| 摘要 |
<p>The invention is the protective coating composition providing protection of carbon based refractory brick etc. materials from oxidation via application of surface coating after production and thus extending their expected service life and it comprises frit composition formed of Na2O, Al2O3, SiO2, ZrO2, CaO, P2O5, B2O3 materials and at least one solvent mixture. Said solvent mixture comprises; acetone, ethyl or methyl alcohol, phosphoric acid and / or sulphuric acid.</p> |
