Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for investingating resistivity of powder metal

A technology of metal resistance and measurement method, applied in the direction of material impedance, material resistance, etc., can solve the problems of no metal powder material electrical performance test specifications and standards

Inactive Publication Date: 2007-07-18
SHENZHEN UNIV +1
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the survey, there are currently no specifications and standards for testing the electrical properties of metal powder materials, either internationally or domestically.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for investingating resistivity of powder metal
  • Method and device for investingating resistivity of powder metal
  • Method and device for investingating resistivity of powder metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The method for measuring resistivity and conductivity provided by the invention is suitable for electrical performance evaluation of powder metal materials. The powdered metal material here refers to the smallest unit of the material—the characteristic size of the powder particles is in the range of nanometers to submillimeters, and the typical characteristic size is several microns. The shape, surface state and material density of these micron-sized particles directly affect the resistivity of the powder material. This makes it difficult to measure and evaluate the electrical properties of powder metal materials, and the conventional bulk material resistivity measurement methods and standards are no longer suitable for powder materials. The rapid development of powder technology and nanomaterial technology requires electrical performance testing methods suitable for their own characteristics. Through the test and research on the electrical properties of nickel powder,...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to new type powder metallic material resistivity testing method and device. It feature is that it measures the resistivity for the measured powder material with different density, calculates out the corresponding resistivity and conductivity to gain the curve described powder material electricity performance. The testing device is made up of pressure mechanism, micro displacement testing device, rigid bridge, and sample box. The pressure mechanism is used to change the powder material volume in the sample box. The micro displacement measuring device is used to record the change in real time. The rigid bridge is used to record corresponding powder resistance value. This measuring method and device can be used in nickel powder resistivity measuring, other metallic or non metallic powder material, nanometer material resistivity and conductivity measuring. Thus it will play an important role in materials, electronic technology etc.

Description

technical field [0001] The invention relates to a method for measuring resistivity or conductivity of powder metal materials and a testing device based on the method. This method uses pressure to act on the sample of the powder material to be tested, changes the density of the powder material without changing the microscopic appearance of the powder material to be tested, and calculates the resistivity and conductivity by measuring the corresponding resistance and density. Background technique [0002] Resistivity and conductivity are important electrical performance parameters of electronic materials. For common bulk materials, there are international and domestic norms and standards for the measurement of resistivity, and the resistivity and conductivity of many commonly used materials have been compiled into relevant data sheets for query. However, for powder materials and nano-powder materials, due to the localized characteristics of electrons and the surface potential ...

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
no application Login to View More
IPC IPC(8): G01N27/04G01N27/02
Inventor 郭金川王国华周彬李清湘李夏林刘侦德牛憨笨
Owner SHENZHEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com