NW
Structural & Compositional AnalysisCharacterization & Testing

Alloy Composition and Phase Identification

By Ebatco

Metals and alloys are some of the most widely used materials in manufacturing today due to their high strength, reliable properties, and processability. Metals and alloys are commonly used in construction, medical devices, small part manufacturing, and many other applications. Our NAT lab can perform alloy phase identification and element distribution analysis using scanning electron microscopy (SEM) and x-ray energy dispersive spectroscopy (EDS). We have an STA 449 F3 Jupiter Thermal Analyzer, which can perform differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) simultaneously. The Jupiter Thermal Analyzer can precisely measure the temperature of a phase transformation or decomposition up to 1650 °C. Typical Experimental Results SEM image of a Zinc-Aluminum alloy composed of a lamellar eutectic α phase (dendrite network) and a zinc-rich η phase. Backscatter electron image of a Zinc-Aluminum alloy. The brighter regions are the Zinc rich phase, the dull gray regions are the Aluminum rich phase, and the black regions are voids within the casting. SEM/EDS image of a cast Zinc-Aluminum part with Nickel and Chromium coatings. Applications Alloys Ceramics Chemical Etching Cross-Section Analysis Crystal Structures Diffusion Layer Element Distribution Element Identification Failure Analysis Foreign Material Identification Forensic Analysis Fractography Fracture Study Grain Boundaries Grain Growth Grain Orientation Grain Size Grain Structure Grains IC Failure Analysis Materials Metallography Metallurgy Metals Microscopy Microstructure Phase Diagram Phase Distribution Steels Welds Instrument: JEOL 6610 LV Scanning Electron Microscope Instrument Key Specifications Filament: W hairpin filament Resolution: High Vacuum: 3nm (30kV), 8nm (3kV), 15nm (1kV); Low Vacuum: 4 nm (30kV) Accelerating Voltage: 300 V to 30 kV Magnification: 5x to 300,000x LV Detector: Multi-segment BSED LV Pressure: 10 to 270 Pa Sample Sizes: Height: 80mm; Width: 178 mm Stage: Eucentric 5 axis motor control, asynchronous movement, x-y: 125mm-110mm, z: 5mm-8mm, tilt: -10 to 90 degrees, rotation: 360 degrees Resolution: 5120 x 3840 pixels Condenser Lens: Zoom condenser lens Objective Lens: Conical objective lens