JPH08193255A - Production of superconducting alloy or superconducting ceramic - Google Patents

Abstract

PURPOSE: To produce a superconductor at low temps. by exposing the alloy or ceramic packed in a treating tank to the vapor of a chlorine-base org. solvent. CONSTITUTION: A heating and cooling pipe 20 is arranged at the lower part of a treating tank T, and a holder 26 is movably arranged thereabove. An alloy or ceramic W is placed on the holder. A mixture of the water Wa, surfactant soln. S and methylene chloride soln. Me (chlorine-base org. solvent) is injected to the liq. level higher than the pipe 20 where the alloy or ceramic on the holder 26 is not dipped. Steam at 160 deg.C is supplied to the pipe 20 to heat the water Wa plus surfactant soln. S to vaporize the methylene chloride soln. Me, and the alloy or ceramic W is exposed to the vapor. Consequently, a superconductor is produced with high reproducibility.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention produces a superconducting phenomenon,
The present invention relates to a method for producing a superconducting alloy or superconducting ceramic exhibiting the Meissner effect for use in a superconducting magnet, a Josephson element, or the like.

Superconductivity is a phenomenon in which the electric resistance of a certain kind of metal, alloy or ceramic suddenly becomes 0 at extremely low temperature, and superconductor represents a phenomenon such as a persistent current. Even if the magnetic field H is changed while keeping the temperature T constant below the critical temperature Tc, the same transition occurs. Since a magnet using a superconductor has a large critical magnetic field, it consumes very little power and can be a magnet with a small volume. Conventionally, Nb-Ti, Nb-Zr, Nb-Sn, and the like have been used as alloys that exhibit such a superconducting phenomenon, and these have a critical temperature Tc of about 30K in absolute temperature. Recently, BaO ・ Y ₂ O ₃・ CuO
Or BaO / La ₂ O ₃ / CuO is used,
The critical temperature Tc is about 90K. In the production of such a ceramic superconductor, 550-6
It is known that a phase transition occurs near 00 ° C., and in this case, the tetragonal structure does not show a superconducting phase, but the low temperature stable orthorhombic structure shows a superconducting phase. For example, JP-A-64-
The technology is disclosed in Japanese Patent No. 45722 and Japanese Patent Laid-Open No. 64-14157.

[0003]

In order to produce such superconducting ceramics, a low temperature stable phase having an orthorhombic structure is obtained by calcining raw material powders mixed and mixed so as to have a required composition. Calcined powder or a calcined powder consisting of a mixed structure of a low temperature stable phase of orthorhombic structure and a high temperature stable phase of tetragonal structure,
After the fine powder having a required particle size was obtained by a wet pulverization or a dry pulverization method, the fine powder was pressure-sintered under a specific condition to obtain a superconducting material having a low temperature stable phase having an orthorhombic structure. However, there are five drawbacks of the conventional method for manufacturing a superconductor.
It is necessary to sinter under pressure from 00 to 600 ° C., a tetragonal structure occurs at a high temperature, a superconducting phenomenon does not occur, and a phase transition does not occur at a low temperature. The point was that they could not manufacture the body. In particular, in the case of manufacturing a room temperature superconductor having a critical temperature close to room temperature, even if the room temperature superconductivity phenomenon happens to occur experimentally, there is a problem that the experiment is not reproducible. . All of these drawbacks arise from the fact that it is necessary to sinter at high temperature, and it is difficult for the superconductor produced thereby to obtain the required orthorhombic structure. INDUSTRIAL APPLICABILITY The present invention enables the conventional superconducting alloy or ceramics to be transformed into a superconductor by a chemical method at a low temperature without depending on sintering by high heat.

[0004]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. In claim 1, a treatment in which a chlorine-based organic solvent and water are mixed and heated to generate steam and steam of the chlorine-based organic solvent, and the steam and steam of the chlorine-based organic solvent are sealed with an alloy or ceramics. By filling the tank and exposing the alloy or ceramics to the steam,
A method for producing a superconducting alloy or a superconducting ceramic.

In the second aspect, a methylene chloride solution and water are mixed and heated to generate methylene chloride vapor and steam, and the methylene chloride vapor and steam are filled in a treatment tank in which an alloy or ceramics is sealed. Then, the superconducting alloy or the superconducting ceramics is manufactured by exposing the alloy or the ceramics to the vapor.

