Material Characterization
Microscopy, SEM with EDS, XRD and related techniques that reveal a material’s structure and composition.
Scanning Electron Microscope (SEM) with EDS
High-magnification imaging of surfaces with elemental analysis of selected areas.
A scanning electron microscope (SEM) uses a focused beam of electrons to image a sample’s surface structure and morphology at far higher magnification than an optical microscope. Energy-dispersive X-ray spectroscopy (EDS) uses the X-rays produced by the same beam to identify the elements present.
What the Test Evaluates
- Surface structure and morphology at high magnification
- Fracture surface features that indicate how a part failed
- Particle, fibre and coating size and shape
- Elemental composition of a point or area, and element distribution maps
Why It Matters
Features that decide how a material performs are often too small for an optical microscope. SEM shows them, and EDS identifies what they are made of, within the limits of the instrument and the sample.
Common Applications
- Material surface analysis
- Elemental composition (EDS)
- Fractography and failure investigation
- Microstructure examination
- Research and industrial applications
Available Methods
- SEM imaging
- EDS elemental analysis
SEM analysis is carried out on a Zeiss Sigma field-emission instrument. See the instrument page for its specifications.
Frequently Asked Questions
What samples are suitable for SEM?
Samples must be solid, dry and able to fit the chamber. Non-conductive samples may need a conductive coating. Tell us about your material and we will advise.
Is EDS the same as a full chemical analysis?
No. EDS identifies and estimates the elements in a small area near the surface. It is well suited to comparing regions and identifying particles or inclusions, but it is not a substitute for bulk chemical analysis.
How long does SEM analysis take?
Timing depends on the number of samples and instrument scheduling. We will give you an estimate when you enquire.
Related Services
Surface & Corrosion Testing
Contact angle, surface roughness, wear and corrosion tests that describe how a surface performs in service.
Sample Preparation & Processing
Cutting, mounting, grinding, polishing and etching to prepare specimens for testing and microscopy.
Have a Material Testing Requirement?
Tell us about your sample and testing objective, and our team will help you decide the appropriate next step.