EP1180552A1 - Procédé de traitement superficiel de pièces mécaniques soumises à la fois à l'usure et à la corrosion - Google Patents
Procédé de traitement superficiel de pièces mécaniques soumises à la fois à l'usure et à la corrosion Download PDFInfo
- Publication number
- EP1180552A1 EP1180552A1 EP01402028A EP01402028A EP1180552A1 EP 1180552 A1 EP1180552 A1 EP 1180552A1 EP 01402028 A EP01402028 A EP 01402028A EP 01402028 A EP01402028 A EP 01402028A EP 1180552 A1 EP1180552 A1 EP 1180552A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nitriding
- process according
- approximately
- ions
- weight
- 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.)
- Granted
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
- C23C8/40—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
-
- 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
- C23C8/58—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 more than one element being applied in more than one step
Definitions
- the present invention relates to a method of surface treatment of parts mechanical subjected to both wear and corrosion. More specifically, the invention relates to a method of surface treatment of mechanical parts subject to both wear and corrosion to give said parts a high resistance to wear and corrosion as well as a roughness favorable to lubrication. Even more specifically, the invention relates to a treatment method surface of mechanical parts whose lubrication must be controlled so precise, and whose roughness must therefore be controlled within a narrow range.
- the thickness of the oil film on the surface of a part depends much of the roughness of its surface: a perfectly polished part may not be wet with oil, while, conversely, a very rough part will be covered of a film whose thickness will be less than the height of the microreliefs, this will result in high risk of seizure.
- the rods of cylinders and the valves of engines thermal.
- the thickness of the oil film at its surface must be perfectly controlled; too weak, the rod-seal contact is no longer lubricated and there is wear; too high, the resulting lubricant leakage affects the cylinder performance.
- the film oil performs both the lubrication and dynamic sealing functions in the valve stem / valve guide contact; too polished a piece will provide a film thin oil and lubrication will be random, while high roughness will result in high oil consumption and loss of engine performance.
- the Applicant has demonstrated that it is possible to obtain both a high resistance to wear and corrosion and a roughness conducive to lubrication by conducting nitriding and oxidation operations in special baths.
- the present invention provides a method of surface treatment of mechanical parts, making it possible to give say parts high resistance to wear and corrosion as well as roughness suitable for lubrication in which nitriding is carried out consecutively said part followed by an oxidation of said part, characterized in that said nitriding is carried out by immersing said part in a nitriding bath molten salts free of sulfur species, at a temperature between about 500 ° C and about 700 ° C, and in that said oxidation is carried out in a aqueous oxidizing solution at a temperature below about 200 ° C.
- the process must respect both the association following nitriding and oxidation, the two operations being carried out in liquid phase under the conditions specified above.
- Parallelepipedic specimens of dimensions 30 x 18 x 8 mm as well as 35 mm diameter rings, both made of non-alloy steel with 0.35% carbon and initial roughness Rmax 0.6 ⁇ m, were first treated in a salt bath nitriding containing by mass 19% of cyanate ions, 37% of carbonate ions and 3.5% lithium ions, the rest being sodium and potassium ions. The pieces were immersed for 40 minutes at a temperature of 630 ° C.
- test pieces were characterized on the one hand by roughness and on the other hand by friction tests.
- the roughness measurements carried out on the parts thus treated are grouped in Table II and compared with those obtained with the conventional methods listed, N1, N2, 0x1 and 0x2 corresponding for N1 to nitriding according to FR 72 05 498, N2 to nitriding according to (TF1), 0x1 to an oxidation according to FR 93 09814 and 02 to an oxidation according to FR 76 07858.
- the morphological parameters of the roughness patterns used to qualify the surface states are: Ra (arithmetic mean of length) and R (average depth arithmetic).
- the parts are immersed for 30 minutes in the bath maintained at a temperature of 590 ° C then soaked in cold water. Once washed, they are oxidized in the brine described in Example 1 for 10 minutes at 130 ° C. and then at again washed in hot water.
- the roughness obtained with the processes standard oxidation nitrocarburizing or oxidized sulfo nitrocarburizing are relatively high due to the poor quality of the surface layers obtained (very porous layers and poorly adherent powdery oxides).
- the Rz is usually of the order of 10 ⁇ m and it is often necessary to carry out a polishing or even micro-blasting operation to bring roughness Rz to the vicinity 2 ⁇ m.
- test pieces treated according to the range described in this example have an Rz between 2 and 2.5 ⁇ m without the need for polishing or microbeading.
- Rz average roughness depths according to standard NF ISO 4287 from 1997 corrected 1998.
