However there maybe other elements more suitable to these roles, for example iodine is known to lower the nucleation barrier of aerosol particles in a variety of systems [257]. Iron Steel Inst. Manganese significantly increased nitrogen solubility in liquid Fe-Mn and Fe-Mn-Al alloys. 0000002097 00000 n 5.41 wt% (Kim et al. containing the same amount of Fe as the sample solutions. The, V melt was also measured in the temperature range from 1823 to 1923 K. The present and, relation at constant activity to determine the, Ni alloy melts of various composition were, uctuation of iron melt could be controlled, 2014 The Japan Institute of Metals and Materials, rming the saturation of carbon in liquid iron. Laser polishing leads to a grain refinement and a significant increase in hardness. %%EOF attainment of equilibrium carbon solubility in liquid iron. 0000008867 00000 n It is shown that there exists a linear relation between the logarithm of the activity coefficient of carbon and the concentration of the third component over a considerably wide concentration range for all these systems except Fe–C–Mn, which needs a quadratic expression. There has been an increasing impurity concentration (particularly nickel and vanadium) in the coke used in the primary Al production which ends up in the Al alloys. 0000003741 00000 n 0000016234 00000 n However, titanium is very reactive with oxygen in liquid steel, and it can cause an unstable Ti yield. 0000041146 00000 n 0000003902 00000 n Phase diagrams are graphical representations of the phases present in an alloy at different conditions of temperature, pressure, or chemical composition. 0000007926 00000 n 0000043629 00000 n The ferrite phase is restricted with a maximum carbon solubility of 0.02 wt percent at 723 Deg. All mapped processes fall within a bulk residence time of 5–240 s, operating temperature of 1100–1500 ◦C and an atomic S:Fe of 0.1–10. 0000010935 00000 n - thermodynamic modeling of problematic inorganic phases in the waste combustion processes a substantial amount of valued metals such as vanadium, the smelting reduction process of this resource using the, carbothermic reaction is being developed and commercial-, ized to recover these metals in the form of ferro-alloys. 0 The compositions completely fulfill the requirements of Chinese national standard of FeV65N alloy. 102 56 %PDF-1.4 %���� South Korea imports 99% of its mineral metal resources, so it is important to recover valuable metals from metal-containing waste for sustainable domestic industry development. Strong, From the slopes of the straight lines shown, can be determined from the reciprocal of mole, cient at constant activity as the following, gure, the data show excellent linear relation-, cant second-order effect of vanadium on carbon, nickel content was not satisfactory enough as, is the second-order interaction parameter of i and j, values using the carbon solubility data for Fe, is the mole fraction of carbon solubility in Fe, cant temperature dependency and they could be used. With Al→Ti→Ca addition, the Al2O 3inclusions changed to dual phase Al2O3- TiOx inclusions with time by the reaction with Ti in the melt. Carbon Solubility in Liquid Iron Containing V, Mo and Ni Do-Hyeong Kim, Min-Kyu Paek, Tae-Jung Kim, Seung-Yeon Won and Jong-Jin Pak+ Department of Materials Engineering, Hanyang University, Ansan 426-791, Korea Liquid iron alloys containing V, Mo, and Ni can be produced by the carbothermic reduction of spent catalysts used in petrochemical Moreover, the density of FeV65N alloy can be up to 3.99 g/cm ³ . Therefore, the carbon, of various compositions was measured at 1873, i-j system can be expressed as the following relation using, determined, and eq. Mn Taking into account the alloying elements V, Mo and Ni, carbon solubility is usually between 4.9 wt% and 9.2 wt% (Kim et al. 0000023590 00000 n It is found that the addition of Fe can increase the nitrogen content and further remove oxygen and carbon, since it provides a liquid tunnel for carbon diffusion, which enhances the reaction kinetics greatly. 0000001416 00000 n 0000004703 00000 n Moreover, the, melt temperature control and the sampling techniques used in, the present study allowed us to determine the equ, carbon solubility more accurately. In both sulphides, Eu and Yb are preferentially incorporated compared to neighbouring REE. 0000013910 00000 n Iron-carbon phase diagram--terms Ferrite (α): Iron in a BCC structure. In this, process, it is essential to understand the thermodynamic, nature of carbon among alloying elements in liquid, ternary alloys have been carried out to determine the, interaction parameters between vanadium, molybdenum or, nickel on carbon in liquid iron in the temperature range from, iron alloys containing vanadium, nickel and molybdenum, simultaneously are not available yet.