WO2005121406A1 - 構造体およびその電食防止方法 - Google Patents
構造体およびその電食防止方法 Download PDFInfo
- Publication number
- WO2005121406A1 WO2005121406A1 PCT/JP2005/009222 JP2005009222W WO2005121406A1 WO 2005121406 A1 WO2005121406 A1 WO 2005121406A1 JP 2005009222 W JP2005009222 W JP 2005009222W WO 2005121406 A1 WO2005121406 A1 WO 2005121406A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- outer end
- metal element
- electrolytic corrosion
- contact
- covering
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
- B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
-
- 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
- Y10T428/12007—Component of composite having metal continuous phase interengaged with nonmetal continuous phase
Definitions
- the present invention relates to a structure capable of effectively preventing electrolytic corrosion between different kinds of metals and a method for preventing the electrolytic corrosion.
- any device is constituted by a combination of members made of metal.
- the types of metals used also vary widely depending on the performance required for each part. Therefore, it is not unusual for a configuration in which dissimilar metal members are arranged close to each other in an apparatus.
- Japanese Patent Application Laid-Open Nos. Hei 6-136392, Japanese Patent Publication No. 2003-64492, and Japanese Patent Publication No. 2003-254814 disclose between dissimilar metal members. It discloses a method of suppressing galvanic corrosion by preventing the dissimilar metal members from coming into direct contact with an insulating material. Also, Japanese Patent Application Laid-Open No. Hei 6-2877778 discloses a method in which a conductive coating material is applied to cover the boundary between dissimilar metal members arranged adjacent to each other, and the dissimilar metal members are electrically short-circuited. However, it discloses a method for suppressing electrolytic corrosion.
- an insulating material when interposed between dissimilar metal members as disclosed in Japanese Patent Application Laid-Open No. 6-13695, etc., it may be caused by fastening with bolts or vibration during use. There is a possibility that the insulating material may be damaged and defects may occur. When a defect occurs, water or the like intrudes from the defective part, which leads to the progress of electrolytic corrosion.In addition, compressors and other equipment that require airtightness may cause pressure leaks from the defective part. It is not desirable to use it.
- the present invention has been made in view of the above problems, and has as its object to provide a structure capable of effectively preventing electrolytic corrosion between dissimilar metal members and a method for preventing the electrolytic corrosion.
- a structure of the present invention that solves the above-mentioned problems includes a first member having a first outer end mainly composed of a first metal element, and a second metal element different from the first metal element as a main component.
- a second member having a second outer end disposed in contact with the first outer end; and a first outer end formed of a coating film made of a fluorine-based polymer at least on the outer surface.
- a covering member for covering at least a part of the second outer end portion so as to cover a contact portion with the second outer end portion.
- the method for preventing electrolytic corrosion of a structure mainly comprises a first member having a first outer end mainly composed of a first metal element, and a second metal element different from the first metal element.
- a second member having a second outer end disposed as a component and in contact with the first outer end; and a second member having at least an outer surface made of a coating film made of a fluorine-based polymer substance.
- a covering member for covering at least a part of both the outer end portion and the second outer end portion so as to cover a contact portion between the outer end portion and the second outer end portion, wherein the first outer end portion is connected to the first outer end portion by the covering member. Electrical conduction between the second outer end and the second outer end is prevented to prevent the progress of electrolytic corrosion that may occur across a contact portion between the first outer end and the second outer end.
- the covering member having the above-described configuration allows the penetration or attachment of water or the like for electrically connecting the first outer end and the second outer end. Therefore, it is possible to prevent electric erosion that occurs across the contact portion.
- the covering member may cover at least a part of the first outer end portion and the second outer end portion so as to cover a contact portion between the first outer end portion and the second outer end portion. There is no need to intervene any intervening material such as an insulator between them.
- the covering member is made of a coating film, the covering member can be easily covered by a normal coating method even if the structure has a complicated shape.
- first and second are merely names for convenience of distinguishing members and the like.
