| 摘要 |
This invention is directed to lead-free and, where desired, cadmium-free frits for glazes and enamels, said frits consisting essentially, in mole percent on the oxide basis, of SiO2 55-75 Na2O 3-9 B2O3 8-13 ZrO2 2-5 Al2O3 0.5-3 BaO 0.5-16 Various inert refractory materials may be included as fillers. |
