EP2844465A2 - Verbessertes verfahren zur diffusion eines substrats in ein basismaterial - Google Patents
Verbessertes verfahren zur diffusion eines substrats in ein basismaterialInfo
- Publication number
- EP2844465A2 EP2844465A2 EP13856167.5A EP13856167A EP2844465A2 EP 2844465 A2 EP2844465 A2 EP 2844465A2 EP 13856167 A EP13856167 A EP 13856167A EP 2844465 A2 EP2844465 A2 EP 2844465A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- base material
- titanium
- stainless steel
- salt bath
- chromium
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 190
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000000758 substrate Substances 0.000 title claims abstract description 46
- 150000003839 salts Chemical class 0.000 claims abstract description 83
- 238000009792 diffusion process Methods 0.000 claims abstract description 47
- 238000002386 leaching Methods 0.000 claims abstract description 34
- 239000000126 substance Substances 0.000 claims abstract description 29
- 230000004913 activation Effects 0.000 claims abstract description 28
- 239000003054 catalyst Substances 0.000 claims abstract description 21
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 115
- 239000010936 titanium Substances 0.000 claims description 115
- 229910052719 titanium Inorganic materials 0.000 claims description 115
- 229910001220 stainless steel Inorganic materials 0.000 claims description 92
- 239000010935 stainless steel Substances 0.000 claims description 89
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 51
- 229910052804 chromium Inorganic materials 0.000 claims description 51
- 239000011651 chromium Substances 0.000 claims description 51
- 238000005498 polishing Methods 0.000 claims description 34
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 20
- 150000004767 nitrides Chemical class 0.000 claims description 13
- 238000002791 soaking Methods 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 12
- GKKCIDNWFBPDBW-UHFFFAOYSA-M potassium cyanate Chemical compound [K]OC#N GKKCIDNWFBPDBW-UHFFFAOYSA-M 0.000 claims description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 10
- ZVCDLGYNFYZZOK-UHFFFAOYSA-M sodium cyanate Chemical compound [Na]OC#N ZVCDLGYNFYZZOK-UHFFFAOYSA-M 0.000 claims description 10
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 9
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims 6
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 150000003609 titanium compounds Chemical class 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 14
- 230000007797 corrosion Effects 0.000 description 14
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 238000006748 scratching Methods 0.000 description 6
- 230000002393 scratching effect Effects 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000003562 lightweight material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy 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
- 239000010962 carbon steel Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
- C23C10/24—Salt bath containing the element to be diffused
-
- 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
- C23C12/00—Solid state diffusion of at least one non-metal element other than silicon and at least one metal element or silicon into metallic material surfaces
- C23C12/02—Diffusion in one step
-
- 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
- C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
- C23C8/42—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 liquids, e.g. salt baths, liquid suspensions only one element being applied
- C23C8/48—Nitriding
- C23C8/50—Nitriding of ferrous surfaces
Definitions
- the 300 series stainless steel base material is soaked in the salt bath for a relatively short period of time from about 10 minutes to about 90 minutes. In order to prevent any distortion or warping of the base material, it is preferable to soak the stainless steel base material in the salt bath heated at about 600 degrees C to about 620 degrees C for only about 10 to about 20 minutes. With the lowered activation energy of the stainless steel base material and leaching of chromium therefrom, the titanium in the salt bath quickly and easily diffuses into the surface of the base material. The titanium substantially replaces the chromium leached from the base material. Using this improved process, titanium is shown to diffuse into at least 20 microns of surface of the 300 series stainless steel base material.
- electrolyzed titanium Added to the bath is electrolyzed titanium.
- electrolyzed titanium In order to optimally lower the activation energy of the 400 series stainless steel base material, promote leaching of chromium from the stainless steel base material and promote diffusion of titanium into the surface of the stainless steel base material, it is preferable that about 40 micrograms to about 60 micrograms of electrolyzed titanium be added to the bath such that a concentration of from about 0.005% to about 0.010% of electrolyzed titanium in the salt bath is achieved. This amount of electrolyzed titanium is preferred to replace the chromium leached from the 400 series stainless steel base material and enhance the corrosion-resistance of the treated base material.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Catalysts (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261642768P | 2012-05-04 | 2012-05-04 | |
| US201261642759P | 2012-05-04 | 2012-05-04 | |
| US201261642781P | 2012-05-04 | 2012-05-04 | |
| PCT/US2013/039690 WO2014081466A2 (en) | 2012-05-04 | 2013-05-06 | Improved process for diffusing a substrate into a base material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2844465A2 true EP2844465A2 (de) | 2015-03-11 |
| EP2844465A4 EP2844465A4 (de) | 2016-06-29 |
Family
ID=50776655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13856167.5A Withdrawn EP2844465A4 (de) | 2012-05-04 | 2013-05-06 | Verbessertes verfahren zur diffusion eines substrats in ein basismaterial |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20150140226A1 (de) |
| EP (1) | EP2844465A4 (de) |
| JP (1) | JP2015531023A (de) |
| KR (1) | KR20150006433A (de) |
| CN (1) | CN104334340A (de) |
| WO (1) | WO2014081466A2 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6645566B2 (en) * | 1999-06-01 | 2003-11-11 | Jong Ho Ko | Process for heat treatment nitriding in the presence of titanium and products produced thereby |
| US7427587B2 (en) * | 2005-06-20 | 2008-09-23 | Crissey Gordon K | Polishing compound |
| US7438769B2 (en) * | 2006-04-18 | 2008-10-21 | Philos Jongho Ko | Process for diffusing titanium and nitride into a material having a coating thereon |
| WO2008150306A1 (en) * | 2006-10-06 | 2008-12-11 | Philos Jongho Ko | Improved process for diffusing titanium and nitride into a steel or steel alloy by altering the content of such |
| US8246423B2 (en) * | 2007-11-14 | 2012-08-21 | Robert Steven Greer | Thumb-operated detachable liquid polish dispenser for a hand-held surface finishing power tool |
| US7896981B2 (en) * | 2009-04-28 | 2011-03-01 | Apple Inc. | Nitriding stainless steel for consumer electronic products |
-
2013
- 2013-05-06 EP EP13856167.5A patent/EP2844465A4/de not_active Withdrawn
- 2013-05-06 US US14/398,503 patent/US20150140226A1/en not_active Abandoned
- 2013-05-06 CN CN201380022853.9A patent/CN104334340A/zh active Pending
- 2013-05-06 JP JP2015510504A patent/JP2015531023A/ja active Pending
- 2013-05-06 KR KR1020147030844A patent/KR20150006433A/ko not_active Ceased
- 2013-05-06 WO PCT/US2013/039690 patent/WO2014081466A2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP2844465A4 (de) | 2016-06-29 |
| JP2015531023A (ja) | 2015-10-29 |
| WO2014081466A2 (en) | 2014-05-30 |
| US20150140226A1 (en) | 2015-05-21 |
| CN104334340A (zh) | 2015-02-04 |
| WO2014081466A3 (en) | 2014-07-17 |
| KR20150006433A (ko) | 2015-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20141106 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAX | Request for extension of the european patent (deleted) | ||
| A4 | Supplementary search report drawn up and despatched |
Effective date: 20160601 |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: C23C 12/02 20060101AFI20160525BHEP |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Effective date: 20161208 |