- first metal element or the second metal element is an electrically noble metal (a metal having a low reference potential) or a noble metal (a metal having a high reference potential). If it is necessary to distinguish them for convenience, the first metal element may be a noble metal (for example, Mg) and the second metal element may be a noble metal (for example, Fe).
- FIG. 1 is a diagram schematically showing a test piece made of a dissimilar metal member of an example and a comparative example, and is a side view of the test piece as viewed from the outside.
- FIG. 2 is a diagram schematically showing test pieces made of dissimilar metal members of Examples and Comparative Examples, and is a partially enlarged cross-sectional view of FIG. 1 cut in an axial direction.
- FIG. 3 is a photograph taken from the axial direction side with the surface corresponding to the contact portion of the Mg alloy member in Example 1 as a front face, and is a drawing substitute photograph showing a state of corrosion.
- FIG. 4 shows that the surface corresponding to the contact portion of the Mg alloy member in Comparative Example 2 is the front surface.
- 5 is a photograph taken from the axial direction side, and is a drawing substitute photograph showing the state of corrosion.
- FIG. 5 is a schematic diagram illustrating the progress of electrolytic corrosion in dissimilar metal members. BEST MODE FOR CARRYING OUT THE INVENTION
- the first member has a first outer end mainly composed of the first metal element
- the second member has a second outer end mainly composed of a second metal element different from the first metal element.
- the shape and material of the first outer end and the second outer end are not limited as long as they are made of dissimilar metals. This is because as long as the dissimilar metal is used, electrolytic corrosion can occur more or less between the two.
- the first metal element (or the second metal element) is Mg, that is, when the first outer end is a magnesium-magnesium alloy, the electrolytic corrosion is more likely to proceed. It is valid.
- the second metal element is not particularly limited, and may be any of Al, Zn, Fe, and Cu. Among them, Fe is often used in ordinary devices and is easily used to form a local battery. is there.
- first member and the second member it is sufficient for the first member and the second member to have the outer end portions as described above. That is, it is not necessary that the entirety be made of a metal material.
- a portion other than the outer end portion may be a composite member made of resin or the like.
- the form and function of both members are not limited.
- the second outer end is disposed in contact with the first outer end, but may be in any of a point contact, a line contact, and a surface contact. Further, the first member and the second member may not be in direct contact with each other, or may be in a state of being electrically connected by fasteners such as bolts. Also, as shown in FIG. 5, both end faces (11, 21) may not be on the same plane and may protrude.
- the specific region of the outer end in the present invention is not specified. This is because the range in which electrolytic corrosion can occur differs depending on the form of the member, the use environment, and the like. If it dares to say, it will be the area including the contact part which at least both contacted.
- the structure of the present invention includes a compressor, an engine block, a hydraulic pump, and the like.
- a compressor consisting of a front housing, a cylinder, and a rear housing, in which a gasket is interposed between the cylinder and the rear housing, a rear housing mainly containing Mg and a gasket mainly containing Fe are used. If used, if water droplets such as rainwater or dew adhere to the outer peripheral surface and the electrolytic corrosion progresses, the rear housing (Mg) may be corroded and pressure leaks may occur. Significantly affected.
- FIG. 5 shows a partially enlarged cross-sectional view when the first outer end portion 10 of the first member 1 and the second outer end portion 20 of the second member are arranged in contact with each other.
- the metal constituting the first member 1 is magnesium
- the metal constituting the second member 2 is iron.
- water droplets such as rainwater and dew condensation may be formed on the outer peripheral side (11, 21) of the first member 1 and the second member 2 while straddling the contact portion 50 of the first member 1 and the second member 2. May adhere.
- a local battery in which the first member 1 and the second member 2 which are dissimilar metal members are electrodes and the water droplets 4 are an electrolyte is formed.
- Mg having a very low corrosion potential becomes Mg 2 + and begins to elute into the water droplet 4. That is, the electrolytic corrosion of the first member 1 made of magnesium proceeds.
- water droplets 4 enter between the contact surfaces of the contact portions 50 the same applies. Electric erosion progresses.
