| abstract |
In particular, as a silica-based powder composition for ceramic welding by injection, - from 10 to 90% of siliceous particles comprising at least 80% by weight of cristobalite and at most 15% by weight of tridimite, based on the total weight of the composition, - from 90 to 10% by weight, based on the total weight of the composition, of conventional additives forming a binding phase, The siliceous particles have an d 50 of 350 to 800 μm, preferably 400 to 500 μm. |