- test tubes cylindrical non-alloy steel 0.35% by mass of carbon were treated in associating different nitriding processes with the usual oxidation processes, including including that cited in Examples 1 and 2.
- the nitriding step was carried out either, according to FR 72 05498, at 570 ° C., in a salt bath consisting by weight of 37% of cyanate ions and 17% of carbonate ions, the rest being K + alkaline cations, Na + and Li +, with in addition 10 to 15 ppm of S 2 - ions, ie under the same conditions as those of Example 1.
- the oxidation step was carried out either according to FR 9309814, at 475 ° C in a bath salts based on 13.1% carbonate ions, 36.5% nitrate ions, 11.3% ions hydroxides and 0.1% dichromate ions, the remainder being alkaline cations K +, Na + and Li +, either under the conditions described in Examples 1 and 2.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Chemical Treatment Of Metals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Forging (AREA)
Abstract
Description
en poids
- Li+ = 2,8 à 4,2
- Na+ = 16,0 à 19,0
- K+ = 20,0 à 23,0
- CO3 2- = 38,0 à 43,0
- CNO- = 12,0 à 17,0
- HO- = 10,0 à 22%
- NO3 - = 1,8 à 11,8%
- NO2 - = 0 à 5,3%
- S2O3 2- = 0,1 à 1,9%
- Cl- = 0 à 1,0%
- Na+ = 1,0 à 38%
en poids
OH- | = | 17 à 18,5 |
NO3 - | = | 4,0 à 5,5 |
NO2 - | = | 1,0 à 2,5 |
Cl- | = | 0,25 à 0,35 |
Na+ | = | 25 à 29. |
HO- | 18% |
NO2 - | 2% |
NO3 - | 5% |
S2O3 2- | 1% |
Cl- | 0,3% |
Na+ | 27% |
TRAITEMENT | AVANT TRAITEMENT | APRES TRAITEMENT | |||
R (µm) | Ra (µm) | R (µm) | Ra (µm) | ||
N2Ox2 | NON POLI | 0,25 | 58 | 2,3 | 62 |
POLI | 0,25 | 58 | 0,9 | 54 | |
N3 + 0x3 | NON POLI | 0,25 | 58 | 2,5 | 66 |
POLI | 0,25 | 58 | 0,9 | 56 | |
N1 + 0x3 : traitement selon l'invention | 0,25 | 58 | 0,85 | 52 |
Traitement | Durée de l'essai (mn) | Usure cumulée des deux pièces (µm) | Coefficient de frottement | |
N2 + 0x2 | Sans polissage | 30 | 30 | 0,4 |
Après polissage | 60 | 12 | 0,25 | |
N3 + 0x3 | Sans polissage | 30 | 34 | 0,43 |
Après polissage | 50 | 20 | 0,3 | |
N1 + 0x1 : traitement selon l'invention | 60 | 10 | 0,2 |
TRAITEMENT | RUGOSITE APRES TRAITEMENT | |
R (µm) | Ra (µm) | |
N2 570° C + Ox2 475° C | 2,3 | 62 |
N2 570° C + Ox1 130° C | 2.6 | 66 |
N1 630° C + Ox2 475° C | 2,4 | 63 |
N1 570° C + Ox1 130° C | 0,9 | 54 |
N1 630° C + Ox1 130° C selon invention | 0,85 | 52 |
N1 570° C + Ox1 110° C | 0,9 | 55 |
N1 590° C + Ox1 150° C selon invention | 0,85 | 51 |
Claims (15)
- Procédé de traitement superficiel de pièces mécaniques, permettant de conférer aux dites pièces une résistance élevée à l'usure et à la corrosion ainsi qu'une rugosité propice à la lubrification dans lequel on effectue consécutivement une nitruration de ladite pièce suivie d'une oxydation de ladite pièce, caractérisé en ce que ladite nitruration est mise en oeuvre par l'immersion de ladite pièce dans un bain de nitruration de sels fondus exempt d'espèces soufrées, à une température comprise entre environ 500°C et environ 700°C, et en ce que ladite oxydation est mise en oeuvre dans une solution aqueuse oxydante à une température inférieure à environ 200°C.
- Procédé selon la revendication 1, caractérisé en ce que le bain de nitruration de sels fondus contient les ions suivants, en pourcentage en poids :Li+ = 0,2 à 10Na+ =10 à 30K+ =10 à 30CO3 2- = 25 à 45CNO- = 10 à 40
- Procédé selon la revendication 2, caractérisé en ce que le bain de nitruration de sels fondus contient les ions suivants, en pourcentage en poids :Li+ = 2,8 à 4,2Na+ = 16,0 à 19,0K+ = 20,0 à 23,0CO3 2- = 38,0 à 43,0CNO- = 12,0 à 17,0
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la pièce mécanique est immergée dans le bain de nitruration pendant une durée au moins égale à environ 10 minutes.
