EP2723923A1 - Konversionsschichtfreie bauteile von vakuumpumpen - Google Patents
Konversionsschichtfreie bauteile von vakuumpumpenInfo
- Publication number
- EP2723923A1 EP2723923A1 EP12728262.2A EP12728262A EP2723923A1 EP 2723923 A1 EP2723923 A1 EP 2723923A1 EP 12728262 A EP12728262 A EP 12728262A EP 2723923 A1 EP2723923 A1 EP 2723923A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- components
- alloys
- titanium
- vacuum pumps
- aluminum
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/04—Electrolytic coating other than with metals with inorganic materials
- C25D9/06—Electrolytic coating other than with metals with inorganic materials by anodic processes
-
- 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
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
-
- 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
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
Definitions
- the invention relates to conversion-layer-free components of vacuum pumps made of valve metals and their alloys.
- DE 101 63 864 AI relates to a method for coating objects made of valve metals or their alloys with a thin barrier layer of the metal and located thereon oxide ceramic layer whose surface is coated with fluoropolymers, which is characterized in that the fluoropolymers in the form of a solution Introduce vacuum impregnation in the capillary system of the oxide ceramic layer and dried after removing the non-wetting solution components.
- the group of valve metals aluminum, magnesium, titanium, niobium or zirconium and their alloys.
- this document also defines other components of vacuum pumps made of valve metals, such as rotors and stators of turbomolecular pumps.
- AlMnCu AlMgi; AIMgi, 5 ; E-AIMgSi; AIMgSio i5 ; AIZnMgCu 0 , 5; AIZnMgCui, 5 ; G-AISii, 2 ; G-AIS15MG; G-AISi 8 Cu 3 ; G-AICu 4 Ti; G-AICu 4 TiMg understood.
- magnesium casting alloys of ASTM designations AS41, AM60, AZ61, AZ63, AZ81; AZ91, HK31, QE22, ZE41, ZH62, ZK51, ZK61, EZ33, HZ32 as well as the wrought alloys AZ31, AZ61, AZ80, M1 ZK60, ZK40.
- pure titanium or titanium alloys such as TiAl 6 V4, TiAl5Fe 2 , 5 and others can be used.
- the oxide ceramic layer is essentially formed by a conversion layer of the surface of the component, so that practically a portion of the substrate material is removed here and converted into the oxidation barrier layer.
- valve metal objects in particular components of vacuum pumps with an oxide ceramic layer formed from the metal, which has a thin barrier layer as an interface to the metal, provided with a further polymeric coating, which is formed on the basis of parylenes.
- a further polymeric coating which is formed on the basis of parylenes.
- WO 03/029529 A1 WO 2006/047501 A2 and WO 2006/047526 A2 describe the production of an article with a corrosion-resistant, heat-resistant and abrasion-resistant ceramic coating of titanium and / or zirconium dioxide, which is prepared by direct or alternating current anodization on the article made of aluminum and / or titanium is applied.
- the objects underlying this prior art are not defined further. Also, no information on the chemical resistance, in particular the resistance to citric acid or hydrochloric and / or Flußsääuredämpfe present.
- the object of the present invention is to provide conversion-layer-free components of vacuum pumps made of valve metals and their alloys, which in addition to corrosion, heat and abrasion resistance have a galvanically generated conversion coating coating, the above In addition, also resistant to chemicals, especially resistant to citric acid or hydrochloric acid vapors. This is particularly important in the manufacture of components of vacuum pumps that come in contact with aggressive gases, such as HCl and / or HF vapor / gas, especially in the vacuum range.
- the solution to the above object consists in a first embodiment of conversion-free components of vacuum pumps made of valve metals and their alloys, which is characterized in that the surface of a galvanically produced coating of at least one oxide and / or an oxifluoride of an element of the group consisting of boron, germanium , Aluminum, magnesium, titanium, niobium, hafnium and / or zirconium and mixtures thereof with a layer thickness in the range of 5 to 50 ⁇ having.
- the solution of the abovementioned object utilizes contoured covering of surfaces, as is possible with known conversion layers such as KEPLA-Coat® or anodization layers.
