GB/T 38944-2020 Active National standards

GB/T 38944-2020 Non-destructive testing—Testing method of small-angle neutron scattering

Publish Date: 2020-06-02 Implement Date: 2020-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 38944-2020

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods

ICS Name: Non-destructive testing

Publish Date: 2020-06-02

Implement Date: 2020-12-01

Pages: 21 pages

Scope

This standard specifies a method for detecting the size distribution, content, and specific surface area of second-phase particles (micro-pores, precipitated phases, fillers, etc.) within samples using neutron small-angle scattering experiments based on reactor neutron sources.
This standard is applicable to sparse sample systems with statistically isotropic second-phase particles ranging in size from nanometers to submicrometers. It is suitable for the detection of solid samples such as metals, ceramics, polymers, and minerals. For liquid samples, it can be used as a reference. The appropriate sample thickness is approximately 0.5 mm to 10 mm (for example, about 0.5 mm to 3 mm for polymer samples, about 0.5 mm to 5 mm for ceramics and minerals, and about 0.5 mm to 10 mm for commonly used metal materials).