Two-phase thermoelectric body comprising a lead-tellurium matrix

Claim 1

AS AN ARTICLE OF MANUFACTURE, A SHAPED, SEMICONDUCTOR LEAD-TELLURIUM TWO-PHASE BODY COMPRISING A MATRIX OF CONSOLIDED LEAD AND TELLURIUM IN THE PROPORTION OF BETWEEN 43 MOLE PERCENT TO 54 MOLE PERCENT LEAD, AND 57 MOLE PERCENT TO 46 MOLE PERCENT TELLURIUM, THE SAID MATRIX HAVING UNIFOR,;U DOS MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF MAGNESIUM, ALUMINUM, ZIRCONIUM, BERYLLIUM, CHROMIUM, HAFNIUM, VANADIUM; THE NITRIDES OF BORON AND RARE EARTH ELEMENTS OF LANTHANIDE AND ACTINIDE SERIES; THE SULPHIDES OF THE REAR EARTH ELEMENTS OF LANTHANIDE AND ACTINIDE SERIES; THE PHOPHIDES OF BORON, ALUMINUM; THE CARBIDES OF BORON, SILICON, MAGNESIUM, TITANIUM; THE SILICIDES OF CARBON; THE FULORIDES OF CALCIUM, MAGNESIUM, SODIUM; THE SAID DISPERSANT BEING PRESENT IN THE RANGE OF FROM 0.001 MOLE PERCENT TO 29 MOLE PERCENT OF THE MATRIX, TAND HAVING AN ABSOLUTE MELTING POINT OF AT LEAST 105% OF THE MELTING POINT OF THE SAID MATRIX MATERIL, THE SAID DISPERSANT ALSO HAVING A SOLUBILITY IN THE MATRIX OF LESS THAN 10 MOLE PERCENT AT A TEMPERATURE WHICH IS 60% OF THE ABSOLUTE MELTING POINT OF THE MATRIX, THE SAID DISPERSANT ALSO BEING CHARACTERIZED BY A PRECENT CUBIC THERMAL EXPANSION WHICH DIFFERS ARITHMETICALLY FROM THAT OF THE MATRIX BY A DEVIATION OF FROM 0.50% TO 2.00% OVER THE RANGE OF 0*C. TO 500*C.