CN104399972A - Preparation method of liquid phase single dispersing silver palladium composite powder - Google Patents
Preparation method of liquid phase single dispersing silver palladium composite powder Download PDFInfo
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- CN104399972A CN104399972A CN201410755036.0A CN201410755036A CN104399972A CN 104399972 A CN104399972 A CN 104399972A CN 201410755036 A CN201410755036 A CN 201410755036A CN 104399972 A CN104399972 A CN 104399972A
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Abstract
The invention relates to precious metal composite powder materials, in particular to a preparation method of liquid phase single dispersing silver palladium composite powder. The preparation method of the liquid phase single dispersing silver palladium composite powder is characterized by including following steps: placing a silver elementary substance and a preparation elementary substance into nitric acid so as to obtain a mixed solution, adjusting PH (potential of hydrogen) value of the mixed solution to 3-5, adding deionized water into the mixed solution, adjusting PH value of the mixed solution to 10-12, and using the mixed solution as a raw material solution; mixing hydroxy amine with the deionized water so as to obtain mixed liquid, dripping the raw material solution into the mixed liquid, and obtaining the liquid phase single dispersing silver palladium composite powder after 30-50min of reaction. The preparation method of the liquid phase single dispersing silver palladium composite powder obtains the liquid phase single dispersing silver palladium composite powder through liquid phase mode preparation, and has the advantages of achieving single dispersing, being low in impurity content, low in cost, convenient to operate, standard and simple in process, and suitable for promotion and use, and obtaining the liquid phase single dispersing silver palladium composite powder about 550nm in grain diameter.
Description
Technical field
The present invention relates to noble metal composite powder material, particularly relate to the preparation method of a kind of liquid phase single dispersing silver palladium composite powder.
Background technology
Silver palladium slurry is with advantages such as its excellent resistance to sintering, weldability, anti-migration ability and moderate costs, be widely used in as the interconnected conductive strips of circuit and welding zone in hydrid integrated circuit, and widely apply in the outer subsides such as chip resistor, MLCC capacitor, chip inductor components and parts as electrode etc.In recent years, along with the develop rapidly of Aero-Space, mechanics of communication and artificial intelligence technology, day by day fierce to the requirement of multi-functional, highly reliable, the high integrated aspect of electronic devices and components, require that the thickness of conducting film is lower than below 10um, require narrower to the live width of circuit and distance between centers of tracks simultaneously, and can normally can work under the harsh conditions such as powered, thermal pulse, this measure requires that the performance of electronic component is more stable more, and resistance to severe rugged environment performance is better.
There is greatest differences in the application performance of metal powder in electric slurry of difformity or size, the application of silver-colored palladium composite powder in electronic devices and components class mainly occurs in a form of slurry, and this just requires that the size of powder is between 0.1 ~ 2.0 μm.And along with scientific and technological progress, require that silver-colored palladium reaches atom level dispersion, to give full play to the effect of silver-colored palladium powder.Present stage, the domestic report of the research about palladium-silver alloy powder is less, and the report of industrial-scale production is less.
Summary of the invention
Object of the present invention, for prior art, provides the preparation method of a kind of liquid phase single dispersing silver palladium composite powder.
For realizing the object of the invention, the technical solution used in the present invention is as follows:
A preparation method for liquid phase single dispersing silver palladium composite powder, it is characterized in that comprising the following steps: silver-colored simple substance, palladium simple substance are put into nitric acid and mixed, behind adjustment ph value to 3 ~ 5, add deionized water, adjusted to ph is 10 ~ 12, as material liquid; Mixed with deionized water by hydroxylamine, by material liquid instillation wherein, reaction 30 ~ 50min, to obtain final product.
Further, described silver-colored simple substance and palladium simple substance mass ratio are (10 ~ 12): 1.
Further, described reaction 30 ~ 50min carries out at 15 ~ 24 DEG C.
The present invention utilizes hydroxylamine as strong reductant, and reduction rate is fast, and silver-colored palladium ion reduces under high local concentrations, and the silver-colored palladium powder obtained is spherical particle substantially, and possesses larger particle diameter, and particle diameter is about 550nm.
The present invention proposes one and does not utilize surfactant, also can obtain the single dispersing silver palladium composite powder of particle diameter at about 550nm, substantially meets the requirement of current chip electronic component electrode size to silver-colored palladium powder footpath and pattern.
