US3806374A - Process for boriding steel - Google Patents
Process for boriding steel Download PDFInfo
- Publication number
- US3806374A US3806374A US00234397A US23439772A US3806374A US 3806374 A US3806374 A US 3806374A US 00234397 A US00234397 A US 00234397A US 23439772 A US23439772 A US 23439772A US 3806374 A US3806374 A US 3806374A
- Authority
- US
- United States
- Prior art keywords
- boriding
- boron
- steel
- free
- carbon
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title description 21
- 229910000831 Steel Inorganic materials 0.000 title description 13
- 239000010959 steel Substances 0.000 title description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 25
- 239000000203 mixture Substances 0.000 abstract description 20
- 229910052799 carbon Inorganic materials 0.000 abstract description 15
- 239000003795 chemical substances by application Substances 0.000 abstract description 15
- 239000011148 porous material Substances 0.000 abstract description 10
- 239000012190 activator Substances 0.000 abstract description 8
- 239000003085 diluting agent Substances 0.000 abstract description 5
- 229910052796 boron Inorganic materials 0.000 description 26
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 25
- 239000010410 layer Substances 0.000 description 24
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 12
- 229910052580 B4C Inorganic materials 0.000 description 11
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 229910021538 borax Inorganic materials 0.000 description 10
- 239000004328 sodium tetraborate Substances 0.000 description 10
- 235000010339 sodium tetraborate Nutrition 0.000 description 10
- 239000000843 powder Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 8
- -1 boron halides Chemical class 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 230000003213 activating effect Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000011698 potassium fluoride Substances 0.000 description 6
- 235000003270 potassium fluoride Nutrition 0.000 description 6
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 6
- 239000003610 charcoal Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 235000002639 sodium chloride Nutrition 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 235000019270 ammonium chloride Nutrition 0.000 description 3
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 3
- 229910001632 barium fluoride Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 3
- 229910001628 calcium chloride Inorganic materials 0.000 description 3
- 235000011148 calcium chloride Nutrition 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000004673 fluoride salts Chemical class 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 239000001103 potassium chloride Substances 0.000 description 3
- 235000011164 potassium chloride Nutrition 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000011775 sodium fluoride Substances 0.000 description 3
- 235000013024 sodium fluoride Nutrition 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 229910001615 alkaline earth metal halide Inorganic materials 0.000 description 2
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 2
- 229910001626 barium chloride Inorganic materials 0.000 description 2
- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001514 alkali metal chloride Inorganic materials 0.000 description 1
- 229910001508 alkali metal halide Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 229910001622 calcium bromide Inorganic materials 0.000 description 1
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- ZLMJMSJWJFRBEC-OUBTZVSYSA-N potassium-40 Chemical compound [40K] ZLMJMSJWJFRBEC-OUBTZVSYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- LALRXNPLTWZJIJ-UHFFFAOYSA-N triethylborane Chemical compound CCB(CC)CC LALRXNPLTWZJIJ-UHFFFAOYSA-N 0.000 description 1
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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
- Y10T428/12958—Next to Fe-base component
- Y10T428/12965—Both containing 0.01-1.7% carbon [i.e., steel]
Definitions
- Variant 1 takes place without electrolysis.
- Variant 2 the deposition of boron is assisted electrolytically wherein the part to be borided is the cathode while the crucible wall or a special electrode is used as the anode.
- the anode can also consist of a boron containing material.
- the boriding with powders corresponds to the long known powder carburizing.
- the part to be treated is embedded with the boriding powder in boxes and subjected to an annealing treatment for several hours in the temperature range of 800 to 1100 C.
- the boxes normally consist of steel plate and are closed with a cover of the same material.
- the boriding powder includes the boron containing material and in many cases a diluent and activating addition.
- boron containing material there can be used amorphous boron, crystalline boron, ferroboron, boron carbide and borax as well as mixtures of these materials.
- activating additives there can be added the following compounds: potassium chloride, sodium chloride, ammonium chloride, calcium chloride and barium chloride as well as various fluorides, especially barium fluoride and magnesium fluoride.
- potassium chloride sodium chloride
- ammonium chloride calcium chloride and barium chloride
- various fluorides especially barium fluoride and magnesium fluoride.
- ammonium alkali metal and alkaline earth metal chlorides and fluorides can-be used as activating agents.