- Procédé selon la revendication 4, caractérisé en ce que la pièce mécanique est immergée dans le bain de nitruration pendant une durée comprise entre environ 30 et 60 minutes.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le bain de nitruration est agité par de l'air comprimé.
- Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la solution aqueuse oxydante contient les ions suivants, en pourcentage en poids :
OH- = 10,0 à 22,0 NO3 - = 1,8 à 11,8 NO2 - = 0 à 5,3 Cl- = 0 à 1,0 Na+ = 1,0 à 38. - Procédé selon la revendication 7, caractérisé en ce que la solution aqueuse oxydante contient les ions suivants, en pourcentage en poids:
OH- = 17 à 18,5 NO3 - = 4,0 à 5,5 NO2 - = 1,0 à 2,5 Cl- = 0,25 à 0,35 Na+ = 25 à 29. - Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la solution aqueuse oxydante contient en outre de 0,1 à 1,9 % en poids d'ions thiosulfate S2O3 2-
- Procédé selon la revendication 9, caractérisé en ce que la solution aqueuse oxydante contient en outre 0,6 à 1,0 % en poids d'ions thiosulfate S2O3 2-
- Procédé selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la nitruration est réalisée à une température comprise entre environ 590°C et environ 650°C.
- Procédé selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'oxydation est réalisée à une température comprise entre environ 110°C et environ 160°C.
- Procédé selon la revendication 12, caractérisé en ce que l'oxydation est réalisée à une température comprise entre environ 125°C et environ 135°C.
- Procédé selon l'une quelconque des revendications 1 à 13, caractérisé en ce que la durée d'immersion de la pièce dans le bain d'oxydation est comprise entre environ 5 et 45 minutes.
- Pièce traitée par un procédé selon l'une quelconque des revendications 1 à 14, dans laquelle ledit procédé a provoqué des modifications superficielles, caractérisée en ce que sa rugosité a une valeur Ra inférieure à environ 0,5 µm et en ce que sa surface est exempte de "tables".
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0010633 | 2000-08-14 | ||
FR0010633A FR2812888B1 (fr) | 2000-08-14 | 2000-08-14 | Procede de traitement superficiel de pieces mecaniques soumise a la fois a l'usure et a la corrosion |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1180552A1 true EP1180552A1 (fr) | 2002-02-20 |
EP1180552B1 EP1180552B1 (fr) | 2011-02-16 |
Family
ID=8853537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01402028A Expired - Lifetime EP1180552B1 (fr) | 2000-08-14 | 2001-07-26 | Procédé de traitement superficiel de pièces mécaniques soumises à la fois à l'usure et à la corrosion |
Country Status (16)
Country | Link |
---|---|
US (1) | US6645315B2 (fr) |
EP (1) | EP1180552B1 (fr) |
JP (1) | JP3809082B2 (fr) |
KR (1) | KR100458663B1 (fr) |
CN (1) | CN1231611C (fr) |
AT (1) | ATE498704T1 (fr) |
AU (1) | AU774372B2 (fr) |
BR (1) | BR0103350B1 (fr) |
CA (1) | CA2355479C (fr) |
DE (1) | DE60144039D1 (fr) |
ES (1) | ES2356807T3 (fr) |
FR (1) | FR2812888B1 (fr) |
MX (1) | MXPA01008184A (fr) |
MY (1) | MY130608A (fr) |
SG (1) | SG98452A1 (fr) |
TW (1) | TWI230745B (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010094891A1 (fr) | 2009-02-18 | 2010-08-26 | H.E.F. | Procede de traitement de pieces pour ustensiles de cuisine |
FR3030578A1 (fr) * | 2014-12-23 | 2016-06-24 | Hydromecanique & Frottement | Procede de traitement superficiel d'une piece en acier par nitruration ou nitrocarburation, oxydation puis impregnation |
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JP2004003599A (ja) * | 2002-03-29 | 2004-01-08 | Denso Corp | 電磁駆動装置 |
KR100679326B1 (ko) | 2005-05-26 | 2007-02-07 | 주식회사 삼락열처리 | 열처리 방법 |
