Investigation into the Interaction of Exogenous Refractory Nanophases with a Fe–C–Si Melt (Cast Iron) at 1350°С: II. Effect of Nanophases on Surface Tension, Density of Melt, and Mechanical Properties of Metal

Density and surface tension of molten cast irons

“…The experimentally measured density data for molten cast irons are scarce in literature [4][5][6]. Recently, Hellstrom et al [6] employed dilatometric method to study density and thermal expansion of lamellar cast irons with carbon content ranging from 2.33 to 3.8 wt% and silicon content between 1.68 and 2.11 wt%, over rather narrow temperature range (90-130 K above liquidus).…”

“…The density of Fe-3C-2Si (wt%) [4], which composition is relatively close to the present CGI-0 alloy, is 7.045 g•cm -3 at 1473 K, which is 3.6% higher than the density of CGI-0 alloy recorded on heating. Burtsev et al [5] measured density of molten cast iron containing 3.6 wt% of carbon and 2.8 wt% of silicon with the use of a large drop method. As illustrated in Fig.…”

“…3 result not only from the differences in composition of alloys but to some extent also from differences in methods used, as discussed in review [26]. [4]; Fe-3.6C-2.8Si [5]; Fe-3.8C-1.74Si, Fe-3.64C-1.68Si [6]. Wettability study of the CGI-0/Al2O3 couples [15] shows that in the course of the abovedescribed experiment (exactly the same experimental conditions), the CGI-0 alloy does not wet the alumina substrate (the contact angle >>90°).…”

“…The surface tension data of iron-based alloys found in literature (Table 3) are reported for alloys that differ not only regarding the content of carbon and silicon, but also other elements such as phosphorus, manganese, sulphur and oxygen, the latter known to be surface active components in Fe-based alloys [4,5,7,25,[30][31][32][33][34][35][36][38][39][40]. However, even for simple binary and ternary Fe-C-Si alloys, the literature data are ambiguous (Fig.…”

“…Whilst cast irons are a group of the oldest and still the most widely used alloys in metal casting history due to beneficial combination of their low cost, good castability and utility properties [2,3], yet the literature survey shows extreme scarcity of experimental thermophysical data of cast irons and only limited experimental data can be found in open literature [4][5][6][7]. This is understandable considering methodological problems due to high temperatures involved and hard to avoid risk of reactivity between a molten alloy and a refractory material used as a container or a substrate in container or substrate assisted techniques for thermophysical properties measurements.…”