In a third aspect of the present invention, a methylene chloride solution, water and a surfactant liquid are mixed to form a mixed liquid, and the mixed liquid is heated to generate methylene chloride vapor, steam and a surfactant vapor, and the mixed liquid. This is a method of manufacturing a superconducting alloy or superconducting ceramics by filling steam into a processing tank containing an alloy or ceramics and exposing the alloy or ceramics to the mixed steam.

According to a fourth aspect, in the method for producing the superconducting alloy or the superconducting ceramics according to the second or third aspect,
The heating temperature of the mixture of methylene chloride solution and water is 70
The method for producing a superconducting alloy or superconducting ceramics is characterized in that the temperature is in the range of 140 to 140 ° C.

According to a fifth aspect of the present invention, in the method for producing a superconducting alloy or superconducting ceramics according to the first, second or third aspect, the treatment tank is evacuated and the alloy or ceramic is treated in a deaerated state. And a method for producing a superconducting alloy or a superconducting ceramic.

[0009]

Next, the operation will be described. The vapor and steam of the chlorine-based organic solvent of the present invention, or the chlorine-based organic solvent, and methylene chloride vapor and water vapor as the chlorine-based organic solvent permeate to the inside of the structure of the alloy or ceramics forming the superconductor, After a manufacturing process of 24 to 36 hours, it changes to a superconducting alloy or a superconducting ceramic having an orthorhombic structure. In the production method, the boiling point of the chlorine-based organic solvent or methylene chloride may be 40 ° C. or higher, and considering the generation of water vapor, the treatment can be performed at a temperature between 70 ° C. and 140 ° C., and thus low temperature stability It is possible to transform into a high orthorhombic structure. In this manufacturing method, the manufacturing process can be performed more reliably by bringing the inside of the tank close to a vacuum.

This superconductivity phenomenon is explained by a mechanism in which a pair of electrons, whose spins are opposite to those of a wave number vector, form an electron pair through the interaction with a photon. The electron pair has the character of a Bose particle, the wave function is monovalent, and the corresponding one-two-electron state is occupied by a macroscopic number of electron pairs. Thus, unlike ordinary free electrons in metals, or normal conductors, this type of superconductor has uniform coherent motion throughout the superconductor, causing superconductivity in a superfluid-like fashion. The safety of the electron pair is expressed by the gap of the energy level, and this value is one half of that for one electron considering the ordinary electron pair.
To use. The energy gap decreases with increasing temperature, which explains the phenomenon of transition.

In the prior art, the action of decreasing the energy gap by increasing the temperature is obtained by the action of chlorine ions generated by the chlorine-based organic solvent or methylene chloride vapor. When vapor of this chlorine-based organic solvent or methylene chloride is applied to Fe, the phase transitions at a low temperature of 70 to 140 ° C., and magnetic iron oxide such as magnetite or maghetite is generated. Further, conventionally, it is generated by quenching which is generated by heating to 500 to 600 ° C. and then rapid cooling.
It has been confirmed that a transition to the martensite phase occurs.

Thus, the chlorine ion belongs to the transition metal ions such as Fe, which causes the transition to magnetic iron oxide at low temperature or constitutes the martensite phase similar to quenching.
It is considered to be generated by changing the spin state of d-electrons. The magnetism is determined by the spin state of the 3d electrons, and the magnetism changes as the number of surrounding anions and the strength of attracting electrons influence the way the 3d electron orbits are split. Further, since grain boundaries such as ceramics have different impurity levels and arrangement of atoms from inside the grains, the combination shows electrical and magnetic characteristics different from the case of being single.

The change in the physical properties due to the substitution of the element belonging to one group can be caused by the difference in the radius of the atom or the ionic. The cation produced by removing the outermost shell electron from the element is smaller than the original atomic state, and conversely, the anion formed by receiving the electron so as to fill the outermost shell is large.
These radii are determined by the energy level of the outermost electron and the effective nuclear charge acting on it.

In the present invention, chlorine ions generated from a chlorine-based organic solvent or methylene chloride stimulate cations and anions to generate ionic bonds or covalent bonds, so that Fe is changed to magnetic iron oxide. However, it is conceivable that the alloy or ceramic has an orthorhombic structure. As described above, the structure transition occurs at a low temperature, so that a stable superconductor having an orthorhombic structure can be formed.

