JPS55152182A - Steam treatment of iron based product - Google Patents
Steam treatment of iron based productInfo
- Publication number
- JPS55152182A JPS55152182A JP5803779A JP5803779A JPS55152182A JP S55152182 A JPS55152182 A JP S55152182A JP 5803779 A JP5803779 A JP 5803779A JP 5803779 A JP5803779 A JP 5803779A JP S55152182 A JPS55152182 A JP S55152182A
- Authority
- JP
- Japan
- Prior art keywords
- steam treatment
- iron based
- ferric oxide
- based product
- heated
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
- C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
- C23C8/18—Oxidising of ferrous surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
PURPOSE:To produce uniform thickness and dense black layer of triiron tetraoxide by a method wherein the iron based product is heated in a furnace under nonoxidizing or reducing atmosphere and treated with high temperature steam to prevent formation of ferric oxide which used to occur in conventional method. CONSTITUTION:In steam treatment of the iron or iron based alloy products, the products are heated to about 350 deg.C in the furnace under innert gas such as N2 or reducing atmosphere such as NH3, and high temperature steam is introduced for steam treatment. This prevents formation of reddish brown ferric oxide as formed in conventional method, and intead forms dense black layer of triiron tetraoxide having uniform thickness over the entire surface. For example, this method applied to a drill gives an oxide layer whose thickness (dotted line) is much more uniform than that (solid line) obtained in air furnace, and ferric oxide cannot be found.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5803779A JPS55152182A (en) | 1979-05-14 | 1979-05-14 | Steam treatment of iron based product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5803779A JPS55152182A (en) | 1979-05-14 | 1979-05-14 | Steam treatment of iron based product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55152182A true JPS55152182A (en) | 1980-11-27 |
Family
ID=13072729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5803779A Pending JPS55152182A (en) | 1979-05-14 | 1979-05-14 | Steam treatment of iron based product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55152182A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522020A1 (en) * | 1982-02-22 | 1983-08-26 | Rca Corp | PROCESS FOR DARKENING SURFACES OF METAL ELEMENTS, SUCH AS IN PARTICULAR PERFORATED MASKS OF COLOR IMAGE TUBES |
| FR2532108A1 (en) * | 1982-08-20 | 1984-02-24 | Videocolor Sa | PROCESS FOR PREPARING THE FERROUS PARTS OF A COLOR TELEVISION TUBE AND AN OVEN FOR CARRYING OUT SUCH A METHOD |
| WO2011088266A1 (en) | 2010-01-13 | 2011-07-21 | Irwin Industrial Tool Company | Coated hole cutter |
-
1979
- 1979-05-14 JP JP5803779A patent/JPS55152182A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522020A1 (en) * | 1982-02-22 | 1983-08-26 | Rca Corp | PROCESS FOR DARKENING SURFACES OF METAL ELEMENTS, SUCH AS IN PARTICULAR PERFORATED MASKS OF COLOR IMAGE TUBES |
| FR2532108A1 (en) * | 1982-08-20 | 1984-02-24 | Videocolor Sa | PROCESS FOR PREPARING THE FERROUS PARTS OF A COLOR TELEVISION TUBE AND AN OVEN FOR CARRYING OUT SUCH A METHOD |
| US4714497A (en) * | 1982-08-20 | 1987-12-22 | Videocolor | Process for the preparation of ferrous parts of a color television tube and furnace for operating such a process |
| WO2011088266A1 (en) | 2010-01-13 | 2011-07-21 | Irwin Industrial Tool Company | Coated hole cutter |
| EP2523769A1 (en) * | 2010-01-13 | 2012-11-21 | Irwin Industrial Tool Company | Coated hole cutter |
| EP2523769A4 (en) * | 2010-01-13 | 2014-05-21 | Irwin Ind Tool Co | Coated hole cutter |
| US9586270B2 (en) | 2010-01-13 | 2017-03-07 | Irwin Industrial Tool Company | Coated hole cutter |
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