TY - JOUR
T1 - Production of aluminum-titanium-boron master alloy by aluminothermic process
AU - Yücel, O.
AU - Şahin, F. C.
PY - 2001/5
Y1 - 2001/5
N2 - Al-Ti-B alloys are used as commercial alloys in the aluminum and steel industry. Reacting chemical salts of titanium and boron with molten aluminum produces alloys that are used in the aluminum industry, while Al-Ti-B alloys for the steel industry are produced by metallothermic reactions. In this study, pre-alloys with high titanium and boron contents that may be used for the production of aluminum alloys are produced by a metallothermic reduction process. The effect of the addition of the thermite mixture, which consists of potassium chlorate and aluminum, on the Ti, Al and B content of the alloy and Ti and B recovery, was investigated at the stoichiometric aluminum addition and by varying B2O3/TiO2 ratio. An alloy containing 49.8% Ti, 5.7% B, 24.7% Al in metallic and 4.6% Al in oxide form was obtained by 46.9% Ti and 47.7% B recovery at a B2O3/TiO2 ratio of 0.22 and by adding a thermite mixture which is 50% of the charged amount. At the same B2O3/TiO2 ratio, the effect of CaO addition on the Ti, Al and B contents of the alloy and on Ti and B recoveries was also studied. CaO addition had no beneficial effect on metal recoveries. By varying the B2O3/TiO2 to 0.33 and thermite mixture/charge ratio to 60%, Ti, B and metallic Al content of the alloy changed to 63.1%, 7.7% and 25.0% respectively, and recovery of Ti and B was 66.5% and 47.7% respectively. In this alloy, Al in oxide form was determined as 2.0%.
AB - Al-Ti-B alloys are used as commercial alloys in the aluminum and steel industry. Reacting chemical salts of titanium and boron with molten aluminum produces alloys that are used in the aluminum industry, while Al-Ti-B alloys for the steel industry are produced by metallothermic reactions. In this study, pre-alloys with high titanium and boron contents that may be used for the production of aluminum alloys are produced by a metallothermic reduction process. The effect of the addition of the thermite mixture, which consists of potassium chlorate and aluminum, on the Ti, Al and B content of the alloy and Ti and B recovery, was investigated at the stoichiometric aluminum addition and by varying B2O3/TiO2 ratio. An alloy containing 49.8% Ti, 5.7% B, 24.7% Al in metallic and 4.6% Al in oxide form was obtained by 46.9% Ti and 47.7% B recovery at a B2O3/TiO2 ratio of 0.22 and by adding a thermite mixture which is 50% of the charged amount. At the same B2O3/TiO2 ratio, the effect of CaO addition on the Ti, Al and B contents of the alloy and on Ti and B recoveries was also studied. CaO addition had no beneficial effect on metal recoveries. By varying the B2O3/TiO2 to 0.33 and thermite mixture/charge ratio to 60%, Ti, B and metallic Al content of the alloy changed to 63.1%, 7.7% and 25.0% respectively, and recovery of Ti and B was 66.5% and 47.7% respectively. In this alloy, Al in oxide form was determined as 2.0%.
KW - Al-Ti-B alloys
KW - Metallothermic reactions
UR - http://www.scopus.com/inward/record.url?scp=0035334396&partnerID=8YFLogxK
U2 - 10.1515/HTMP.2001.20.2.137
DO - 10.1515/HTMP.2001.20.2.137
M3 - Article
AN - SCOPUS:0035334396
SN - 0334-6455
VL - 20
SP - 137
EP - 142
JO - High Temperature Materials and Processes
JF - High Temperature Materials and Processes
IS - 2
ER -