- Very hard layers are produced on the parts by the treatment.
- these consist of the compounds FeB and Fe B.
- the boron rich compound FeB is formed only if the boriding activity of the agent is sutliciently strong. Since the FeB phase is only insig- 3,806,374 Patented Apr. 23, 1974 nificantly harder than the Fe B phase but is essentially more brittle, one is frequently content with a weaker boriding activity and strives for a boriding layer which is constructed only of the compound Fe B.
- These layers possess a very high resistance to wear which is why the processes today are employed in the industry to an increasing extent for various high load prefabricated parts and tools.
- a serious deficiency of the boriding powders is that the outer zones of boriding layers produced with them are permeated more or less strongly with pores and oxidized inclusions. Inclusions are due to the fact that the powder structure contains oxygen or oxygen containing gases which have an oxidizing effect on the prefabricated parts. 0n the other hand experiments have shown that the presence of oxygen or oxygen containing gases is indispensable for the production of thicker layers. If the treatment takes place in completely sealed boxes or in a vacuum, the strength of the layer is reduced by about one half.
- boron containing materials there can be used amorphous boron, crystalline boron, ferroboron, boron carbide, borax, boric anhydride and mixtures of these materials in any proportions. These are mixed as is customary in the art with activating materials.
- activating materials set forth previously, e.g. ammonium, alkali metal and alkaline earth metal halides, e.g. ammonium chloride, potassium chloride, sodium chloride, calcium chloride, barium chloride, potassium fluoride, barium fluoride, magnesium fluoride, sodium bromide, sodium fluoride and calcium bromide as well as mixtures thereof.
- composition can also contain the customary diluents such as graphite, silicon carbide, aluminium oxide, and other stable compounds.
- the novelty of the invention is based primarily upon the inclusion in the mixture of free carbon, for example in the form of finely ground charcoal or carbon black, or activated carbon. It has been found that the action of the mixture is best if the content of free carbon is between 2 and 40%, preferably between 5 and 15%.
- the amount of activating agent is usually between 2 and 10%, preferably 44%
- the amount of boron containing material is usually at least 10% of the composition and can be as much as 96%. When a diluent is employed it us used in an amount of '5 to 88%.
- the invention is primarily adapted to the boriding of steel but can also be used to boride other metals such as iron powder material parts, all kinds of cast iron, nickel and molybdenum.
- the boriding can be accomplished at conventional boriding temperatures, e.g. temperatures of to 1100 C.
- EXAMPLE 1 A sample of steel Ck 15, normalized, was treated for hours at 900 C. in a boriding powder composed of 74% boron carbide (B C), 16% borax and potassium fluoride.
- the metallographically ascertained boride layer had a thickness of 220 to 250 millimicrons. The entire layer was pore free.
- the metallographically ascertained thickness of the boride layer imparted to a sample of steel Ck 15 by boriding at 900 C. for 5 hours was between 190 and 220 millimicrons. This layer also was pore free.
- EXAMPLE 4 A further experiment was carried out with a mixture of 34% boron carbide, 16% borax, 10% potassium fluoride and 40% carbon black.
- a sample of steel Ck 15 was borided for 5 hours at 900 C. in this composition.
- the thickness of the boride layer as determined metallographically was then 150 to 170 millimicrons.
- the boride layer was free of pores.
- EXAMPLE 5 EXAMPLE 6- In this experiment a mixture of 20 boron carbide, 10% sodium fluoride, 5% carbon in the form of finely ground charcoal and 65% graphite was used.
- the layer on the molybdenum sample was only 15 to 25 millimicrons thick and consisted of the compound MOBZ.
- the layers were in all cases completely free of pores.
- a boron imparting agent selected from the group consisting of amorphous boron, crystalline boron, ferroboron, boron carbide and borax, an activator and finely powdered activated carbon in an amount of 2 to 40% of said composition and heating to 800 to 1100 C.
- a process according to claim 2 wherein the activator is selected from the group consisting of ammonium halides, al kalimetal halides and alkaline earth metal halides.
- activator is used in an amount of 2 to 10% and is selected from the group consisting of potassium chloride, sodium chloride, ammonium chloride, calcium chloride, barium fluoride, magnesium fluoride, potassium fluoride and sodium fluoride.