DE102007060085B4 (de) * | 2007-12-13 | 2012-03-15 | Durferrit Gmbh | Verfahren zur Erzeugung von korrosionsbeständigen Oberflächen nitrierter oder nitrocarburierter Bauteile aus Stahl sowie nitrocarburierte oder nitrierte Bauteile aus Stahl mit oxidierten Oberflächen |
CN102251211A (zh) * | 2010-05-18 | 2011-11-23 | 上海江凯金属表面处理技术有限公司 | 对不锈钢进排气门进行盐浴氮化处理中的盐浴配方及处理方法 |
CN103276345B (zh) * | 2012-12-28 | 2015-07-22 | 上海尚职纳米科技有限公司 | 一种应用于汽车零部件金属表面qpq盐浴复合强化改性高新技术 |
FR3001231B1 (fr) * | 2013-01-24 | 2016-05-06 | Renault Sa | Procede de traitement thermochimique de diffusion pour un element mecanique, et element mecanique correspondant |
JP6111126B2 (ja) * | 2013-04-12 | 2017-04-05 | パーカー熱処理工業株式会社 | 塩浴軟窒化処理方法 |
CN106319438A (zh) * | 2015-07-01 | 2017-01-11 | 杭州巨星科技股份有限公司 | 稀土催渗qpq组合物及qpq工艺制造高速切削工具的方法 |
CN108359785B (zh) * | 2018-03-19 | 2019-12-17 | 盐城工学院 | 一种W6Mo5Cr4V2高速钢拉刀的强韧化处理方法 |
FR3096419B1 (fr) * | 2019-05-22 | 2021-04-23 | Hydromecanique & Frottement | Organe de guidage, système mécanique comprenant un tel organe de guidage, et procédé de fabrication d’un tel organe de guidage |
CN113073287A (zh) * | 2021-03-19 | 2021-07-06 | 北京航天瑞泰液压技术有限公司 | 一种油气弹簧内缸筒气密性改进方法 |
FR3133394A1 (fr) | 2022-03-14 | 2023-09-15 | Hydromecanique Et Frottement | Procede de traitement d’une piece en alliage de fer pour ameliorer sa resistance a la corrosion |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1149035B (de) * | 1959-04-10 | 1963-05-22 | Degussa | Verfahren und Vorrichtung zum Nitrieren von Metallen, insbesondere Eisenlegierungen, in alkalicyanid- und alkalicyanathaltigen Salzbaedern |
JPS57152461A (en) * | 1981-03-16 | 1982-09-20 | Parker Netsushiyori Kogyo Kk | Surface treatment of iron member for increasing corrosion and wear resistance |
DE4119820C1 (en) * | 1991-06-15 | 1992-09-03 | Goetz Dr. 5400 Koblenz De Baum | Treatment of iron@ (alloys) on same support - comprises nitriding in molten alkali metal cyanate and quenching in hot aq. salt bath |
EP0524037A1 (fr) * | 1991-07-16 | 1993-01-20 | CENTRE STEPHANOIS DE RECHERCHES MECANIQUES HYDROMECANIQUE ET FROTTEMENT Société dite: | Procédé de traitement de pièces en métal ferreux pour améliorer simultanément leur résistance à la corrosion et leurs propriétés de friction |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE795015A (fr) * | 1972-02-18 | 1973-05-29 | Stephanois Rech Mec | Procede de traitement de pieces metalliques ferreuses pour augmenter leur resistance a l'usure et au grippage |
JPS599166A (ja) * | 1982-07-06 | 1984-01-18 | Parker Netsushiyori Kogyo Kk | 鋼材の表面硬化と窒化処理方法 |
FR2708623B1 (fr) * | 1993-08-06 | 1995-10-20 | Stephanois Rech Mec | Procédé de nitruration de pièces en métal ferreux, à résistance améliorée à la corrosion. |
US5576066A (en) * | 1993-08-10 | 1996-11-19 | Centre Stephanois De Recherches Mecaniques Hydromecanique Et Frottement | Method of improving the wear and corrosion resistance of ferrous metal parts |
JPH0820877A (ja) * | 1994-07-07 | 1996-01-23 | Nippon Parkerizing Co Ltd | 耐食性にすぐれた鉄系金属複合材料の製造方法 |
FR2731232B1 (fr) * | 1995-03-01 | 1997-05-16 | Stephanois Rech | Procede de traitement de surfaces ferreuses soumises a des sollicitations elevees de frottement |
DE69838575T2 (de) * | 1997-11-28 | 2008-07-24 | Maizuru Corp. | Verfahren zur Oberflächenbehandlung von Eisenmaterial und Salzbadofen dafür verwendet |
-
2000
- 2000-08-14 FR FR0010633A patent/FR2812888B1/fr not_active Expired - Fee Related
-
2001
- 2001-07-26 AT AT01402028T patent/ATE498704T1/de active
- 2001-07-26 ES ES01402028T patent/ES2356807T3/es not_active Expired - Lifetime
