GB950767A - Surface hardening of ferrous materials or nickel-base or cobalt-base alloys - Google Patents
Surface hardening of ferrous materials or nickel-base or cobalt-base alloysInfo
- Publication number
- GB950767A GB950767A GB3263061A GB3263061A GB950767A GB 950767 A GB950767 A GB 950767A GB 3263061 A GB3263061 A GB 3263061A GB 3263061 A GB3263061 A GB 3263061A GB 950767 A GB950767 A GB 950767A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boron
- base
- nickel
- ferro
- 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.)
- Expired
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
- C23C8/60—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 solids, e.g. powders, pastes
- C23C8/62—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 solids, e.g. powders, pastes only one element being applied
- C23C8/68—Boronising
- C23C8/70—Boronising of ferrous surfaces
-
- 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
- C23C8/60—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 solids, e.g. powders, pastes
- C23C8/62—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 solids, e.g. powders, pastes only one element being applied
- C23C8/68—Boronising
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
- Powder Metallurgy (AREA)
Abstract
Ferrous, nickel or cobalt based alloys are heated in contact with a fine powder containing at least 8% boron at a temperature above 700 DEG C. in an atmosphere of hydrogen or cracked ammonia to form a hard boride layer. The powder may be boron, a boron compound or a boron alloy such as ferro boron. In an example a mixture of 70% ferro boron and 30% alumina is used and mild steel components packed in the mixture are heated to 900 DEG C. in cracked ammonia.ALSO:Ferrous nickel or cobalt based alloys are heated in contact with a fine powder containing at least 8% boron at a temperature above 700 DEG C. in an atmosphere of hydrogen or cracked ammonia. The powder may be boron, a boron compound or a boron alloy such as ferro-boron. In an example a mixture of 70% ferro-boron and 30% alumina is used and mild steel components packed in the mixture are heated to 900 DEG C. in cracked ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3263061A GB950767A (en) | 1961-09-12 | 1961-09-12 | Surface hardening of ferrous materials or nickel-base or cobalt-base alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3263061A GB950767A (en) | 1961-09-12 | 1961-09-12 | Surface hardening of ferrous materials or nickel-base or cobalt-base alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB950767A true GB950767A (en) | 1964-02-26 |
Family
ID=10341626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3263061A Expired GB950767A (en) | 1961-09-12 | 1961-09-12 | Surface hardening of ferrous materials or nickel-base or cobalt-base alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB950767A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4224382A (en) * | 1979-01-26 | 1980-09-23 | Union Carbide Corporation | Hard facing of metal substrates |
| US4251297A (en) | 1976-08-16 | 1981-02-17 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing magnetic head using boronizing treatment |
| WO2018169834A1 (en) * | 2017-03-14 | 2018-09-20 | Bwt Llc | Method for using boronizing reaction gases as a protective atmosphere during boronizing, and reaction gas neutralizing treatment |
| US11192792B2 (en) | 2017-03-14 | 2021-12-07 | Bwt Llc | Boronizing powder compositions for improved boride layer quality in oil country tubular goods and other metal articles |
-
1961
- 1961-09-12 GB GB3263061A patent/GB950767A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4251297A (en) | 1976-08-16 | 1981-02-17 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing magnetic head using boronizing treatment |
| US4224382A (en) * | 1979-01-26 | 1980-09-23 | Union Carbide Corporation | Hard facing of metal substrates |
| WO2018169834A1 (en) * | 2017-03-14 | 2018-09-20 | Bwt Llc | Method for using boronizing reaction gases as a protective atmosphere during boronizing, and reaction gas neutralizing treatment |
| US10870912B2 (en) | 2017-03-14 | 2020-12-22 | Bwt Llc | Method for using boronizing reaction gases as a protective atmosphere during boronizing, and reaction gas neutralizing treatment |
| US11192792B2 (en) | 2017-03-14 | 2021-12-07 | Bwt Llc | Boronizing powder compositions for improved boride layer quality in oil country tubular goods and other metal articles |
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