GB414108A - Improvements in or relating to the hardening of metals and alloys - Google Patents
Improvements in or relating to the hardening of metals and alloysInfo
- Publication number
- GB414108A GB414108A GB2700/33A GB270033A GB414108A GB 414108 A GB414108 A GB 414108A GB 2700/33 A GB2700/33 A GB 2700/33A GB 270033 A GB270033 A GB 270033A GB 414108 A GB414108 A GB 414108A
- Authority
- GB
- United Kingdom
- Prior art keywords
- articles
- paste
- metals
- hardened
- coated
- 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
- C23C8/64—Carburising
- C23C8/66—Carburising 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)
- Other Surface Treatments For Metallic Materials (AREA)
- Catalysts (AREA)
Abstract
Articles of metals and alloys are hardened by coating them with a layer comprising carbon containing bodies which are activated at high temperatures, together with finely divided catalytic metals, alkali or alkaline earth compounds of organic acids or carbonic acid and free alkali dissolved or suspended in water or other liquids, heating the coated articles to a temperature above the upper critical point and then quenching. The materials are made up into a paste into which the articles are dipped or they may be painted with the paste. The coated article may be maintained at the temperature referred to above for a sufficient time to produce the desired thickness of the hardened layer before quenching. Compounds of the catalytic metals may be used instead of the metals. In an example, 100 parts of coke, 20 of nickel hydroxide, 15 of barium oxalate, 10 of strontium carbonate and 10 of potassium by dioxide are intimately mixed and made into a paste in 150 parts of water containing 5 per cent of gluten. The articles are coated with the paste and heated to 950 DEG C. Iron or steel articles may be case-hardened by the process or copper alloys, such as bronzes, hardened.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE414108X | 1932-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB414108A true GB414108A (en) | 1934-07-27 |
Family
ID=6446943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2700/33A Expired GB414108A (en) | 1932-07-16 | 1933-01-27 | Improvements in or relating to the hardening of metals and alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB414108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2537471C2 (en) * | 2013-01-11 | 2015-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Курская государственная сельскохозяйственная академия имени профессора И.И. Иванова Министерства сельского хозяйства Российской Федерации | Method of hardening electrodeposited iron-chromium coatings by carbonisation |
-
1933
- 1933-01-27 GB GB2700/33A patent/GB414108A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2537471C2 (en) * | 2013-01-11 | 2015-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Курская государственная сельскохозяйственная академия имени профессора И.И. Иванова Министерства сельского хозяйства Российской Федерации | Method of hardening electrodeposited iron-chromium coatings by carbonisation |
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