FR2468876A1 - Procede et appareil de mesure de l'epaisseur d'une couche superficielle dans une piece metallique - Google Patents
Procede et appareil de mesure de l'epaisseur d'une couche superficielle dans une piece metallique Download PDFInfo
- Publication number
- FR2468876A1 FR2468876A1 FR8023216A FR8023216A FR2468876A1 FR 2468876 A1 FR2468876 A1 FR 2468876A1 FR 8023216 A FR8023216 A FR 8023216A FR 8023216 A FR8023216 A FR 8023216A FR 2468876 A1 FR2468876 A1 FR 2468876A1
- Authority
- FR
- France
- Prior art keywords
- thickness
- measuring
- potential
- layer
- values
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002344 surface layer Substances 0.000 title abstract description 26
- 238000000034 method Methods 0.000 title abstract description 21
- 238000009826 distribution Methods 0.000 abstract description 15
- 239000002184 metal Substances 0.000 abstract description 12
- 229910052751 metal Inorganic materials 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000012795 verification Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 27
- 230000014509 gene expression Effects 0.000 description 15
- 239000000203 mixture Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005256 carbonitriding Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- 101150097504 LHX1 gene Proteins 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT69132/79A IT1119559B (it) | 1979-10-31 | 1979-10-31 | Procedimento e dispositivo per la misura della profondita di uno strato superficiale di un pezzo metallico avente caratteristiche fisiche differenti da quelle della parte rimamente |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2468876A1 true FR2468876A1 (fr) | 1981-05-08 |
| FR2468876B3 FR2468876B3 (Direct) | 1983-04-08 |
Family
ID=11311415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8023216A Granted FR2468876A1 (fr) | 1979-10-31 | 1980-10-30 | Procede et appareil de mesure de l'epaisseur d'une couche superficielle dans une piece metallique |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5673305A (Direct) |
| DE (1) | DE3040926A1 (Direct) |
| FR (1) | FR2468876A1 (Direct) |
| GB (1) | GB2062241B (Direct) |
| IT (1) | IT1119559B (Direct) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2556335B2 (ja) * | 1987-09-08 | 1996-11-20 | 住友特殊金属 株式会社 | 電磁変換素子用複合基板のＩｎＳｂ単結晶ウエハ−厚み測定方法 |
| GB2274712B (en) * | 1993-01-22 | 1997-01-15 | Brecknell Willis & Co Ltd | Non-destructive testing of composite conductor rails |
| US7443177B1 (en) * | 2005-05-31 | 2008-10-28 | Iowa State University Research Foundation, Inc. | Characterization of conductor by alternating current potential-drop method with a four-point probe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1895643A (en) * | 1929-03-05 | 1933-01-31 | Standard Oil Co California | Method of and apparatus for measuring the thickness of metal |
| US2854626A (en) * | 1954-12-31 | 1958-09-30 | Davidson Martin | Plating thickness indicator |
| US3365663A (en) * | 1962-06-29 | 1968-01-23 | Shin Mitsubishi Jukogyo Kk | Thickness measuring instrument for electro-conductive objects and associated methods |
| US3721897A (en) * | 1968-03-14 | 1973-03-20 | Aka Ab Apparatkemiska | Wall thickness and temperature monitoring apparatus for boiler tubes |
-
1979
- 1979-10-31 IT IT69132/79A patent/IT1119559B/it active
-
1980
- 1980-09-24 GB GB8030735A patent/GB2062241B/en not_active Expired
- 1980-10-30 JP JP15297380A patent/JPS5673305A/ja active Pending
- 1980-10-30 FR FR8023216A patent/FR2468876A1/fr active Granted
- 1980-10-30 DE DE19803040926 patent/DE3040926A1/de not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1895643A (en) * | 1929-03-05 | 1933-01-31 | Standard Oil Co California | Method of and apparatus for measuring the thickness of metal |
| US2854626A (en) * | 1954-12-31 | 1958-09-30 | Davidson Martin | Plating thickness indicator |
| US3365663A (en) * | 1962-06-29 | 1968-01-23 | Shin Mitsubishi Jukogyo Kk | Thickness measuring instrument for electro-conductive objects and associated methods |
| US3721897A (en) * | 1968-03-14 | 1973-03-20 | Aka Ab Apparatkemiska | Wall thickness and temperature monitoring apparatus for boiler tubes |
Non-Patent Citations (1)
| Title |
|---|
| EXBK/63 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2468876B3 (Direct) | 1983-04-08 |
| IT1119559B (it) | 1986-03-10 |
| GB2062241B (en) | 1983-12-07 |
| DE3040926A1 (de) | 1981-09-03 |
| GB2062241A (en) | 1981-05-20 |
| IT7969132A0 (it) | 1979-10-31 |
| JPS5673305A (en) | 1981-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |