ガラス被覆したPbTeの高温酸化 Oxidation Behavior of Oxidation-resistive Glass-coated PbTe
Oxidation behavior of lead telluride (PbTe) and glass-coated PbTe was studied at oxygen partial pressures of 10Pa to 0.1MPa in the temperature range between 700 to 900K. Mass loss was observed at moderately low oxygen partial pressures and at high temperatures, while mass gain was observed at high oxygen partial pressures and at low temperatures. For the samples which showed mass loss, Pb<SUB>3</SUB>TeO<SUB>5</SUB> or Pb<SUB>5</SUB>TeO<SUB>7</SUB> formed on the PbTe surface. The formation of PbTeO<SUB>3</SUB> layer or Pb<SUB>2</SUB>TeO<SUB>4</SUB>/PbTeO<SUB>3</SUB> multi-layer caused the mass gain. Oxidation resistance of PbTe was improved by the glass-coating. No mass change was observed up to 20ks.
粉体および粉末冶金 44(7), 653-657, 1997-07-15
Japan Society of Powder and Powder Metallurgy