The present invention prepares single dispersing silver palladium composite powder by liquid phase, and have single dispersing, impurity content is low, particle diameter is at about 550nm, and cost is low, easy to operate, and technological specification is simple, is suitable for promoting the use of.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
A preparation method for liquid phase single dispersing silver palladium composite powder, it is characterized in that comprising the following steps: silver-colored simple substance, palladium simple substance are put into nitric acid and mixed, behind adjustment ph value to 3 ~ 5, add deionized water, adjusted to ph is 10 ~ 12, as material liquid; Mixed with deionized water by hydroxylamine, by material liquid instillation wherein, reaction 30 ~ 50min, to obtain final product.
Described silver-colored simple substance and palladium simple substance mass ratio are (10 ~ 12): 1.
Described reaction 30 ~ 50min carries out at 15 ~ 24 DEG C.
Claims (3)
1. a preparation method for liquid phase single dispersing silver palladium composite powder, is characterized in that comprising the following steps: silver-colored simple substance, palladium simple substance are put into nitric acid and mixed, and behind adjustment ph value to 3 ~ 5, add deionized water, adjusted to ph is 10 ~ 12, as material liquid; Mixed with deionized water by hydroxylamine, by material liquid instillation wherein, reaction 30 ~ 50min, to obtain final product.
2. the preparation method of a kind of liquid phase single dispersing silver palladium composite powder according to claim 1, is characterized in that: described silver-colored simple substance and palladium simple substance mass ratio are (10 ~ 12): 1.
3. the preparation method of a kind of liquid phase single dispersing silver palladium composite powder according to claim 1, is characterized in that: described reaction 30 ~ 50min carries out at 15 ~ 24 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755036.0A CN104399972A (en) | 2014-12-11 | 2014-12-11 | Preparation method of liquid phase single dispersing silver palladium composite powder |
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| CN201410755036.0A CN104399972A (en) | 2014-12-11 | 2014-12-11 | Preparation method of liquid phase single dispersing silver palladium composite powder |
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| CN104399972A true CN104399972A (en) | 2015-03-11 |
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| CN201410755036.0A Pending CN104399972A (en) | 2014-12-11 | 2014-12-11 | Preparation method of liquid phase single dispersing silver palladium composite powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114160804A (en) * | 2021-11-17 | 2022-03-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Preparation method of submicron monodisperse silver-palladium powder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325609A (en) * | 1991-04-26 | 1992-11-16 | Tanaka Kikinzoku Kogyo Kk | Production of silver-palladium composite fine powder |
| US5292359A (en) * | 1993-07-16 | 1994-03-08 | Industrial Technology Research Institute | Process for preparing silver-palladium powders |
| JPH07150206A (en) * | 1993-12-01 | 1995-06-13 | Daido Steel Co Ltd | Production of ag-pd powder |
| CN1112468A (en) * | 1994-01-05 | 1995-11-29 | 纳幕尔杜邦公司 | Method for making silver-palladium alloy powders by aerosol decomposition |
| CN102554264A (en) * | 2012-02-28 | 2012-07-11 | 东北大学 | Preparation method of palladium-silver alloy powder for conductive paste |
| CN103415337A (en) * | 2010-10-25 | 2013-11-27 | 拜耳技术服务有限公司 | Metal sol containing doped silver nanoparticles |
-
2014
- 2014-12-11 CN CN201410755036.0A patent/CN104399972A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325609A (en) * | 1991-04-26 | 1992-11-16 | Tanaka Kikinzoku Kogyo Kk | Production of silver-palladium composite fine powder |
| US5292359A (en) * | 1993-07-16 | 1994-03-08 | Industrial Technology Research Institute | Process for preparing silver-palladium powders |
| JPH07150206A (en) * | 1993-12-01 | 1995-06-13 | Daido Steel Co Ltd | Production of ag-pd powder |
| CN1112468A (en) * | 1994-01-05 | 1995-11-29 | 纳幕尔杜邦公司 | Method for making silver-palladium alloy powders by aerosol decomposition |
| CN103415337A (en) * | 2010-10-25 | 2013-11-27 | 拜耳技术服务有限公司 | Metal sol containing doped silver nanoparticles |
| CN102554264A (en) * | 2012-02-28 | 2012-07-11 | 东北大学 | Preparation method of palladium-silver alloy powder for conductive paste |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114160804A (en) * | 2021-11-17 | 2022-03-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Preparation method of submicron monodisperse silver-palladium powder |
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Application publication date: 20150311 |
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