CN1817521A - Production of composite copper powder with nickle coating - Google Patents
Production of composite copper powder with nickle coating Download PDFInfo
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- CN1817521A CN1817521A CN 200610065029 CN200610065029A CN1817521A CN 1817521 A CN1817521 A CN 1817521A CN 200610065029 CN200610065029 CN 200610065029 CN 200610065029 A CN200610065029 A CN 200610065029A CN 1817521 A CN1817521 A CN 1817521A
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- nickel
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Abstract
A process for preparing the Cu-in-Ni particles by wet metallurgical method includes such steps as preparing the solution of nickel sulfate, heating, adding Cu powder while stirring, regulating pH=11.5-13.5, slowly adding diamine while stirring, reaction, filtering, washing and vacuum drying.
Description
Technical field
A kind of nickel coats the production method of the composite powder of copper, relates to a kind of metal dust that adopts Wet-process metallurgy method to prepare powder used in metallurgy, has particularly coated the preparation method of the metal composite powder of nickel on the copper powder surface.
Background technology
In the sintered metal product, the consumption of premixed powder is increasing.When parts prepare, copper powder is mixed with other metal powder when carrying out powder metallurgy, the various metal dusts of use must evenly mix, otherwise influential to the quality of parts.In powdered metal parts was made, a large amount of metal dusts of use generally, all were that several powder are used, and amount according to demand just mixes after quantitatively in advance, carries out the sintering compacting again.When batch mixing, it is inhomogeneous that local mixing always takes place inevitably, makes the quality of parts be affected.
Summary of the invention
The objective of the invention is the deficiency at above-mentioned prior art existence, providing a kind of has metal dust, the elimination powder metallurgy of nickel to prepare the evenly production method of the composite powder of batch mixing nickel coating copper of parts in the copper powder coated with uniform.
The objective of the invention is to be achieved through the following technical solutions.
A kind of nickel coats the production method of the composite powder of copper, it is characterized in that preparation process at first prepares the nickel sulfate solution of 35～45g/l, be heated to 80～90 ℃, under agitation add copper powder, regulator solution pH to 11.5～13.5, under agitation the amount by every liter of nickel sulfate solution adding 75～95ml slowly adds hydrazine, reaction is to finishing, filtration washing, 60～80 ℃ of vacuum drying obtain nickel coated copper powder.
A kind of nickel coats the production method of the composite powder of copper, it is characterized in that being with solid sulphuric acid nickel or nickel sulfate solution preparation nickel sulfate solution.
A kind of nickel coats the production method of the composite powder of copper, it is characterized in that adding the granularity of copper powder less than 0.074mm.
A kind of nickel coats the production method of the composite powder of copper, and the pH that it is characterized in that solution regulates with the NaOH solution of 2mol/l.
A kind of nickel coats the production method of the composite powder of copper, and the addition that it is characterized in that copper powder is that the theoretical amount ratio by the ambrose alloy in the coated composite powder that makes adds.
Adopting method of the present invention, is core with the electrolytic copper powder, is elemental nickel with the nickel of hydrazine reduction nickel sulfate solution, forms one deck nickel film at the copper powder surface deposition, covers the surface of copper powder particle, forms the nickel cladding powder.Preparation technology is simple, and reaction is fast, coating is complete.Can prepare nickel content and coat copper powder at the nickel of 17%-25%, the cladding powder of preparation has the characteristic that the common mechanical mixed-powder does not have, and as being easy to alloying in the powder metallurgy, segregation etc. does not take place in the use.If nickel is coated on the copper powder outside, make nickel form thin film in the copper powder outside, can thoroughly change two kinds of uneven problems of powder, simultaneously, this cladding powder can replace the copper powder of sneaking into nickel fully, and reaches better effect.Nickel coated copper powder is similar to general copper powder in the processing performance of the metallurgical parts that makes powder, and briquettability is good, and the color of sintered part is more shallow, and its hardness is higher than red copper, and approximate sintered bronze is lower than sinterred brass.It is the normal a kind of cladding powder that adopts during present metallurgical parts is made.
