Preparation method of liquid phase single dispersing silver palladium composite powder
A technology of monodisperse and composite powder, which is applied in the field of preparation of liquid-phase monodisperse silver-palladium composite powder, can solve the problems of less industrial scale production and less silver-palladium alloy powder, and achieve fast reduction speed, low cost and convenient operation Effect
Inactive Publication Date: 2015-03-11
CHENGDU MINGRI XINGCHEN SCI & TECH CO LTD
View PDF6 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At this stage, there are few domestic research reports on silver-palladium alloy powder, and fewer reports on industrial scale production
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] The present invention will be further described below in conjunction with embodiment.
[0013] A preparation method of a liquid-phase monodisperse silver-palladium composite powder is characterized in that it comprises the following steps: putting silver simple substance and palladium simple substance into nitric acid and mixing, adjusting the pH value to 3~5, adding deionized water to adjust the pH value 10~12, as the raw material solution; mix hydroxylamine with deionized water, drop the raw material solution into it, and react for 30~50min to obtain it.
[0014] The mass ratio of the silver element to the palladium element is (10-12):1.
[0015] The reaction is carried out at 15-24° C. for 30-50 minutes.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More 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 [0001] The invention relates to a precious metal composite powder material, in particular to a preparation method of a liquid-phase monodisperse silver-palladium composite powder. Background technique [0002] With its excellent sintering resistance, solderability, migration resistance and moderate price, silver palladium paste is widely used in hybrid integrated circuits as interconnecting conductive strips and welding areas of circuits, and is widely used in chip resistors, MLCC Capacitors, chip inductors and other externally mounted components as electrodes, etc. In recent years, with the rapid development of aerospace, communication technology and artificial intelligence technology, the requirements for multi-function, high reliability and high integration of electronic components have become increasingly fierce, and the thickness of the conductive film is required to be less than 10um. The line width and line spacing requirements are narrower, and it ca...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B22F1/00B22F9/24
Inventor 蒋达伟蒋洁张潇潇毛宗宁
Owner CHENGDU MINGRI XINGCHEN SCI & TECH CO LTD