- the covering member of the present invention can be generated so as to obstruct electrical conduction between the first outer end and the second outer end and straddle a contact portion between the first outer end and the second outer end. It prevents the progress of electrolytic corrosion. That is, the covering member eliminates the continuity of the electrolytic solution such as water for electrically connecting the first outer end and the second outer end.
- the coating member has at least the outer surface made of a coating film made of a fluorine-based polymer substance.
- the “outer surface portion” refers to a surface portion of a covered member to which water or the like can adhere. That is, for example, when the coating film is in the shape of a strip, the outer surface portion includes not only a face formed in the width direction and the length direction of the strip but also a side face in the thickness direction. Further, the covering member needs to cover at least a part of the first outer end and the second outer end so as to cover a contact portion between the first outer end and the second outer end.
- At least the outer surface of a coating film made of a fluorine-based polymer substance has a moisture permeability * At least the outer surface portion has low water penetration and is a high-density coating film.
- continuation of the electrolytic solution for electrically connecting the two members is prevented. That is, electrolytic corrosion can be prevented well.
- a coating film containing a silicon-based polymer such as silicon rubber or silicone resin depending on the silicon content, water penetrates into the coating film and the contact portion or between the two members in the coating film. Since a series of electrically connected electrolytic solutions is formed, electrolytic corrosion cannot be effectively suppressed.
- the covering member is required to have adhesion to a dissimilar metal member. If the covering member has high adhesion, it is possible to prevent intrusion of water or the like from the interface between the dissimilar metal member and the covering member. For this reason, adhesion is high only with a coating made of a fluoropolymer. If it is poor, it may be a multi-layered structural member having an underlayer that can enhance the adhesion between the two and prevent peeling. The adhesion increases as the surface roughness of the dissimilar metal member increases. However, when the surface roughness is high, electrolytic corrosion tends to occur.
- the covering member includes a seal layer that is cured by applying a fluorine-based sealant.
- This seal layer may have a single-layer structure or a multi-layer structure, but the seal layer made of a fluorine-based sealant is a high-density coating film having low moisture permeability and low water permeability, and has a single layer structure. It also has excellent adhesion to dissimilar metal members and does not peel off due to vibration. Also, the heat resistance is good. Therefore, the covering member including the seal layer is suitable for a dissimilar metal member used in a device such as a compressor that is used under high-temperature conditions or generates vibration during use of the device. Further, as a fluorine-based sealant suitable as a seal layer of the covering member, fluorosilicone rubber and the like can be mentioned, and liquid fluororubber is particularly preferable.
- the thickness of the seal layer is 100 ⁇ m or more if a fluorine-based sealant is used. It is preferred that When the thickness of the sealing layer is 100 m or more, it is sufficient to prevent intrusion of water and the like, and the effect of suppressing electrolytic corrosion can be obtained well.
- the shape and dimensions of the covering member are not particularly limited as long as at least a portion of the contact portion between the first outer end portion and the second outer end portion to which water or the like can adhere is covered.
- the width of the covering member depends on the shape of the dissimilar metal member and the size of the attached water droplet, but the width across the contact portion is preferably 1 Omm or more. If the width of the covering member is 10 mm or more, even if water or the like adheres, the continuity of the electrolytic solution such as water that electrically connects the first outer end and the second outer end is effective. Can be eliminated The formation of a local battery using a dissimilar metal member as an electrode can be sufficiently blocked or suppressed.
- the covering member is a coating film
- the portion of the dissimilar metal member where the covering member is to be formed is a portion having a complicated shape (for example, the contact portion has a step as shown in FIG. 5).
- the coating can be obtained by applying the coating to the target area by a normal coating method such as a coating method, flow coating method, spray coating method, spin coating method, roll coating method, etc., and drying and curing. .
- the optimum drying conditions and the like may be appropriately selected according to the type of the paint.
- the structure of the present invention is not limited to the above embodiment, and for example, another configuration such as forming a protective layer for protecting the covering member may be added.