The specific embodiment
A kind of nickel coats the production method of the composite powder of copper, it is characterized in that preparation process is at first with the nickel sulfate solution of solid sulphuric acid nickel or nickel sulfate solution preparation 35～45g/l, be heated to 80～90 ℃, under agitation add the copper powder of granularity less than 0.074mm, regulator solution pH to 11.5～13.5, under agitation the amount by every liter of nickel sulfate solution adding 75～95ml slowly adds hydrazine, reaction is to finishing, filtration washing, 60～80 ℃ of vacuum drying obtain nickel coated copper powder.
Below in conjunction with example method of the present invention is further described.
Example 1
3 liters of the nickel sulfate solutions of solid sulphuric acid nickel preparation sulfur acid nickel 35g/l under the measurement of acidometer, are 11.5 with the NaOH regulator solution pH of 2mol/l, heated solution to 80 ℃, under agitation add the 100g washes clean-0.074mm, pine is than being 1.78g/cm
3Copper powder, slowly add the 240ml hydrazine, to drip the NaOH solution of 2mol/l in the course of reaction at any time, to keep pH value of solution constant, after reaction is finished, stop to stir, filter, be washed with distilled water to the washing lotion sulfate radical-free, put in the vacuum drying chamber that is warming up to 80 ℃ dry 2 hours into, be nickel coated copper powder, its nickel content is 17%, surplus is a copper, and pine is than being 1.81g/cm
3
Example 2
With 3 liters of the nickel sulfate solutions of nickel sulfate solution preparation sulfur acid nickel 40g/l, under the measurement of acidometer, be 12 with the NaOH regulator solution pH of 2mol/l, heated solution to 85 ℃ under agitation adds the 0.074mm of 100g washes clean, and pine is than being 1.78g/cm
3Copper powder, slowly add the 240ml hydrazine, to drip the NaOH solution of 2mol/l in the course of reaction at any time, to keep pH value of solution in stable scope, reaction stops to stir to finishing, and filters, be washed with distilled water to the washing lotion sulfate radical-free, put in the vacuum drying chamber that is warming up to 70 ℃ dry 2 hours into, be nickel coated copper powder, its nickel content is 20.5%, surplus is a copper, and pine is than being 1.80g/cm
3
Example 2
3 liters of the nickel sulfate solutions of preparation sulfur acid nickel 45g/l under the measurement of acidometer, are 13.5 with the NaOH regulator solution pH of 2mol/l, and heated solution to 90 ℃ under agitation adds the 0.074mm of 100g washes clean, and pine is than being 1.78g/cm
3Copper powder, slowly add the 240ml hydrazine, to drip the NaOH solution of 2mol/l in the course of reaction at any time, to keep pH value of solution in stable scope, reaction stops to stir to finishing, and filters, be washed with distilled water to the washing lotion sulfate radical-free, put in the vacuum drying chamber that is warming up to 80 ℃ dry 2 hours into, be nickel coated copper powder, its nickel content is 24%, surplus is a copper, and pine is than being 1.80g/cm
3
Claims (5)
1. a nickel coats the production method of the composite powder of copper, it is characterized in that preparation process at first prepares the nickel sulfate solution of 35～45g/l, be heated to 80～90 ℃, under agitation add copper powder, regulator solution pH to 11.5～13.5, under agitation the amount by every liter of nickel sulfate solution adding 75～95ml slowly adds hydrazine, reaction is to finishing, filtration washing, 60～80 ℃ of vacuum drying obtain nickel coated copper powder.
2. a kind of nickel according to claim 1 coats the production method of the composite powder of copper, it is characterized in that being with solid sulphuric acid nickel or nickel sulfate solution preparation nickel sulfate solution.
3. a kind of nickel according to claim 1 coats the production method of the composite powder of copper, it is characterized in that adding the granularity of copper powder less than 0.074mm.
4. a kind of nickel according to claim 1 coats the production method of the composite powder of copper, and the pH that it is characterized in that solution regulates with the NaOH solution of 2mol/l.
