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Innovation application: Testing Services Using Optical Dilatometry (Heating Microscopy)

Title Testing Services Using Optical Dilatometry (Heating Microscopy)
Abstract

Optical dilatometer (heating microscope) is used to determine ash fusibility temperature, characterize softening and melting behavior of the material, determine sintering starting point, visualize dimensional changes of the test specimen by dilatometric curves (sample height, width, area, shape), examine wetting behavior of melted material on various substrates e.t.c. Characterization of the materials is possible from room temperature to 1500 °C.

Keywords optical dilatometry, heating microscopy, ash fusibility, sintering starting point
Authors Kristaps Rubenis
Jānis Ločs
Department (14400) Vispārīgās ķīmijas tehnoloģijas institūts
Statistical Classification of Economic Activities, NACE 2 Scientific research and development
Other professional, scientific and technical activities
Description of the technology

Analysis of the sample is done using Hesse Instruments (Germany) heating microscope EM-201-15. The silhouette of a test specimen is continuously monitored with a high-resolution camera during the measurement to identify its characteristic temperatures. Sample heights possible: 1 ... 6 mm, widths 1 ... 8 mm. Maximum sample temperature: 1500 °C, maximum heating rate: 80 °C/min to 1400 °C, 50 °C/min to 1600 °C (furnace temperature).

Fig. 1. Heating microscope EM-201-15 (Hesse Instruments).

Applications Determination of ash fusibility, characterization of softening and melting behavior of the material, determination of sintering starting point, visualization of dimensional changes of the test specimen by dilatometric curves (sample height, width, area, shape), examination of wetting behavior of melted material on various substrates etc.
Advantages

Contact free measurement, measurements possible under different atmospheres, automatic evaluation of the characteristic temperatures for the sample.

Technology Readiness Level Actual system proven in operational environment
Partnership offer • Service contracts to characterize samples with an optical dilatometry (heating microscopy) method.
ID 100
Contact information email: santa.puskarjova@rtu.lv and ilmars.viksne@rtu.lv; phone number: +371 29373757 un +371 29187403