- the present invention can be understood not only as the above-described structure, but also as a method for preventing electrolytic corrosion.
- FIG. 1 and 2 are diagrams schematically showing a test piece made of a dissimilar metal member
- FIG. 1 is a side view of the test piece viewed from the outside
- FIG. FIG. 2 is a partially enlarged cross-sectional view of the test piece of FIG. 1 cut in an axial direction.
- a test piece having a dissimilar metal member was prepared.
- This test piece is composed of a Mg alloy member 1 and a Fe alloy member 2.
- the Fe alloy member 2 is a 16 ⁇ 16 mm ⁇ 16 ram ⁇ 16 mm cold-rolled steel plate SPCC (JIS) Fe alloy block. extend.
- the bolts 6 were screwed into the screw holes 16 and 26 of the Mg alloy member 1 and the Fe alloy member 2 and were coaxially fastened so as to be in contact with each other.
- the outer end 10 of the Mg alloy member 1 and the outer end 20 of the Fe alloy member 2 come into contact with each other, and the end faces 11 and 21 of the outer ends 10 and 20 are located on the same plane.
- a test piece made of a heterogeneous prismatic metal member was obtained.
- a covering member 3 was formed on the outer peripheral surface of the test piece so as to cover a contact portion 50 between the outer end portion 10 of the Mg alloy member 1 and the outer end portion 20 of the Fe alloy member 2.
- the covering member 3 includes a contact end portion 51 linearly present on the outer peripheral surface side of the test piece among contact portions 50 with the outer end portions 10 and 20, and an end surface 11 of the outer end portion 10
- the contact part 50 is covered by covering a part of the end face 21 and a part of the end face 21 of the outer end part 20.
- the covering member 3 is formed of a coating film of a liquid fluororubber (SIFEL 600 series manufactured by Shin-Etsu Chemical Co., Ltd.).
- the liquid fluororubber was applied to the outer peripheral surface of the test piece so as to have a width of 10 mm (centering on the contact end 51), and dried and cured at 150 ° C for 1 hour.
- a coating film composed of a system-based polymer substance was obtained.
- the film thickness of the covering member 3 was 100 to 200 im.
- Example 1 The test piece of Example 1 was coated with a commercially available silicone-based sealant The coating was dried at a temperature for 5 days and cured to form a coating film similar to that of Example 1. The obtained member was used as Sample B.
- Example 1 The test piece of Example 1 was coated with a fluorine-containing silicone resin-based coating material as a coating member 3, dried at room temperature for 24 hours, and cured to form a coating film similar to that of Example 1. The obtained member was used as Sample C.
- a salt spray test was performed to evaluate the effect of preventing electrolytic corrosion.
- the salt water concentration 5%
- spray amount 1-2 ml / hr
- spray pressure 0.098 ⁇ 0.002MPa
- test temperature 35 ° C
- air saturation machine 47 ° C
- FIGS. 3 and 4 are photographs of Sample A and Sample C taken from the axial direction with the surface corresponding to the contact portion 50 of the Mg alloy member 1 facing the front, showing the state of corrosion. It is a drawing substitute photograph.
- the samples A and B are sufficiently covered with the covering member 3 having a certain width over the entire periphery of the contact end portion 51. Therefore, even if water droplets adhere to the surface of the test piece, electrical conduction should not be formed between the end faces 11 and 21 and no electrolytic corrosion should occur.
- the coating member 3 of the sample A is made of a coating film made of a fluorine-based polymer substance, and the salt water infiltrates from the interface between the sample pieces (1, 2) and the coating member 3 and from the surface of the coating member 3. Was effectively prevented, and as a result, electrolytic corrosion of the Mg alloy member 1 was prevented.
- the covering member 3 using the silicon-based sealant as in the sample B the penetration of the salt water could not be prevented.
- Sample C a fluorine-containing silicone resin paint is used, and a fluorine-based polymer substance is present in a part of the covering member 3, but salt water is partially removed from the portion in which the silicone resin is present. Due to the intrusion, large corrosion was locally formed.
