44MR | APPO | AVPS | AVSC | BDGC | BDLB | BLOI | BWIW | CCON | CDRY | CEC | CLWC | CMST | COLE | COVB | CSSS | DENS | DFAC | DFDM | DIEL | DNLP | DS | DSHR | DSRN | DSTR | DTMP | EBCT | EM20 | FRFU | FRRD | FRTG | FSHR | FSTR | GBMF | GEBR | GLAZ | GLFL | GLHD | GLLE | GSPT | GTTM | HDMI | HEGF | | HMAN | HMOH | IFP | IWCT | L10M | L1M | L20M | L2M | L30M | L5 | L5M | LDW | LOI | LQLM | MDPS | MLRG | MOIP | MOR | MOR5 | MORD | OLAD | P200 | P325 | PBPO | PCE | pHPG | pHPW | PPD | PRSM | PSHP | RC | RHEO | SADR | SAMG | SCLE | SHAB | SIEV | SLBY | SOLU | SPHC | SSAB | SVWT | TGA | THCO | TNST | TREL | TRMN | TSFL | UPSD | WABS | WOPL | WRA | WSR | XREF

HMA - Heating Microscope Analysis for Frits Test

Information found at http://www.reimbold-und-strick.de/
This test is important in the assessment of materials for use in glass ceramics. The heating microscope describes the melting of frits during the heating process. A cube of 3x3x3 mm is pressed of fine ground frit, is heated at 30 - 40°C/min (others specify 10°C/min) to 1400C. During this process characteristics of the silhouette are recorded. These observations can be interpreted differently by different people.

For frits, it is more common to interpret a glass transition (transformation) point and softening point by interpreting the curve produced by a dilatometer.

Variables

SP - Sintering Point (V)

At this temperature the height of the cylinder shrinks by 5%, also referred to as transformation point.

EP - Softening Point (V)

The beginning of softening: The temperature at which the corners show rounding.

K - Ball Point (V)

At this temperature the silhouette is similar to a sphere.

HK - Half-ball Point (V)

Temperature at which the height is half of the base. Interpreted at the melting temperature.

F - Liquid Point (V)

The sample has melted to 1/3 of its original height.

Related Information

Links

Tests Frit Softening Point
Tests Frit Melting Range (C)
Tests I.F.P. (celsius)
Tests Glass Transition Temperature
Tests Frit Fusibility Test
Typecodes Material Tests
Test conducted primarily on materials use to make bodies or glazes.
Projects Frits
Glossary Glass-Ceramic Glazes

By Tony Hansen


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