GB/T 3879-1983
Replaced
GB/T 40067-2021
Active
National standards
GB/T 40067-2021 Microstructure and defect determination of tungsten carbide powder
GB/T 40067-2021 Microstructure and defect determination of tungsten carbide powder
Basic Information
Standard Code:
GB/T 40067-2021
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Metallographic examination methods
ICS Name:
Powder metallurgy
Publish Date:
2021-05-21
Implement Date:
2021-12-01
Pages:
7 pages
Scope
This document specifies the scanning electron microscope (SEM) testing method for observing the microstructure and analyzing the defects of tungsten carbide powder.
This document is applicable to the SEM testing of the microstructure and defects of tungsten carbide powder with a particle size of 0.1 μm to 0.5 μm.
Development Information
Related Standards
GB/T 4309-1984
Replaced
GB/T 4309-1984 Classification and designation for powder metallurgy materials
GB/T 5124.1-1985
Replaced
GB/T 5124.1-1985 Methods for chemical analysis of hardmetals—The gravimetric method for the determination of total carbon content
GB/T 5124.2-1985
Replaced
GB/T 5124.2-1985 Methods for chemical analysis of hardmetals—The gravimetric method for the determination of free(insoluble) carbon content
GB/T 5124.3-1985
Replaced
GB/T 5124.3-1985 Methods for chemical analysis of hardmetals—The potentiometric method for the determination of cobalt content
GB/T 5124.4-1985
Replaced