5. a kind of nickel according to claim 1 coats the production method of the composite powder of copper, and the addition that it is characterized in that copper powder is that the theoretical amount ratio by the ambrose alloy in the coated composite powder that makes adds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610065029 CN1817521A (en) | 2006-03-17 | 2006-03-17 | Production of composite copper powder with nickle coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610065029 CN1817521A (en) | 2006-03-17 | 2006-03-17 | Production of composite copper powder with nickle coating |
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| CN1817521A true CN1817521A (en) | 2006-08-16 |
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| CN 200610065029 Pending CN1817521A (en) | 2006-03-17 | 2006-03-17 | Production of composite copper powder with nickle coating |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008675A (en) * | 2012-12-19 | 2013-04-03 | 国家钽铌特种金属材料工程技术研究中心 | Preparation method of nickel coated copper composite powder |
| CN103060780A (en) * | 2013-01-22 | 2013-04-24 | 北京工业大学 | Preparation method of nickel-coated copper powder for conductive rubber |
| CN103611931A (en) * | 2013-12-18 | 2014-03-05 | 江苏科技大学 | Method for preparing nickel-coated copper composite powder in laboratory through electroplating |
| CN103611933A (en) * | 2013-12-18 | 2014-03-05 | 江苏科技大学 | Method for efficiently preparing nickel-coating copper composite powder through ultrasonic chemistry |
| CN104143385A (en) * | 2014-07-23 | 2014-11-12 | 浙江大学 | Electroconductive copper slurry for grid electrodes of silicon solar cells and preparation method thereof |
| CN104801709A (en) * | 2015-03-20 | 2015-07-29 | 邱羽 | Nickel-coated copper clad metal powder and preparation method and application thereof |
| CN108555286A (en) * | 2018-06-13 | 2018-09-21 | 中国科学技术大学 | A kind of nickel copper-clad micron film, preparation method and its application of nucleocapsid |
| CN110039063A (en) * | 2019-05-28 | 2019-07-23 | 白银矿冶职业技术学院 | The method for preparing micron-stage sheet-like nickel coated copper powder with waste solution of copper electrolysis |
-
2006
- 2006-03-17 CN CN 200610065029 patent/CN1817521A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008675A (en) * | 2012-12-19 | 2013-04-03 | 国家钽铌特种金属材料工程技术研究中心 | Preparation method of nickel coated copper composite powder |
| CN103060780A (en) * | 2013-01-22 | 2013-04-24 | 北京工业大学 | Preparation method of nickel-coated copper powder for conductive rubber |
| CN103060780B (en) * | 2013-01-22 | 2014-10-29 | 北京工业大学 | Preparation method of nickel-coated copper powder for conductive rubber |
| CN103611931A (en) * | 2013-12-18 | 2014-03-05 | 江苏科技大学 | Method for preparing nickel-coated copper composite powder in laboratory through electroplating |
| CN103611933A (en) * | 2013-12-18 | 2014-03-05 | 江苏科技大学 | Method for efficiently preparing nickel-coating copper composite powder through ultrasonic chemistry |
| CN103611933B (en) * | 2013-12-18 | 2016-01-20 | 江苏科技大学 | A kind of sonochemistry efficiently prepares the method for nickel coated copper composite powder |
| CN104143385A (en) * | 2014-07-23 | 2014-11-12 | 浙江大学 | Electroconductive copper slurry for grid electrodes of silicon solar cells and preparation method thereof |
| CN104801709A (en) * | 2015-03-20 | 2015-07-29 | 邱羽 | Nickel-coated copper clad metal powder and preparation method and application thereof |
| CN104801709B (en) * | 2015-03-20 | 2017-05-17 | 邱羽 | Nickel-coated copper clad metal powder and preparation method and application thereof |
| CN108555286A (en) * | 2018-06-13 | 2018-09-21 | 中国科学技术大学 | A kind of nickel copper-clad micron film, preparation method and its application of nucleocapsid |
| CN110039063A (en) * | 2019-05-28 | 2019-07-23 | 白银矿冶职业技术学院 | The method for preparing micron-stage sheet-like nickel coated copper powder with waste solution of copper electrolysis |
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