TY - JOUR
T1 - Plasma arc evaporation from molten silicate glasses
AU - Matsumaru, Koji
AU - Fukuyama, Hiroyuki
AU - Susa, Masahiro
AU - Nagata, Kazuhiro
PY - 1999
Y1 - 1999
N2 - Samples of 40 mass%SiO2-40CaO-20Al2O3 (Glass) and 36mass%SiO2-36CaO-18Al2O3-10Fe 2O3(Fe-Glass) were melted by argon plasma arc, with iron rods used for arc ignition. A direct current transferred type plasma generator was used with an output power of 6 kW. During arc melting, the iron rod located in the centre of the molten glass was melted. During Glass melting, the oxygen partial pressure was kept constant in the chamber. On the other hand, during Fe-Glass melting, the oxygen partial pressure steeply increased in the initial stage and then gradually decreased. The chemical state of iron ion in Fe-Glass was changed from Fe3+ to Fe2+ rapidly. The evaporation rates from Glass and Fe-Glass were 3.8×10-7 kg/s and 2.0×10-7 kg/s, respectively. It has been concluded that the rate of evaporation from the molten glasses is affected by the oxygen partial pressure which is determined by the state of the iron oxides in the samples during the melting.
AB - Samples of 40 mass%SiO2-40CaO-20Al2O3 (Glass) and 36mass%SiO2-36CaO-18Al2O3-10Fe 2O3(Fe-Glass) were melted by argon plasma arc, with iron rods used for arc ignition. A direct current transferred type plasma generator was used with an output power of 6 kW. During arc melting, the iron rod located in the centre of the molten glass was melted. During Glass melting, the oxygen partial pressure was kept constant in the chamber. On the other hand, during Fe-Glass melting, the oxygen partial pressure steeply increased in the initial stage and then gradually decreased. The chemical state of iron ion in Fe-Glass was changed from Fe3+ to Fe2+ rapidly. The evaporation rates from Glass and Fe-Glass were 3.8×10-7 kg/s and 2.0×10-7 kg/s, respectively. It has been concluded that the rate of evaporation from the molten glasses is affected by the oxygen partial pressure which is determined by the state of the iron oxides in the samples during the melting.
KW - Evaporation
KW - Iron oxide
KW - Oxygen partial pressure
KW - Plasma arc melting
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U2 - 10.2320/jinstmet1952.63.1_21
DO - 10.2320/jinstmet1952.63.1_21
M3 - Article
AN - SCOPUS:0032664310
SN - 0021-4876
VL - 63
SP - 21
EP - 27
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 1
ER -