CN103540977A - Method for preparing high-gas tightness nickel-copper alloy for travelling wave tube - Google Patents
Method for preparing high-gas tightness nickel-copper alloy for travelling wave tube Download PDFInfo
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- CN103540977A CN103540977A CN201310476000.4A CN201310476000A CN103540977A CN 103540977 A CN103540977 A CN 103540977A CN 201310476000 A CN201310476000 A CN 201310476000A CN 103540977 A CN103540977 A CN 103540977A
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- nickel
- copper alloy
- gas tightness
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- electrodeposition
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Abstract
The invention discloses a method for preparing a high-gas tightness nickel-copper alloy for a travelling wave tube and belongs to the technical field of alloy material preparation. The method solves the problem of high difficulty of high-gas tightness nickel-copper alloy preparation. The method comprises the following steps of before electrodeposition, polishing an anode pure-nickel plate and a cathode stainless steel plate by sand paper to remove surface oxides, carrying out ultrasonic cleaning orderly by acetone, alcohol and distilled water to remove impurities such as oil stain on the anode and cathode surfaces and to obtain the clean surfaces, and carrying out nickel-copper alloy electrodeposition by an electroplate liquid comprising 305-350g/L of nickel sulfate hexahydrate, 20-50g/L of copper sulfate pentahydrate, 75-90g/L of sodium citrate, 7-12g/L of sodium chloride, 35-50g/L of boric acid and the balance water under the conditions of a pH value of 5-7, current density of 4-8A/dm<2>, a temperature of 25-45 DEG C, electrodeposition time of 5-15h and a stirring speed of 50-120r/min. The method can prepare the high-gas tightness nickel-copper alloy and has simple processes and easily controllable technological parameters.
Description
Technical field
The invention belongs to alloy material preparing technical field, a kind of method of high-air-tightness corronel for travelling-wave tubes of preparing is provided, solved high-air-tightness block corronel and prepared difficult problem.
Background technology
Travelling-wave tubes is the main cast of broadband, high power amplifier in microwave vacuum device, is widely used in the fields such as data corresponding, electronic countermeasure, prior-warning plane, fire control radar, accurate guidance, has irreplaceable effect in military electronics equipment.Travelling-wave tubes key part amplifier chain often adopts the preparation of corronel material, and the normal operation of Material Used in Travelling Wave Tube Amplifier Chain depends on its inner good resistance to air loss, and therefore, the vacuum-tightness of corronel directly has influence on the performance of Material Used in Travelling Wave Tube Amplifier Chain.But problem is to adopt traditional casting technique to prepare corronel, the residual larger internal stress of the inner meeting of not only complex process, and foundry goods, forms tiny crack, in use easy to crack, affects the actual use properties of corronel foundry goods.In fusion process, the fusing point of nickel and copper differs large (fusing point of nickel is 1452 ℃, and the fusing point of copper is 1083 ℃), when the melting that meets nickel requires, copper at high temperature smelting time is long, causes copper to react generation cupric oxide with oxygen and is mingled with, and causes material structure not fine and close; During at high temperature melting of corronel, easily air-breathing, cause easily producing pore in foundry goods, be difficult to guarantee material microcell even density and zero defect.In addition,, in the manufacturing processed of workpiece, after last procedure-annealing in hydrogen atmosphere art breading, impurity in corronel (carbon, silicon, manganese etc.) is many, and skewness, causes the vacuum-tightness of finished product inconsistent; At high temperature, the carbon in alloy and oxygen impurities and hydrogen generation chemical reaction produce organism and cover finished surface, and impurity silicon, manganese are oxidized, and oxide compound segregation, in crystal boundary, causes finished product that transgranular fracture easily occurs, and makes the resistance to air loss variation of corronel.Therefore for the corronel of high-air-tightness, need to adopt special method to prepare.
Summary of the invention
The gas leakage problem existing with corronel in order to solve travelling-wave tubes, the invention provides a kind of method of preparing high airtight corronel.
In order to realize foregoing invention object, the present invention has adopted following processing step:
(1) pre-treatment
Before galvanic deposit, by anode pure nickel plate and the sand papering of negative electrode stainless steel plate, to remove oxide on surface, carry out ultrasonic cleaning successively afterwards with acetone, alcohol and distilled water, wipe oil etc. are attached to the lip-deep impurity of cathode and anode, obtain clean surface.
(2) electric deposition nickel copper alloy
The composition of electroplate liquid: nickel sulfate hexahydrate 305～350g/L, cupric sulfate pentahydrate 20～50g/L, Trisodium Citrate 75～90g/L, sodium-chlor 7～12g/L, boric acid 35～50g/L, all the other are water.
Processing parameter: pH value 5～7, current density 4～8A/dm
2, 25～45 ℃ of temperature, electrodeposition time 5～15h, stirring velocity 50～120r/mim.
The invention has the advantages that: adopt electrodeposition technology, in deposition process, select optimal processing parameter, can prepare high-air-tightness block corronel.
Embodiment
Before galvanic deposit, by anode pure nickel plate and the 2000# sand papering of negative electrode stainless steel plate, to remove oxide on surface, with acetone, alcohol and distilled water, carry out ultrasonic cleaning successively afterwards, wipe oils etc. are attached to the lip-deep impurity of cathode and anode, obtain clean surface.
Example 1: press the composition preparation electroplate liquid of electroplate liquid in table 1 and set electro-deposition process parameter, then according to above-mentioned processing step electric deposition nickel copper alloy.
The concrete implementation condition of table 1
Example 2: press the composition preparation electroplate liquid of electroplate liquid in table 2 and set electro-deposition process parameter, then according to above-mentioned processing step electric deposition nickel copper alloy.