- the above dissimilar metal members are, for example, a rear housing mainly composed of Mg. Since a combination of the same type of alloy metal as the compressor having the gasket containing Fe as the main component is used, the evaluation was performed using the covering members described in Examples and Comparative Examples in the above compressor. But it goes without saying that similar results can be obtained.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Compressor (AREA)
- Gasket Seals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/629,376 US20070237974A1 (en) | 2004-06-10 | 2005-05-13 | Structural Body and Electric-Corrosion Prevention Method for the Same |
EP05741282A EP1767669A4 (en) | 2004-06-10 | 2005-05-13 | STRUCTURE AND METHOD FOR PREVENTING ELECTROLYTIC CORROSION OF THE STRUCTURE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-173090 | 2004-06-10 | ||
JP2004173090A JP2005350733A (ja) | 2004-06-10 | 2004-06-10 | 構造体およびその電食防止方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005121406A1 true WO2005121406A1 (ja) | 2005-12-22 |
Family
ID=35503088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/009222 WO2005121406A1 (ja) | 2004-06-10 | 2005-05-13 | 構造体およびその電食防止方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070237974A1 (ja) |
EP (1) | EP1767669A4 (ja) |
JP (1) | JP2005350733A (ja) |
WO (1) | WO2005121406A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103925194A (zh) * | 2013-07-12 | 2014-07-16 | 贵州兴化化工股份有限公司 | 一种氨泵缸体改造方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0592521U (ja) * | 1992-02-12 | 1993-12-17 | 日本ドライブイット株式会社 | 耐電蝕性アンカーナット |
JPH1137296A (ja) * | 1997-07-18 | 1999-02-12 | Nippon Gasket Co Ltd | 金属製ガスケット |
JP2002357183A (ja) * | 2001-05-30 | 2002-12-13 | Toyota Industries Corp | 圧縮機 |
JP2003064492A (ja) * | 2001-08-22 | 2003-03-05 | Honda Motor Co Ltd | マグネシウム合金部材の電食防止構造および電食防止方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0610919A (ja) * | 1992-06-26 | 1994-01-21 | Ishikawajima Harima Heavy Ind Co Ltd | 異種金属接合継手の形成方法 |
JP2002174378A (ja) * | 2000-12-01 | 2002-06-21 | Raisen:Kk | 配管用電食防止継ぎ手 |
JP2003118037A (ja) * | 2001-10-17 | 2003-04-23 | Nisshin Steel Co Ltd | 熱可塑性樹脂被覆金属板,熱融着金属接合体の製造方法及び熱融着金属接合体の分離・解体方法 |
JP2004010808A (ja) * | 2002-06-10 | 2004-01-15 | Shin Etsu Chem Co Ltd | フッ素ゴム組成物及びその製造方法 |
-
2004
- 2004-06-10 JP JP2004173090A patent/JP2005350733A/ja not_active Withdrawn
-
2005
- 2005-05-13 US US11/629,376 patent/US20070237974A1/en not_active Abandoned
- 2005-05-13 WO PCT/JP2005/009222 patent/WO2005121406A1/ja not_active Application Discontinuation
- 2005-05-13 EP EP05741282A patent/EP1767669A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0592521U (ja) * | 1992-02-12 | 1993-12-17 | 日本ドライブイット株式会社 | 耐電蝕性アンカーナット |
JPH1137296A (ja) * | 1997-07-18 | 1999-02-12 | Nippon Gasket Co Ltd | 金属製ガスケット |
JP2002357183A (ja) * | 2001-05-30 | 2002-12-13 | Toyota Industries Corp | 圧縮機 |
JP2003064492A (ja) * | 2001-08-22 | 2003-03-05 | Honda Motor Co Ltd | マグネシウム合金部材の電食防止構造および電食防止方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1767669A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1767669A1 (en) | 2007-03-28 |
JP2005350733A (ja) | 2005-12-22 |
EP1767669A4 (en) | 2009-01-14 |
US20070237974A1 (en) | 2007-10-11 |
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