| 摘要 |
PCT No. PCT/EP96/03318 Sec. 371 Date May 14, 1998 Sec. 102(e) Date May 14, 1998 PCT Filed Jul. 24, 1996 PCT Pub. No. WO97/05076 PCT Pub. Date Feb. 13, 1997The invention concerns a refractory material comprised essentially of vitreous or amorphous silica and presenting an improved resistance to corrosion by molten metals, principally aluminium. It contains at least 0.1% and no more than 10% by wt. of barium sulfate. It has a crystallized silica content of less than 10% and it is comprised of at least 75% vitreous or amorphous silica. |