The concrete implementation condition of table 2
Example 3: press the composition preparation electroplate liquid of electroplate liquid in table 3 and set electro-deposition process parameter, then according to above-mentioned processing step electric deposition nickel copper alloy.The concrete implementation condition of table 3
Claims (1)
1. prepare a method for high-air-tightness corronel for travelling-wave tubes, it is characterized in that: the processing step adopting is as follows:
(1) pre-treatment
Before galvanic deposit, by anode pure nickel plate and the sand papering of negative electrode stainless steel plate, to remove oxide on surface, select successively afterwards acetone, alcohol and distilled water to carry out ultrasonic cleaning, remove and be attached to the lip-deep impurity of cathode and anode, obtain clean surface;
(2) electric deposition nickel copper alloy
The composition of electroplate liquid: nickel sulfate hexahydrate 305～350g/L, cupric sulfate pentahydrate 20～50g/L, Trisodium Citrate 75～90g/L, sodium-chlor 7～12g/L, boric acid 35～50g/L, all the other are water;
Processing parameter: pH value 5～7, current density 4～8A/dm
2, 25～45 ℃ of temperature, electrodeposition time 5～15h, stirring velocity 50～120r/mim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476000.4A CN103540977A (en) | 2013-10-12 | 2013-10-12 | Method for preparing high-gas tightness nickel-copper alloy for travelling wave tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476000.4A CN103540977A (en) | 2013-10-12 | 2013-10-12 | Method for preparing high-gas tightness nickel-copper alloy for travelling wave tube |
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| CN103540977A true CN103540977A (en) | 2014-01-29 |
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| CN201310476000.4A Pending CN103540977A (en) | 2013-10-12 | 2013-10-12 | Method for preparing high-gas tightness nickel-copper alloy for travelling wave tube |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805484A (en) * | 2015-05-08 | 2015-07-29 | 武汉钢铁(集团)公司 | Production method for Cu-Ni/Ni-Ag double-composite coating extra-thin steel strip |
| CN105018986A (en) * | 2015-08-11 | 2015-11-04 | 江苏金曼科技有限责任公司 | Cyanide-free and phosphorus-free alloy bottoming liquid |
| CN110791792A (en) * | 2019-11-11 | 2020-02-14 | 中国科学院电子学研究所 | Method for composite copper plating of inner wall of coupler corrugated pipe and coupler corrugated pipe |
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| GB957808A (en) * | 1962-02-09 | 1964-05-13 | Ass Elect Ind | Electrodeposition of copper-nickel alloy |
| JPS62164888A (en) * | 1986-01-14 | 1987-07-21 | Mitsubishi Chem Ind Ltd | Copper-zinc-nickel alloy electroplating bath composition |
| JPS648294A (en) * | 1987-06-27 | 1989-01-12 | Tadao Sakaguchi | Wire plated with copper-nickel alloy |
| RO103244A2 (en) * | 1988-12-29 | 1991-11-25 | Inst Cercetare Si Proiectare T | Method for electrochemical coating of non-corrosive steel with ni-cu alloys |
| CN102899694A (en) * | 2012-03-27 | 2013-01-30 | 南京造币有限公司 | Copper-nickel alloy-plated coin product and preparation method thereof |
| CN103097580A (en) * | 2010-08-18 | 2013-05-08 | 新日铁住金株式会社 | Steel sheet for can with excellent corrosion resistance |
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2013
- 2013-10-12 CN CN201310476000.4A patent/CN103540977A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB957808A (en) * | 1962-02-09 | 1964-05-13 | Ass Elect Ind | Electrodeposition of copper-nickel alloy |
| JPS62164888A (en) * | 1986-01-14 | 1987-07-21 | Mitsubishi Chem Ind Ltd | Copper-zinc-nickel alloy electroplating bath composition |
| JPS648294A (en) * | 1987-06-27 | 1989-01-12 | Tadao Sakaguchi | Wire plated with copper-nickel alloy |
| RO103244A2 (en) * | 1988-12-29 | 1991-11-25 | Inst Cercetare Si Proiectare T | Method for electrochemical coating of non-corrosive steel with ni-cu alloys |
| CN103097580A (en) * | 2010-08-18 | 2013-05-08 | 新日铁住金株式会社 | Steel sheet for can with excellent corrosion resistance |
| CN102899694A (en) * | 2012-03-27 | 2013-01-30 | 南京造币有限公司 | Copper-nickel alloy-plated coin product and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 周勋 等: "行波管放大链中关键气密材料的失效分析", 《材料导报》, vol. 21, no. 9, 15 September 2007 (2007-09-15), pages 157 - 159 * |
| 王瑞永 等: "影响镍铜合金电镀层成分的因素", 《电镀与涂饰》, vol. 30, no. 8, 15 August 2011 (2011-08-15), pages 13 - 16 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805484A (en) * | 2015-05-08 | 2015-07-29 | 武汉钢铁(集团)公司 | Production method for Cu-Ni/Ni-Ag double-composite coating extra-thin steel strip |
| CN104805484B (en) * | 2015-05-08 | 2017-04-12 | 武汉钢铁(集团)公司 | Production method for Cu-Ni/Ni-Ag double-composite coating extra-thin steel strip |
| CN105018986A (en) * | 2015-08-11 | 2015-11-04 | 江苏金曼科技有限责任公司 | Cyanide-free and phosphorus-free alloy bottoming liquid |
| CN110791792A (en) * | 2019-11-11 | 2020-02-14 | 中国科学院电子学研究所 | Method for composite copper plating of inner wall of coupler corrugated pipe and coupler corrugated pipe |
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Application publication date: 20140129 |