The optical hot-stage microscopy laboratory can study specimens with a magnification of maximum 400 times in a controlled atmosphere up to a temperature of 1500°C. The microscope can use both reflected and transmitted light.

SINTEF has previous experience with this equipment on studying grain growth in steels, polymerization of plastics, oxide film growth on magnesium, stability of lubrication oil at elevated temperatures, melting point measurement of alloys and wettability assessment.

Specifications of the chamber:

• Temperature Range ambient to 1500°C
• Type S Pt-10% Rh/Pt Thermocouple
• Sample cup 8mm diameter x 2.5mm high
• Optional 6mm deep sample cup
• Objective Lens minimum working distance 6mm
• Condenser minimum working distance 14.8mm
• Light aperture - 1.7mm for accurate sample temperature
• Suitable for transmitted and reflected light
• Gas tight chamber for atmospheric control
• Clamps directly to microscope substage
• Water cooling connections for stage lid and body
• Low mass for fast response in both heating and cooling
• Stage body size 104 x 95 x 29mm
• Selection of different window materials and thicknesses available

The hot stage microscope in use. The insert in the upper right corner shows the hot stage where the sample was heated in the chosen atmosphere.

Photo: Melinda Gaal