| 摘要 |
<p>The invention relates to a crucible for melting crystalline silicon, a method for producing the crucible and a spray coating liquid, belongs to the technical field of crucibles, is used for solving the problem that the coating of the existing crucible is easy to peel off and damage during the use process, so impurities cannot be well prevented from permeating, and aims to provide the spray coating liquid for a coating of a crucible for melting crystalline silicon. The spray coating liquid comprises silicon nitride, a sintering additive, and an organic binder, an inorganic binder and a sintering binder which can be bound with a crucible body at normal temperature. Further provided is a crucible which adopts the spray coating liquid. The crucible comprises a crucible body, the internal surface of the crucible body is coated with a coating, and the coating is formed by spraying the spray coating liquid. Also provided is a method for producing the crucible, which produces the crucible for melting crystalline silicon through spray coating, drying, burning off and sintering. The crucible can be repeatedly used, and the coating is not easy to peel off and damage, so the impurities, particularly oxygen element in the crucible body can be effectively prevented from permeating.</p> |