- 2001-07-26 EP EP01402028A patent/EP1180552B1/fr not_active Expired - Lifetime
- 2001-07-26 DE DE60144039T patent/DE60144039D1/de not_active Expired - Lifetime
- 2001-08-02 SG SG200104655A patent/SG98452A1/en unknown
- 2001-08-02 TW TW090118917A patent/TWI230745B/zh not_active IP Right Cessation
- 2001-08-06 US US09/923,044 patent/US6645315B2/en not_active Expired - Lifetime
- 2001-08-13 AU AU57984/01A patent/AU774372B2/en not_active Expired
- 2001-08-13 KR KR10-2001-0048641A patent/KR100458663B1/ko active IP Right Grant
- 2001-08-13 MX MXPA01008184A patent/MXPA01008184A/es active IP Right Grant
- 2001-08-13 BR BRPI0103350-6A patent/BR0103350B1/pt not_active IP Right Cessation
- 2001-08-13 CA CA002355479A patent/CA2355479C/fr not_active Expired - Lifetime
- 2001-08-13 MY MYPI20013787 patent/MY130608A/en unknown
- 2001-08-14 JP JP2001246053A patent/JP3809082B2/ja not_active Expired - Lifetime
- 2001-08-14 CN CNB01125534XA patent/CN1231611C/zh not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1149035B (de) * | 1959-04-10 | 1963-05-22 | Degussa | Verfahren und Vorrichtung zum Nitrieren von Metallen, insbesondere Eisenlegierungen, in alkalicyanid- und alkalicyanathaltigen Salzbaedern |
JPS57152461A (en) * | 1981-03-16 | 1982-09-20 | Parker Netsushiyori Kogyo Kk | Surface treatment of iron member for increasing corrosion and wear resistance |
DE4119820C1 (en) * | 1991-06-15 | 1992-09-03 | Goetz Dr. 5400 Koblenz De Baum | Treatment of iron@ (alloys) on same support - comprises nitriding in molten alkali metal cyanate and quenching in hot aq. salt bath |
EP0524037A1 (fr) * | 1991-07-16 | 1993-01-20 | CENTRE STEPHANOIS DE RECHERCHES MECANIQUES HYDROMECANIQUE ET FROTTEMENT Société dite: | Procédé de traitement de pièces en métal ferreux pour améliorer simultanément leur résistance à la corrosion et leurs propriétés de friction |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 198243, Derwent World Patents Index; Class M13, AN 1982-91697E, XP002166004 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010094891A1 (fr) | 2009-02-18 | 2010-08-26 | H.E.F. | Procede de traitement de pieces pour ustensiles de cuisine |
FR3030578A1 (fr) * | 2014-12-23 | 2016-06-24 | Hydromecanique & Frottement | Procede de traitement superficiel d'une piece en acier par nitruration ou nitrocarburation, oxydation puis impregnation |
WO2016102813A1 (fr) | 2014-12-23 | 2016-06-30 | H.E.F. | Procédé de traitement superficiel d'une pièce en acier par nitruration ou nitrocarburation, oxydation puis imprégnation |
US10774414B2 (en) | 2014-12-23 | 2020-09-15 | H.E.F. | Method for surface treatment of a steel component by nitriding or nitrocarburising, oxidising and then impregnating |
Also Published As
Publication number | Publication date |
---|---|
JP3809082B2 (ja) | 2006-08-16 |
TWI230745B (en) | 2005-04-11 |
JP2002060925A (ja) | 2002-02-28 |
AU774372B2 (en) | 2004-06-24 |
US6645315B2 (en) | 2003-11-11 |
SG98452A1 (en) | 2003-09-19 |
US20020038679A1 (en) | 2002-04-04 |
EP1180552B1 (fr) | 2011-02-16 |
CN1231611C (zh) | 2005-12-14 |
CN1338529A (zh) | 2002-03-06 |
DE60144039D1 (de) | 2011-03-31 |
CA2355479A1 (fr) | 2002-02-14 |
KR100458663B1 (ko) | 2004-12-03 |
ES2356807T3 (es) | 2011-04-13 |
BR0103350B1 (pt) | 2012-02-07 |
AU5798401A (en) | 2002-02-21 |
BR0103350A (pt) | 2002-05-28 |
ATE498704T1 (de) | 2011-03-15 |
KR20020013797A (ko) | 2002-02-21 |
MY130608A (en) | 2007-07-31 |
CA2355479C (fr) | 2004-06-29 |
FR2812888B1 (fr) | 2003-09-05 |
FR2812888A1 (fr) | 2002-02-15 |
MXPA01008184A (es) | 2004-10-29 |
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