[0015]

EXAMPLES Next, examples will be described. Examples of chlorine-based organic solvents include trichlorethylene (CHCl = CCl ₂ ),
Perchlorethylene (CCl ₂ = CCl ₂ ), 1,1,
1-trichloroethane (CH ₃ CCl ₃ ) and CFC 1
13 (CCl ₂ FCClF ₂ ) and the like. Methylene chloride is one of the chlorine-based organic solvents.

Of the above chlorine-based organic solvents, methylene chloride is most effective in the method for producing the present superconducting alloy or superconducting ceramic. The methylene chloride is a substance having a molecular weight of 84.93 represented by the chemical formula CH ₂ Cl ₂ . The chemical name is methylene chloride, and in addition to methylene chloride as a general name, it may be called dichloromethane or methylene dichloride. Boiling point is 40.4
At ℃, the melting point is -96.8 ℃.

The surfactants are classified into anionic surfactants, cationic surfactants, nonionic surfactants and amphoteric surfactants. Examples of the anionic surfactant include sodium alkylsulfate, sodium amidosulfate, sodium secondary alkylsulfate, sodium alkylsulfonate, sodium amidosulfonate, sodium alkylallylsulfonate, sodium alkylnaphthalenesulfonate and the like.

Examples of the cationic surfactant include amine acetate, alkyltrimethylammonium chloride, dialkylmethylammonium chloride, alkylpyridinium halide and alkyldimethylbenzylammonium chloride. As the amphoteric surfactant,
There are carboxylic acid type, sulfonic acid type, sulfuric acid ester type and the like. Examples of the nonionic surfactant include polyoxyethylene alkylphenol, polyoxyethylene fatty alcohol, polyoxyethylene fatty acid, polyoxyethylene acid amide, polyoxyethylene fatty amine, and polypropylene glycol.

In the method for producing a superconducting alloy or superconducting ceramics of the present invention, when the alkalinity becomes strong, C
Since l ₂ is likely to be generated, it is necessary to avoid this, and polyoxyethylene alkylphenol and polyoxyethylene fatty alcohol, which are alcohol-based nonionic surfactants that are relatively stable against acids and alkalis However, it is effective in this respect. However, other surfactants are also effective in the method for producing a superconducting alloy or superconducting ceramic.

When a mixed solution of methylene chloride solution, water and surfactant liquid is heated as in the present invention, the following methylene chloride vapor, water vapor and surfactant vapor are also generated. Gas or compound is generated. That is, HCHO, HF, HCl, HBr, NH ₃ , Cl ₂
(Small), CH ₄ , CO, CO ₂ , organic acid, organic compound. Examples of the organic acid include phosphoric acid, citric acid, pyruvic acid, malic acid, succinic acid, lactic acid, formic acid, acetic acid, levulinic acid, pyroglutamic acid, propionic acid, isobutyric acid and isovaleric acid.

FIG. 1 is a basic structural drawing of a method for manufacturing a superconducting alloy or superconducting ceramics of the present invention, FIG. 2 is a drawing showing steps and procedures of a method for manufacturing a superconducting alloy or superconducting ceramics by opening and closing a valve mechanism, and FIG. FIG. 5 is a side view of the processing tank T, the lid 22, and the mounting table 26, FIG. 4 is a side view of the processing tank T with the lid 22 closed, and FIG.
2 is a front view of the processing tank T, FIG. 6 is a front sectional view of the processing tank T, FIG. 7 is a front view of a state in which an alloy or ceramics W is placed on the mounting table 26, and FIG. FIG.

In FIG. 3, FIG. 4, FIG. 5, FIG. 6 and FIG.
The configurations of the processing tank T, the lid 22, and the mounting table 26 will be described. That is, the processing tank T constitutes a pressure vessel, and in the method for producing a superconducting alloy or superconducting ceramics of the present invention, it becomes 50 Torr in the degassed state, and 200 Torr at the time of vapor recovery of methylene chloride. It is configured as a pressure vessel. A lid 22 is provided on the front surface, and the lid 22 is formed integrally with the mounting table 26. The mounting table 26 moves on a moving rail 25 provided inside the processing tank T, and the lid 22 is a portion of a moving rail 24 below the lid supporting portion 23, both of which can move integrally. I am trying.

