| http://www.w3.org/ns/prov#value | - xide, or nickel oxide and other metal oxides such as aluminum oxide or lead oxide; alkaline inorganic compounds such as sodium silicate, alkali phosphates, borax, and combinations thereof.In another embodiment, the diluent is a glass-forming material including but not limited to silicates, aluminosilicates or borosilicates or combinations thereof.
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