- composition consists essentially of boron imparting agent, 2 to 40% of free carbon and 2 to 10% of activator.
- the boron imparting agent is selected from the group consisting of amorphous boron, crystalline boron, ferroboron, boron carbide and borax and the activator is selected from the group consisting of ammonium, alkali and alkaline earth chlorides and fluorides.
- boron imparting agent is a mixture of boron carbide and borax.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Catalysts (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2126379A DE2126379C3 (de) | 1971-05-27 | 1971-05-27 | Verfahren zum Borieren von Metallen, insbesondere von Stahl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3806374A true US3806374A (en) | 1974-04-23 |
Family
ID=5809096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00234397A Expired - Lifetime US3806374A (en) | 1971-05-27 | 1972-03-13 | Process for boriding steel |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3806374A (enrdf_load_stackoverflow) |
| JP (1) | JPS5532784B1 (enrdf_load_stackoverflow) |
| DE (1) | DE2126379C3 (enrdf_load_stackoverflow) |
| FR (1) | FR2138614B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1384169A (enrdf_load_stackoverflow) |
| IT (1) | IT948985B (enrdf_load_stackoverflow) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3936327A (en) * | 1972-09-07 | 1976-02-03 | Elektroschmelzwerk Kempten Gmbh | Boriding composition |
| US3994750A (en) * | 1974-02-16 | 1976-11-30 | Karl Hehl | Method of producing abrasion resistant plastification elements for injection molding machines |
| US4102838A (en) * | 1977-05-23 | 1978-07-25 | Hughes Tool Company | Composition and method for selective boronizing |
| US4188242A (en) * | 1975-10-16 | 1980-02-12 | Hughes Tool Company | Combination carburizing and boronizing methods |
| WO1983000106A1 (en) * | 1981-07-02 | 1983-01-20 | Turbine Metal Technology Inc | Erosion resistant tubular apparatus for handling slurries |
| US4404045A (en) * | 1979-02-27 | 1983-09-13 | Association Pour La Recherche Et Le Development Des Methodes Et Processus Industriels (Armines) | Surface-boronized pieces |
| EP0131536A1 (en) * | 1983-07-08 | 1985-01-16 | United Technologies Corporation | Chromium boron surfaced nickel-iron base alloys |
| US4533403A (en) * | 1983-10-31 | 1985-08-06 | Dresser Industries, Inc. | Pack composition for borocarburizing ferrous substrates |
| US4539053A (en) * | 1983-10-31 | 1985-09-03 | Dresser Industries, Inc. | Pack composition for carburosiliconizing ferrous substrates |
| US6245162B1 (en) * | 1998-07-09 | 2001-06-12 | Houghton Durferrit Gmbh | Boriding agent |
| US20050208213A1 (en) * | 2002-11-15 | 2005-09-22 | University Of Utah Research Foundation | Titanium boride coatings on titanium surfaces and associated methods |
| US20070018139A1 (en) * | 2005-05-10 | 2007-01-25 | Chandran K S R | Nanostructured titanium monoboride monolithic material and associated methods |
| US20100176339A1 (en) * | 2009-01-12 | 2010-07-15 | Chandran K S Ravi | Jewelry having titanium boride compounds and methods of making the same |
| 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 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376936A (en) * | 1976-12-21 | 1978-07-07 | Pioneer Electronic Corp | Surface hardening method |
| DE3917071C1 (enrdf_load_stackoverflow) * | 1988-10-22 | 1990-04-19 | Thyssen Edelstahlwerke Ag, 4000 Duesseldorf, De | |
| RU2293789C1 (ru) * | 2005-07-25 | 2007-02-20 | Государственное образовательное учреждение высшего профессионального образования Восточно-Сибирский государственный технологический университет | Способ борирования углеродистой стали |
| RU2710820C1 (ru) * | 2018-10-17 | 2020-01-14 | Федеральное государственное бюджетное научное учреждение "Федеральный научный агроинженерный центр ВИМ" (ФГБНУ ФНАЦ ВИМ) | Способ получения боридных покрытий увеличенной толщины |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1472850A (en) * | 1921-10-19 | 1923-11-06 | Miyaguchi Takeo | Method of cementation of boron into the surface of iron or steel |
