Glass samples

Chemical composition

Composition of glasses in the ternary diagram

S₁

35 Na₂O∙8 PbO∙2Cr₂O₃∙55 P₂O₅

0.044 (Cr₂O₃-P₂O₅)∙0.778 (Na₂O-P₂O₅)∙0.178 (PbOP₂O₅)

S₂

25 Na₂O∙18 PbO∙2Cr₂O₃∙55 P₂O₅

0.044 (Cr₂O₃-P₂O₅)∙0.556 (Na₂O-P₂O₅)∙0.4 (PbO-P₂O₅)

S₃

15 Na₂O∙28 PbO∙2Cr₂O₃∙55 P₂O₅

0.044 (Cr₂O₃-P₂O₅)∙0.333 (Na₂O-P₂O₅)∙0.622 (PbO-P₂O₅)

S₄

5 Na₂O∙38 PbO∙2Cr₂O₃∙55 P₂O₅

0.044 (Cr₂O₃-P₂O₅)∙0.111 (Na₂O-P₂O₅)∙0.845 (PbO-P₂O₅)