- conversion layers such as KEPLA-Coat® or anodization layers.
- the deposited layers can have a hardness of about 700 HV.
- Components according to the invention of vacuum pumps made of valve metals and their alloys include, in particular, rotors, stators, stator disk halves, threaded steps, housings and bearing shells.
- valve metals is in accordance with the prior art here for metals of the group aluminum, magnesium, titanium, niobium and / or zirconium and their alloys.
- the special alloys of aluminum, magnesium and titanium mentioned in the introduction to the description are also particularly preferred for the purposes of the present invention.
- the thickness of the surface coating is 5 to 50 ⁇ . Particularly preferred according to the present invention, the thickness of the surface coating 15 to 30 ⁇ . If the thickness of the surface coating is chosen to be too thin, adequate protection against corrosion, heat, abrasion and chemicals is not guaranteed. If, however, the thickness of the surface coating chosen too large, so appropriate coatings tend to flake off. In addition, correspondingly thick layers are uneconomical.
- a further embodiment of the present invention consists in the method for the production of galvanically generated conversion-layer-free components and of vacuum pumps made of valve metals and their alloys, which is characterized in that
- this method is already known from the cited documents WO 03/029539 Al, WO 2006/047501 A2 and WO 2006/047526 A2.
- the present invention differs in that the selected components of vacuum pumps of valve metals and their alloys.
- a sample sheet of AlMgSii having the dimensions of 100 ⁇ 50 ⁇ 1.5 mm was anodically coated at 400 volts for 5 minutes in an electrolyte described in WO 03/029529, WO 2006/047501 A2 and WO 2006/047526 A2 within a period of 5 minutes , The determined layer thickness was about 10 pm.
- Example 3 A sample sheet as described in Example 2 was coated analogously within 10 minutes. The determined layer thickness was about 12 pm.
- Example 3 is a sample sheet as described in Example 2 that was coated analogously within 10 minutes. The determined layer thickness was about 12 pm.
- test panels coated according to Examples 1 and 2 were exposed to a hydrochloric acid atmosphere which forms over an initial charge of 15% strength by weight hydrochloric acid master.
- the oxide ceramic layer on the sample plates was examined for detachment after 144 h and after 300 h of the test period. The oxide ceramic layer on the sample plates was intact after this exposure time.
- test panels coated according to Examples 1 and 2 were exposed to citric acid solutions at concentrations of 2%, 3.5% and 5%.
- the oxide ceramic layer on the sample plates was examined for detachment after 90 h of the test.
- the oxide ceramic layer on the sample plates was intact after this exposure time.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011105455A DE102011105455A1 (de) | 2011-06-24 | 2011-06-24 | Konversionsschichtfreie Bauteile von Vakuumpumpen |
| PCT/EP2012/061491 WO2012175429A1 (de) | 2011-06-24 | 2012-06-15 | Konversionsschichtfreie bauteile von vakuumpumpen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2723923A1 true EP2723923A1 (de) | 2014-04-30 |
| EP2723923B1 EP2723923B1 (de) | 2017-09-06 |
Family
ID=46319764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12728262.2A Active EP2723923B1 (de) | 2011-06-24 | 2012-06-15 | Konversionsschichtfreie bauteile von vakuumpumpen |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20140154503A1 (de) |
