Heat treatment furnace for dynamically and continuously preparing high-temperature superconductive strip with fluorine-free chemical solution deposition method

Abstract

The invention discloses a heat treatment furnace for dynamically and continuously preparing a high-temperature superconductive strip with a fluorine-free chemical solution deposition method. The continuous heat treatment furnace (9) has the structure that a hearth (12) comprises a silicon carbide pipe with a thermocouple; a high-temperature-resistant stainless steel furnace pipe (13) is installed in the hearth, and air inlets (16), (17), (18) and (19) and exhaust openings (15) and (20) are arranged on the high-temperature-resistant stainless steel furnace pipe; brackets (14) with equal distance are installed in the furnace pipe (13); a bracket (21) is installed under the furnace body; and a pulley (22) is installed under the bracket (21). The invention can simultaneously realize different heat treatment processes controlled by various atmosphere subareas and has high productivity. The equipment disclosed by the invention is used for preparing the strip on the basis of the fluorine-free chemical solution deposition method under a non-vacuum condition, has the advantages of no need of matched facilities for fluorine exhaust, low cost and simple process and is suitable for industrialized production.

Description

technical field [0001] The invention belongs to the field of high-temperature superconducting coating material preparation, and in particular relates to a device for dynamically and continuously preparing high-temperature superconducting strips by a fluorine-free chemical solution deposition method. Background technique [0002] The second-generation high-temperature superconducting tape, that is, the coated conductor, has great application prospects in the fields of electricity, transportation, military and medicine due to its high critical current density and irreversible field in the liquid nitrogen temperature range. Among them, the high manufacturing cost is the main factor restricting the large-scale application of the second-generation high-temperature superconducting tape. At present, the buffer layer and superconducting layer of the high-performance second-generation strips in the world are generally prepared by vacuum deposition. The vacuum deposition method needs...

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Problems solved by technology

In recent years, people have used the relatively mature trifluoroacetate method to prepare high-performance superconducting layers for strips, but the buffer layer still uses the high-cost vacuum deposition method.

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