EP0171918A1
Expired / Lapsed
EP
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A process for producing a PbMo6S8 type compound superconductor
Assignee: Mitsubishi Electric Corp
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Filing: 1985-07-09
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Granted: —
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Expires: 2005-07-09
Abstract
Abstract The present invention is designated to solve such problems whereby a process for producing a PbMo 6 S 8 type compound superconductor excellent in stoichiometric composition and electric characteristics can be provided. In addition to the above, another purpose of the present invention is to provide a process for producing a PbMo 6 S 8 type compound superconductor in wire form with stable electrical characteristics. These purposes are acheived by filling into a barrier material at least one of a PbMo 6 S 8 type compound and a mixed material containing Pb, Mo and S as components in such proportions that a PbMo 6 S 8 type compound is finally - obtained, forming the resulting composite and thermally treating this reduced cross-section composite under pressure at a temperature above 800°C.
Inventors
- 👤 Yoshio Room No. 36 Kubo
- 👤 Kiyoshi Yoshizaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 13:16
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/80; H10N60/85; H10N60/01; H10N60/0212; Y; Y10; Y10S; Y10S505/00; Y10S505/80; Y10S505/81; Y10S505/815
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
A process for producing a PbMo 6 S 8 type compound superconductor comprising the three steps of: a. obtaining a composite by filling into a barrier material at least one of PbMo s S 8 type compound and a mixed material containing Pb, Mo and S as components in such proportions that a PbMo 6 S 8 type compound is finally obtained, said components being selected from Mo, Mo sulfides, Pb, Pb sulfides and S; b. processing to reduce the cross section of said composite, and c. thermally treating under pressure said reduced cross section composite at a temperature above 800°C.
Claim 2
Dependent Claim
101 words
A process for producing a PbMo 6 S 8 type compound superconductor comprising the three steps of: a. obtaining a composite by filling into a barrier material at least one of PbMo s S 8 type compound and a mixed material containing Pb, Mo and S as components in such proportions that a PbMo 6 S 8 type compound is finally obtained, said components being selected from Mo, Mo sulfides, Pb, Pb sulfides and S; b. processing to reduce the cross section of said composite, and c. thermally treating under pressure said reduced cross section composite at a temperature above 800°C.
Claim 3
Dependent Claim
23 words
A process for producing PbMo 6 S 8 type compound superconductors according to Claim 1 wherein the thermal treatment temperature is above 900°C.
Claim 4
Dependent Claim
23 words
A process for producing PbMo 6 S 8 type compound superconductors according to Claim 1 wherein the pressure is above 100kg/cm 2 .
Claim 5
Dependent Claim
23 words
A process for producing PbMo 6 S 8 type compound superconductors according to Claim 1 wherein the pressure is above 1500kg/cm 2 .
Claim 6
Dependent Claim
23 words
A process for producing PbMo 6 S 8 type compound superconductors according to Claim 2 wherein the pressure is above l500kg/cm 2 .
Claim 7
Dependent Claim
65 words
A process for producing PbMo 6 S 8 type compound superconductors according to Claim 1 wherein the mixed material filled into the barrier material is a mixed material obtained by mixing raw materials containing Mo, Pb and Mo sulfide having a higher sulfur isolation initiating temperature than that of MoS 2 in such proportions that a PbMo 6 S 8 type compound is finally obtained.
Claim 8
Dependent Claim
35 words
A process for producing PbMo 6 S 8 type compound superconductors according to Claim 6 wherein the Mo sulfide material is Mo2S3, the sulfur isolation initiating temperature of which is higher than that of MOS2.
Claim 9
Dependent Claim
152 words
A process for producing PbMo 6 S 8 type compound superconductor comprising the four steps of: a. obtaining a composite by filling into a barrier material at least one of PbMo 6 S 8 type compound and a mixed material containing Pb, Mo.and S as components in such proportions that a PbMo 6 S 8 type compound is finally obtained, said components being selected from Mo, Mo sulfides, Pb, Pb sulfides and S; b. processing to reduce the cross section of said composite; c. thermally treating under pressure said reduced cross section composite at a temperature above 800°C; and d. putting a common electric conductive metal that is a good thermal and electrical conductor on said thermally treated composite. 9 A process for producing PbMo 6 S 8 type compound superconductor according to Claim 8 wherein the thermal treatment is carried out with a pressure above 1500kg/cm2 at a temperature above 900°C.
References Cited (Backward Citations)
EP0138719A2
Cited
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