The alloy or ceramics W to be treated is placed on the placing table 26 that is integrally drawn out and inserted into the lid 22. The lid 22 and the processing tank T are hermetically fixed and pressure is applied with the part of the mounting table 26 inserted in the processing tank T. A heating / cooling pipe 20 is arranged at the inner bottom of the processing tank T, and in the case of heating, steam of 100 to several tens of degrees Celsius is supplied from the boiler B. In the case of cooling, cooling water in the cooling water tank 18 is supplied. The mixed solution of methylene chloride and water may be directly injected into the processing tank T, or may be supplied to the processing tank T in a mixed vapor state in the spare tank portion. In the embodiment shown in FIG. 1, the mixed liquid is supplied to the inside of the processing tank T.

In the mixed liquid state, steam of 100 to several tens of degrees Celsius is supplied from the boiler B to the heating / cooling pipe 20 with the mixed liquid being injected to the extent that the heating / cooling pipe 20 is immersed. Not only methylene chloride having a boiling point of 40 ° C., but also water becomes steam. In the present invention,
As shown in FIG. 6, the chlorine-based organic solvent and water, or methylene chloride and water, or a mixed liquid obtained by adding a surface active agent to the surface of the alloy does not extend to the bottom of the mounting table 26 even if the liquid level is the maximum. W is not immersed in the mixed solution. To the end, the alloy or the ceramics W absorbs the vapor of the mixed liquid for processing.

Next, referring to FIG. 1, the basic construction of the method for producing a superconducting alloy or superconducting ceramics of the present invention will be described. The equipment mainly comprises a treatment tank T and a mixed liquid tank 14, and inside the mixed liquid tank 14, a chlorine-based organic solvent and water, methylene chloride and water, or methylene chloride and water and a surfactant are mixed. The mixed liquid thus prepared is added. Boiler B also supplies steam into the pipe,
As described above, the mixed liquid is vaporized, and the compressor C applies pressure when returning the mixed liquid inside the processing tank T to the mixed liquid tank 14 after the processing is completed.

The vacuum pump P, after pushing out the mixed liquid, remains in the processing tank T and in the tissue voids of the alloy or ceramics W, the chlorine-based organic solvent and water, or the methylene chloride and water, or the methylene. It sucks vapors of chloride, water and surfactant. Since the sucked vapor cannot be discharged into the atmosphere, it is cooled and liquefied in the condenser 16 and returned to the mixed liquid tank 14 from the portion of the condenser pipe 21. The chiller 15 cools the cooling water inside the condenser 16. Further, a filter 19 is provided to filter impurities such as dust in the mixed solution extruded from the processing tank T by the compressor C. The cooling water tank 17 is a pan for cooling water used for liquefying the mixed liquid vapor.

An electromagnetic valve is arranged in each part. The electromagnetic valve is configured to open and close at regular time intervals by an automatic control device, and the process steps are "degassing", "mixed liquid feeding", "processing", "mixed liquid cooling", "mixing". Liquid tank return ”,“ Mixed liquid vapor recovery ”,
As shown in FIG. 2, the opening / closing operation is automatically performed in the order of “collection of mixed liquid in condenser”. At the same time, compressor C
The boiler B, the vacuum pump P, and the chiller 15 are automatically stopped. One stroke of this process is configured to be completed in 5 to 24 hours. Next, FIG. 2 shows the state of the electromagnetic valve in each step of the method for producing a superconducting alloy or superconducting ceramic. First, in the process of "degassing", the vacuum pump P is driven. Then, the electromagnetic valve 1 of the circuit that connects the vacuum pump P and the condenser 16 is opened, and the electromagnetic valve 3 that connects the condenser 16 and the processing tank T is also opened. All other solenoid valves are closed. As a result, the inside of the processing tank T becomes a vacuum of about 50 Torr, and the air in the alloy or the ceramics W is drawn out.

Next, in the "mixed liquid feeding" step, the electromagnetic valve 4 connecting the processing tank T and the mixed liquid tank 14 is opened and the other electromagnetic valves are closed. As a result, the mixed solution tank 14 and the processing tank T are arranged at substantially the same level, so that the mixed solution is treated so that the mixed solution tank 14 and the processing tank T are at the same level.
Move in.

Next, in the process of "processing", the electromagnetic valve 7 between the boiler B and the processing tank T and the electromagnetic valve 9 connecting the drain from the processing tank T to the drain are opened, and the other electromagnetic valves are closed. It As a result, the high-heat steam from the boiler B is supplied to the heating / cooling pipe 20 in the processing tank T, and the mixed liquid in the processing tank T becomes methylene chloride vapor, water vapor, and surfactant vapor, and the alloy or Ceramic W Penetrates into voids. This "processing" step is performed for about 6 hours.

