Patent FR406424A successfully refreshed from Google Patents.
EP0335213A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method for producing thermoelectric elements
Assignee: Idemitsu Petrochemical Co Ltd
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Filing: 1989-03-18
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Granted: —
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Expires: 2009-03-18
Abstract
Abstract Thermoelectric elements with excellent thermoelectric characteristics such as Seebeck coefficient thermoelectromotive force and thermal conductivity can be produced by molding a powder of metal or metal alloy as the raw material and then sintering; by using as such raw material, ultra fine powders containing Fe and Si as main components and having a mean particle diameter of 50 to 5,000 Å.
Inventors
- 👤 Tokiai Takeo
- 👤 Uesugi Takasi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 17:06
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/01; C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; B; B22; B22F; B22F9/00; B22F9/02; B22F9/04; B22F9/06; B22F9/08; B22F9/082; B22F9/12; H10N10/80; H10N10/85; H10N10/851; H10N10/854; H10N10/8556; B22F2999/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
52 words
In a method for producing thermoelectric elements by molding powders of metal or metal alloy as the raw material and then sintering, the improvement which comprises using ultra fine powders containing Fe and Si as main components and having a mean particle diameter of 50 to 5,000 Å as the raw material.
Claim 2
Dependent Claim
52 words
In a method for producing thermoelectric elements by molding powders of metal or metal alloy as the raw material and then sintering, the improvement which comprises using ultra fine powders containing Fe and Si as main components and having a mean particle diameter of 50 to 5,000 Å as the raw material.
Claim 3
Dependent Claim
28 words
The method as claimed in Claim 1 wherein the ultra fine powders are obtained by subjecting the metal or metal alloy as the raw material to plasma treatment.
Claim 4
Dependent Claim
22 words
The method as claimed in Claim 1 wherein the ultra fine powders are subjected to heat treatment in a reducing gas atmosphere.
Claim 5
Dependent Claim
21 words
The method as claimed in Claim 1 wherein the ultra fine powders are mixed phase of semiconductor phase and metal phase.
Claim 6
Dependent Claim
67 words
In a method for producing thermoelectric elements by molding powders of metal or metal alloy as the raw material and then sintering, the improvement which comprises using mixed powders of ultra fine powders containing Fe and Si as main components and having a mean particle diameter of 50 to 5,000 Å and powders having a mean particle diameter of 1 to 5µ m, as the raw material.
Claim 7
Dependent Claim
67 words
In a method for producing thermoelectric elements by molding powders of metal or metal alloy as the raw material and then sintering, the improvement which comprises using mixed powders of ultra fine powders containing Fe and Si as main components and having a mean particle diameter of 50 to 5,000 Å and powders having a mean particle diameter of 1 to 5µ m, as the raw material.
Claim 8
Dependent Claim
21 words
The method as claimed in Claim 5 wherein the ultra fine powders are mixed phase of semiconductor phase and metal phase.
Claim 9
Dependent Claim
28 words
The method as claimed in Claim 5 wherein the ultra fine powders are obtained by subjecting the metal or metal alloy as the raw material to plasma treatment.
Claim 10
Dependent Claim
22 words
The method as claimed in Claim 5 wherein the ultra fine powders are subjected to heat treatment in a reducing gas atmosphere.
Claim 11
Dependent Claim
38 words
A thermoelectric element comprising a sintered material containing ultra fine powders obtained by subjecting a raw material containing Fe and Si as main components to plasma treatment and having a mean particle diameter of 50 to 5,000 Å.
Claim 12
Dependent Claim
38 words
A thermoelectric element comprising a sintered material containing ultra fine powders obtained by subjecting a raw material containing Fe and Si as main components to plasma treatment and having a mean particle diameter of 50 to 5,000 Å.
References Cited (Backward Citations)
No citation records indexed.
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