandwiched between the two-phase regions consisting of C12A7 and either secondary phases denoted CA (CaAl 2 O 3 ) and C3A (Ca 3 Al 2 O 6 ) ( Figure 5). These two secondary phases are the formation products of C12A7 at higher temperatures (≥1200 • C), normally through solid-state synthesis, and decomposition products when no anions are present to stabilize the cage framework at high temperatures [63,64].…”
Section: C12a7 Synthesismentioning
confidence: 99%
“…It is suspected that the formation reaction proceeds through a secondary phase which is metastable, C5A3 (Ca Al O ) [63,64,66]. There is a small stoichiometric difference between the C12A7 and C5A3, 9 Ca Al O + Ca Al O → 2 [Ca Al O ] : 2O .…”
Section: C12a7 Synthesismentioning
confidence: 99%
“…Also, this material has been studied for biomedical applications (Regina de Oliveira et al, 2015), such as in odontology (Leal Silva et al, 2014;Engqvist et al, 2004;Parreira et al, 2016;Loof et al, 2003;Oliveira et al, 2010;Andrade et al, 2014), bone replacement (Uchida et al, 1984) and bone-graft applications (Kalita et al, 2002;Hulbert et al, 1970). As well, calcium aluminate has been the focus of several studies about of the synthesis processes, such as the sol-gel method (Aitasalo et al, 2002), solid state reaction (Miranda Hernández et al, 2018;Aitasalo et al, 2002;Yongpan et al, 2016), sintering (Miranda Hernández et al, 2018;Iftekhar et al, 2008;, mechanochemical synthesis (Wieczorek-Ciurowa et al, 2010), and the sonochemical process (Lourençoa et al, 2013). Calcium aluminate is synthesized principally from the CaO and Al 2 O 3 (Andrade et al, 2014;Yongpan et al, 2016;Iftekhar et al, 2008;Wieczorek-Ciurowa et al, 2010;Lourençoa et al, 2013;Zawrah and Khalil, 2007), but in some cases, the CaO is obtained through the thermic effect from CaCO 3 (Miranda Hernández et al, 2018;Andrade et al, 2014;Iftekhar et al, 2008;Galan et al, 2013).…”
Section: Introductionmentioning
confidence: 99%
“…As well, calcium aluminate has been the focus of several studies about of the synthesis processes, such as the sol-gel method (Aitasalo et al, 2002), solid state reaction (Miranda Hernández et al, 2018;Aitasalo et al, 2002;Yongpan et al, 2016), sintering (Miranda Hernández et al, 2018;Iftekhar et al, 2008;, mechanochemical synthesis (Wieczorek-Ciurowa et al, 2010), and the sonochemical process (Lourençoa et al, 2013). Calcium aluminate is synthesized principally from the CaO and Al 2 O 3 (Andrade et al, 2014;Yongpan et al, 2016;Iftekhar et al, 2008;Wieczorek-Ciurowa et al, 2010;Lourençoa et al, 2013;Zawrah and Khalil, 2007), but in some cases, the CaO is obtained through the thermic effect from CaCO 3 (Miranda Hernández et al, 2018;Andrade et al, 2014;Iftekhar et al, 2008;Galan et al, 2013). Also, CaCO 3 can be obtained from natural sources such as snail shells, egg shells or clam shells (Miranda Hernández et al, 2018;Singh and https://doi.org/10.1016/j.jmbbm.2019.05.041 Received 18 January 2019; Accepted 27 May 2019 Purohit, 2010;Viriya et al, 1016;Ligaszewski et al, 2009;White et al, 2007;Marxen et al, 2003;Niju et al, 2016).…”
Section: Introductionmentioning
confidence: 99%
“…[15] Up to date, the high-temperature solid DOI: 10.1002/crat.201700201 phase reaction method is one of the main methods for preparing C12A7, although this method is time consuming (above 10 hours). [16][17][18] Several measures were applied to synthesize C12A7 electrides, for instance, Ca metal-vapor treatment at 700°C for 240 hours, [19] thermal treatment in Ti metal-vapor, [20] and thermal treatment in a reducing atmosphere. [21] Among them, Ti metal reduction method is the most effective one to achieve high electron concentration in C12A7 electrides.…”
Section: Introductionmentioning
confidence: 99%