Next, the process of "mixed liquid cooling" will be described. In this case, the electromagnetic valve 8 that connects the cooling water tank 18 and the processing tank T, the processing tank T, and the cooling water tank 17 are connected.
The electromagnetic valve 10 that communicates with is opened. The other solenoid valve is closed. As a result, the cooling water passes through the heating / cooling pipe 20 and the inside of the processing tank T becomes 40 ° C. or lower, which is the boiling point of methylene chloride, so that both methylene chloride and steam return to the chemical liquid.

Next, the process of "returning the mixed liquid tank" will be described. In this case, the electromagnetic valve 2 is opened to release the air in the processing tank T, the electromagnetic valve 5 under the processing tank T and the electromagnetic valve 6 that connects the compressor C and the processing tank T are opened, and the compressor C is opened. Driven. In addition, the electromagnetic valve 12 between the filter 19 and the mixed liquid tank 14
And an electromagnetic valve 13 for communicating the mixed liquid tank 14 with the atmosphere
Opens. As a result, a certain amount of pressure is applied to the processing tank T, so that the liquefied mixed liquid is pushed back into the mixed liquid tank 14.

Next, the process of "collection of vapor mixture in tank" will be described. In this case, the vacuum pump P is driven. Then, the electromagnetic valve 1 that connects the vacuum pump P and the capacitor 16 and the electromagnetic valve 3 that connects the capacitor 16 and the processing tank T are opened. The other solenoid valve is closed. In this state, the vacuum pump P collects the vapor of methylene chloride that has penetrated into the processing tank T and the tissue voids of the alloy or the ceramic W. The degree of vacuum at this time is lowered to about 200 Torr. Next, in the process of “collecting the mixed liquid inside the condenser”, the electromagnetic valve 2 communicating with the atmosphere, the condenser pipe 21, and the mixed liquid tank 1
The electromagnetic valve 11 communicating with 4 is opened. As a result, the mixed liquid such as methylene chloride accumulated inside the condenser pipe 21 of the condenser 16 can be collected in the mixed liquid tank 14. Each of these steps is completed within 5 to 24 hours.

Next, referring to FIG. 8, a sectional view of the inside of the processing tank T in the processing state will be described. Below the inside of the processing tank T, a heating / cooling pipe 20 is arranged,
A mounting table 26 is movably arranged above the heating / cooling pipe 20. The alloy or ceramics W is placed on the placing table 26. The liquid level of the mixed liquid of water Wa, the surfactant liquid S, and the methylene chloride solution Me is higher than that of the heating / cooling pipe 20, but the alloy or the ceramics W on the mounting table 26 is not soaked. It is injected to reach the liquid level.

Since the specific gravity of the water Wa is 1.00 and the specific gravity of the surfactant liquid S is 1.04, the liquid levels are almost the same, and the surfactant liquid S dissolves in the water Wa and becomes integrated. As shown in FIG. 8, a liquid layer of water Wa + surfactant liquid S is formed. On the other hand, a methylene chloride solution Me
Has a specific gravity of 1.33 and does not dissolve in water Wa,
A layer is formed under the layer of water Wa + surfactant liquid S. Then, when steam heated to 160 ° C. is supplied to the heating / cooling pipe 20 arranged in the layer of water Wa + surfactant liquid S, the temperature around the heating / cooling pipe 20 rises. The heating / cooling pipe 20 is made of water Wa + surfactant liquid S.
Are arranged in the layer of the above, and the temperature of the portion is raised first.

When the temperature of the heating / cooling pipe 20 gradually rises and reaches about 40 ° C., the methylene chloride solution Me
Reaches the boiling point and changes to methylene chloride vapor, water Wa
+ Passes through the layer of the surfactant liquid S as bubbles to reach the alloy or ceramics W, and the alloy or ceramics W
Invades into the tissue void of. In the case of alloy or ceramic W, it is heated to about 70 ° C., and the vapor of methylene chloride penetrates through the liquid of water Wa and the surfactant liquid S,
The processing is continued in such a state that the alloy or the ceramic W is reached. Then, while the methylene chloride Me passes through the water Wa and the surfactant liquid S, Cl ₂ (chlorine gas) generated from methylene chloride is absorbed in the water Wa to suppress the generation of chlorine gas which adversely affects the treatment. ,
It promotes the generation of ions. Further, in a state where the surfactant liquid S is added to the methylene chloride vapor,
It penetrates into the tissue voids of the alloy or ceramic W. This makes it possible to improve the breakage of elution.

