Chemical Stability of a Phosphate Glass under Hydrothermal Conditions
Phosphate glasses have some properties superior to those of borosilicate glasses. Among these are lower melting temperature, higher solubility for molybdenum and better chemical durability for some alkali-low glasses. The high corrosion of metallic containers by the melt was overcome by using refractory-lined melters. The tendency for the phosphate glass to crystallize was suppressed by rapidly cooling small beads. The beads were then embedded in a lead matrix to yield a composite nuclear waste form (1).
KeywordsPhosphate Glass Rock Salt Waste Form Sodium Tripolyphosphate Leach Rate
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