GB1031602A - Formation of coatings on ferrous metal substrates - Google Patents
Formation of coatings on ferrous metal substratesInfo
- Publication number
- GB1031602A GB1031602A GB3915763A GB3915763A GB1031602A GB 1031602 A GB1031602 A GB 1031602A GB 3915763 A GB3915763 A GB 3915763A GB 3915763 A GB3915763 A GB 3915763A GB 1031602 A GB1031602 A GB 1031602A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- coating
- chromising
- compacted
- inch
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
-
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step
- C23C10/54—Diffusion of at least chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
A stainless steel coating is formed on a ferrous substrate by applying a coating of Ni powder to the substrate compacting the powder and finally diffusing Cr into the coating at a temperature high enough to allow interdiffusion of the Ni, Fe and Cr. In a modification a coating of Ni and Cr powder may be applied, compacted and then heated to effect interdiffusion. It is preferred to add Fe powder with the Ni powder, the mixture containing 10%-20% Ni and the powder being applied dry or wet, as a paste or slurry from a metering device or by electrostatic or electrophonetic deposition. The coating is compacted by rolling and is sintered at 750 DEG C. in hydrogen or cracked ammonia prior to chromising. The chromising process is the conventional halide pack or gas process at 800 DEG -1400 DEG C. In addition to Cr, Fe may also be deposited by using Fe/Cr in the diffusing pack. In the modified process a powder coating of a Fe/Ni alloy and Cr powder is preferred and after compacting, diffusion is effected at 1000 DEG C. for 6 hours in hydrogen or cracked ammonia. The metal powders should have a particle size of 5-100 microns and the ferrous substrate a maximum C content of 0.15%. The chromising inter-diffusion step is preferably carried out using H.F. heating which causes less grain growth. The final coating has a thickness of 0.001 inch -0.004 inch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3915763A GB1031602A (en) | 1963-10-04 | 1963-10-04 | Formation of coatings on ferrous metal substrates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3915763A GB1031602A (en) | 1963-10-04 | 1963-10-04 | Formation of coatings on ferrous metal substrates |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1031602A true GB1031602A (en) | 1966-06-02 |
Family
ID=10407981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3915763A Expired GB1031602A (en) | 1963-10-04 | 1963-10-04 | Formation of coatings on ferrous metal substrates |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1031602A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064542A1 (en) * | 1980-11-17 | 1982-11-17 | Turbine Metal Technology Inc. | Improved interdispersed phase coatings method |
FR2529911A1 (en) * | 1982-07-08 | 1984-01-13 | Snecma | Process and device for the production of metallic protective coatings |
-
1963
- 1963-10-04 GB GB3915763A patent/GB1031602A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064542A1 (en) * | 1980-11-17 | 1982-11-17 | Turbine Metal Technology Inc. | Improved interdispersed phase coatings method |
EP0064542A4 (en) * | 1980-11-17 | 1983-11-21 | Turbine Metal Technology Inc | Improved interdispersed phase coatings method. |
FR2529911A1 (en) * | 1982-07-08 | 1984-01-13 | Snecma | Process and device for the production of metallic protective coatings |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1135015A (en) | A process for depositing a protective coating on metal | |
DE69903798T2 (en) | METHOD FOR APPLYING A CORROSION-RESISTANT COATING | |
GB982766A (en) | Process and apparatus for decomposing gaseous metal compounds | |
GB1500109A (en) | Process for producing sintered metal coatings on metal | |
US3231408A (en) | Nuclear fuel materials | |
US3839026A (en) | PROCESS FOR THE PRODUCTION OF METAL STRIP FROM Fe POWDER | |
GB1163766A (en) | Process for Forming Sintered Metal Coatings | |
GB1212681A (en) | Process for the production of metal strip from powdered metal | |
GB1031602A (en) | Formation of coatings on ferrous metal substrates | |
EP0260101B1 (en) | Production of flat products from particulate material | |
GB1077735A (en) | Coatings for metallic materials | |
US4569822A (en) | Powder metal process for preparing computer disk substrates | |
GB746248A (en) | Process of forming composite strips of backing and bearing metals | |
GB1014383A (en) | Hard metal deposits | |
GB716604A (en) | Hot-strength corrosion resistant compounds and bodies and their production | |
GB1031678A (en) | Improvements in or relating to cermets | |
JPS5613411A (en) | Manufacture of magnetic powder of metallic iron | |
Ferrier et al. | Fundamental Study of Galvanizing | |
JPS56127766A (en) | Powder-form for flame spray coating material | |
US2991191A (en) | Method of applying a protective coating to metal | |
DE1936243A1 (en) | Method of manufacturing a metal element | |
GB1512988A (en) | Process for forming a coating on a metallic component | |
Li et al. | A Study of the Compactibility of Metallized Ceramic Powder and Mixed Ceramic/Metallic Powders | |
JPS55152103A (en) | Heat-resistant zirconium oxide-base cermet powder and manufacture of the same | |
Devillard et al. | Evaluation of Ti--6 Al--4 V Powder Compacts Fabricated by the PSV Process |