As described above, the water Wa, the surfactant solution S, and the methylene chloride solution Me are mixed as a mixed solution and heated by the heating / cooling pipe 20, whereby the vapor of the methylene chloride Me forms an interface with the water Wa. After passing through the activator liquid S, it is evaporated in the processing tank T, so that Cl ₂ is reduced. Chlorine gas damages alloys and ceramics, so it can be reduced and a large amount of ions can be generated. The vapor of the methylene chloride uniformly penetrates the perforations of the alloy or ceramic W.
Further, since the surfactant liquid S is mixed, it is possible to generate a large amount of methylene chloride vapor at a low temperature, so that it is not necessary to heat the treatment tank T to a high temperature for treatment.

[0037]

Since the present invention is constructed as described above, it has the following effects. First, as in the past, 5
By eliminating the sintering process at 00 ° C. to 600 ° C., or by using it in combination, the sintering process is performed in a short time, or by arranging it in a pretreatment process rather than the process of the present invention, finally, the superconductor can be obtained at a low temperature. Since it can be manufactured, the manufactured superconductor can be highly reproducible. Secondly, since it is possible to expose the alloy or ceramics in a gas or vapor state such as chlorine-based organic solvent, methylene chloride, water vapor, etc., there is no partial consistency such as in the sintering or pressure stroke. Since it can be made to act more uniformly rather than by a processing method, it is possible to form a uniform superconductor over the entire alloy or ceramics.

[Brief description of drawings]

FIG. 1 is a basic configuration drawing of a method for producing a superconducting alloy or superconducting ceramics of the present invention.

FIG. 2 is a drawing showing steps and procedures of a method for producing a superconducting alloy or a superconducting ceramic by opening and closing a valve mechanism.

FIG. 3 is a side view of a processing tank T, a lid 22, and a mounting table 26.

FIG. 4 is a side view of the processing tank T with a lid 22 closed.

FIG. 5 is a front view of a lid body 22.

FIG. 6 is a front sectional view of a processing tank T.

FIG. 7 is a front view showing a state in which an alloy or ceramics W is mounted on the mounting table 26.

FIG. 8 is a sectional view of the inside of the processing tank T in a processing state.

[Explanation of symbols]

 Me Methylene chloride solution C Compressor B Boiler T Treatment tank P Vacuum pump W Alloy or ceramics Wa Water S Surfactant liquid 14 Mixed liquid tank 15 Chiller 16 Condenser 18 Cooling water tank 21 Condenser pipe

Claims (5)

[Claims] 1. A chlorine-based organic solvent and water are mixed and heated,
By generating steam and steam of the chlorine-based organic solvent and filling the steam and steam of the chlorine-based organic solvent in a treatment tank in which an alloy or ceramic is sealed, and exposing the alloy or ceramic to the steam, superconductivity Method for producing alloy or superconducting ceramics. 2. A methylene chloride solution and water are mixed and heated to generate methylene chloride vapor and water vapor,
A method for producing a superconducting alloy or a superconducting ceramic by filling the treatment tank in which the alloy or the ceramic is filled with the methylene chloride vapor and steam and exposing the alloy or the ceramic to the vapor. 3. A methylene chloride solution, water and a surfactant liquid are mixed to form a mixed liquid, and the mixed liquid is heated to generate methylene chloride vapor, steam and a surfactant vapor, and the mixed vapor is alloyed. Alternatively, a method for producing a superconducting alloy or a superconducting ceramic by filling a processing tank in which the ceramic is sealed and exposing the alloy or the ceramic to the mixed vapor. 4. The method for producing a superconducting alloy or superconducting ceramics according to claim 2 or 3, wherein the heating temperature of the mixed solution of the methylene chloride solution and water is in the range of 70 to 140 ° C. Manufacturing method of superconducting ceramics. 5. The method for producing a superconducting alloy or superconducting ceramic according to claim 1, 2 or 3, wherein the treatment tank is placed in a vacuum state and the alloy or ceramic is treated in a deaerated state. Manufacturing method of superconducting ceramics.