Title:
ノズル及びその製造方法
Document Type and Number:
Japanese Patent JP6815499
Kind Code:
B2
Abstract:
A nozzle according to the present invention comprises: a nozzle body having an internally hollow part through which molten steel can move, and having a discharge port through which the molten steel can move to the outside of the internally hollow part, and a liner provided so as to surround at least a part of the inner wall of the nozzle body, wherein the liner is made of a raw material comprising calcium oxide (CaO) stabilized zirconia (CSZ) and a sintering additive for inducing sintering of calcium oxide (CaO) stabilized zirconia (CSZ). Thus, according to the embodiments of the present invention, a liner is manufactured by using a sintering additive in a solid electrolyte to induce sintering of the solid electrolyte, such that it is possible to prevent the deterioration of oxygen ion conductivity or improve oxygen ion conductivity as compared to the prior art. In addition, since graphite (C) is not contained in the raw material for producing the liner according to the embodiments of the present invention, it is not necessary to coat an inner wall surface with an antioxidant. Therefore, it is possible to prevent the problem of oxygen ion conductivity deterioration caused by the antioxidant.
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Inventors:
Kim, Uk
Application Number:
JP2019520390A
Publication Date:
January 20, 2021
Filing Date:
December 15, 2016
Export Citation:
Assignee:
POSCO
International Classes:
B22D11/10; B22D41/54
Domestic Patent References:
| JP62192254A | ||||
| JP8281419A | ||||
| JP62104654A |
Attorney, Agent or Firm:
Kyosei International Patent Office