| US1472851A (en) * | 1921-10-19 | 1923-11-06 | Miyaguchi Takeo | Method of cementation of boron into the surface of iron or steel |
| FR882632A (fr) * | 1940-07-03 | 1943-06-09 | Procédé pour assurer l'inoxydabilité des métaux ferreux |
-
1971
- 1971-05-27 DE DE2126379A patent/DE2126379C3/de not_active Expired
-
1972
- 1972-02-01 IT IT67292/72A patent/IT948985B/it active
- 1972-02-29 FR FR7206905A patent/FR2138614B1/fr not_active Expired
- 1972-03-13 US US00234397A patent/US3806374A/en not_active Expired - Lifetime
- 1972-05-24 GB GB2445972A patent/GB1384169A/en not_active Expired
- 1972-05-26 JP JP5237772A patent/JPS5532784B1/ja active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3936327A (en) * | 1972-09-07 | 1976-02-03 | Elektroschmelzwerk Kempten Gmbh | Boriding composition |
| US3994750A (en) * | 1974-02-16 | 1976-11-30 | Karl Hehl | Method of producing abrasion resistant plastification elements for injection molding machines |
| US4188242A (en) * | 1975-10-16 | 1980-02-12 | Hughes Tool Company | Combination carburizing and boronizing methods |
| US4102838A (en) * | 1977-05-23 | 1978-07-25 | Hughes Tool Company | Composition and method for selective boronizing |
| US4404045A (en) * | 1979-02-27 | 1983-09-13 | Association Pour La Recherche Et Le Development Des Methodes Et Processus Industriels (Armines) | Surface-boronized pieces |
| WO1983000106A1 (en) * | 1981-07-02 | 1983-01-20 | Turbine Metal Technology Inc | Erosion resistant tubular apparatus for handling slurries |
| US4389439A (en) * | 1981-07-02 | 1983-06-21 | Turbine Metal Technology, Inc. | Erosion resistant tubular apparatus for handling slurries |
| EP0131536A1 (en) * | 1983-07-08 | 1985-01-16 | United Technologies Corporation | Chromium boron surfaced nickel-iron base alloys |
| US4533403A (en) * | 1983-10-31 | 1985-08-06 | Dresser Industries, Inc. | Pack composition for borocarburizing ferrous substrates |
| US4539053A (en) * | 1983-10-31 | 1985-09-03 | Dresser Industries, Inc. | Pack composition for carburosiliconizing ferrous substrates |
| US6245162B1 (en) * | 1998-07-09 | 2001-06-12 | Houghton Durferrit Gmbh | Boriding agent |
| US20050208213A1 (en) * | 2002-11-15 | 2005-09-22 | University Of Utah Research Foundation | Titanium boride coatings on titanium surfaces and associated methods |
| US7264682B2 (en) | 2002-11-15 | 2007-09-04 | University Of Utah Research Foundation | Titanium boride coatings on titanium surfaces and associated methods |
| US20070018139A1 (en) * | 2005-05-10 | 2007-01-25 | Chandran K S R | Nanostructured titanium monoboride monolithic material and associated methods |
| US20070235701A1 (en) * | 2005-05-10 | 2007-10-11 | Chandran K S R | Nanostructured titanium monoboride monolithic material and associated methods |
| US7459105B2 (en) | 2005-05-10 | 2008-12-02 | University Of Utah Research Foundation | Nanostructured titanium monoboride monolithic material and associated methods |
| US7501081B2 (en) | 2005-05-10 | 2009-03-10 | University Of Utah Research Foundation | Nanostructured titanium monoboride monolithic material and associated methods |
| US20100176339A1 (en) * | 2009-01-12 | 2010-07-15 | Chandran K S Ravi | Jewelry having titanium boride compounds and methods of making the same |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2138614B1 (enrdf_load_stackoverflow) | 1975-08-29 |
| DE2126379C3 (de) | 1979-09-06 |
| FR2138614A1 (enrdf_load_stackoverflow) | 1973-01-05 |
| DE2126379B2 (de) | 1978-12-21 |
| JPS5532784B1 (enrdf_load_stackoverflow) | 1980-08-27 |
| IT948985B (it) | 1973-06-11 |
| GB1384169A (en) | 1975-02-19 |
| DE2126379A1 (de) | 1972-12-07 |
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