| EP (1) | EP2723923B1 (de) |
| JP (1) | JP5957075B2 (de) |
| KR (1) | KR20140043129A (de) |
| CN (1) | CN103620091A (de) |
| DE (1) | DE102011105455A1 (de) |
| TW (1) | TWI560327B (de) |
| WO (1) | WO2012175429A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7053506B2 (ja) | 2016-06-29 | 2022-04-12 | ベーリンゲ、イノベイション、アクチボラグ | タングを挿入するための方法及び装置 |
| CN109707628A (zh) * | 2018-12-17 | 2019-05-03 | 陈鑫 | 真空泵的铝合金泵体结构及用于该泵体加工的珩磨头 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2315792A1 (en) * | 1997-12-17 | 1999-06-24 | Isle Coat Limited | Method of producing hard protective coatings on aluminium alloy items |
| KR100417580B1 (ko) * | 2000-12-29 | 2004-02-05 | 주식회사 엘지이아이 | 스크롤 압축기용 베어링 제조방법 |
| EP1436451B1 (de) | 2001-09-29 | 2008-03-12 | Oerlikon Heberlein Temco Wattwil AG | Verfahren und vorrichtung zur herstellung von kontengarn |
| US7820300B2 (en) * | 2001-10-02 | 2010-10-26 | Henkel Ag & Co. Kgaa | Article of manufacture and process for anodically coating an aluminum substrate with ceramic oxides prior to organic or inorganic coating |
| US7452454B2 (en) * | 2001-10-02 | 2008-11-18 | Henkel Kgaa | Anodized coating over aluminum and aluminum alloy coated substrates |
| US6916414B2 (en) * | 2001-10-02 | 2005-07-12 | Henkel Kommanditgesellschaft Auf Aktien | Light metal anodization |
| US7578921B2 (en) | 2001-10-02 | 2009-08-25 | Henkel Kgaa | Process for anodically coating aluminum and/or titanium with ceramic oxides |
| DE10163864A1 (de) * | 2001-12-22 | 2003-07-10 | Leybold Vakuum Gmbh | Beschichtung von Gegenständen |
| JP4694771B2 (ja) * | 2003-03-12 | 2011-06-08 | 財団法人国際科学振興財団 | ポンプおよびポンプ部材の製造方法 |
| GB0317126D0 (en) * | 2003-07-23 | 2003-08-27 | Boc Group Plc | Coating |
| DE202004010821U1 (de) * | 2003-07-23 | 2004-12-23 | The Boc Group Plc, Windlesham | Vakuumpumpenbauteil |
| KR100872679B1 (ko) * | 2004-11-05 | 2008-12-10 | 니혼 파커라이징 가부시키가이샤 | 금속의 전해 세라믹 코팅방법, 금속의 전해 세라믹 코팅용 전해액 및 금속재료 |
| DE102005040648A1 (de) | 2005-08-27 | 2007-03-01 | Leybold Vacuum Gmbh | Beschichtete Gegenstände |
| DE102008024764A1 (de) * | 2008-05-23 | 2009-11-26 | Oerlikon Leybold Vacuum Gmbh | Mehrstufige Vakuumpumpe |
| US9701177B2 (en) * | 2009-04-02 | 2017-07-11 | Henkel Ag & Co. Kgaa | Ceramic coated automotive heat exchanger components |
| WO2010116747A1 (ja) * | 2009-04-10 | 2010-10-14 | 株式会社アルバック | メカニカルブースターポンプ、ターボ分子ポンプ又はドライポンプを構成する部材の表面処理方法及びこの表面処理方法により処理されたメカニカルブースターポンプ、ターボ分子ポンプ又はドライポンプ |
-
2011
- 2011-06-24 DE DE102011105455A patent/DE102011105455A1/de not_active Withdrawn
-
2012
- 2012-06-06 TW TW101120284A patent/TWI560327B/zh active
- 2012-06-15 CN CN201280028749.6A patent/CN103620091A/zh active Pending
- 2012-06-15 KR KR1020147001902A patent/KR20140043129A/ko not_active Ceased
- 2012-06-15 WO PCT/EP2012/061491 patent/WO2012175429A1/de not_active Ceased
- 2012-06-15 JP JP2014516291A patent/JP5957075B2/ja active Active
- 2012-06-15 US US14/126,715 patent/US20140154503A1/en not_active Abandoned
- 2012-06-15 EP EP12728262.2A patent/EP2723923B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20140154503A1 (en) | 2014-06-05 |
| EP2723923B1 (de) | 2017-09-06 |
| KR20140043129A (ko) | 2014-04-08 |
| CN103620091A (zh) | 2014-03-05 |
| JP2014520211A (ja) | 2014-08-21 |
| WO2012175429A1 (de) | 2012-12-27 |
| JP5957075B2 (ja) | 2016-07-27 |
| DE102011105455A1 (de) | 2013-01-10 |
| TWI560327B (en) | 2016-12-01 |
| TW201303090A (zh) | 2013-01-16 |
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