| 摘要 |
<p>The invention is based on the object of specifying a cost-effective process for producing a quartz glass crucible having an inner layer of transparent, synthetically produced quartz glass which is distinguished by a long service life. According to the invention, this object is achieved by a process comprising the following process steps: (a) a gas-permeable crucible substrate having an inner side is produced by solidifying at least the surface of a layer of SiO2 particles, (b) a porous SiO2 soot layer is deposited on at least a partial area of the inner side of the crucible substrate by vapour deposition, and (c) the porous SiO2 soot layer and at least part of the crucible substrate are subjected to vacuum-assisted sintering by means of an arc and under a vacuum which acts over the wall of a vacuum fusion mould, to form the quartz glass crucible and the inner layer of transparent quartz glass.</p> |
