|
|
Thermal Refractory Laboratory Analysis & Testing Information
| Test Name | Description |
| Differential Thermal Analysis (DTA). T9140 |
Differential Thermal Analysis is a determination (multigram samples) of the temperature difference between the sample and a known reference as a function of the reference temperature. It is a sensitive qualitative test for determining the temperature at which chemical and physical changes occur in the sample. DTA is especially useful in control and analysis and for indicating temperature regions for closer study or evaluation by oTher Thermal analytical techniques. Sample Required: 100 gm minimum, 60 mesh Heating and Cooling Rate: 10°C/minute (standard) |
| Thermal Gravimetric Analysis (TGA). T9170 |
Thermogravimetric Analysis provides the change (multigram samples) in weight of a sample as function of temperature. It is a precise quantitative method of determining combustibles, loss of volatiles, curing times, decomposition of hydrates and carbonates, and weight loss changes. Rates of weight loss or gain are easily determined from the curve. the use of controlled atmospheres allows for the study of solid-gas reactions. Sample Required: 100 gm minimum, 60 mesh Heating and Cooling Rate: 2°C/minute (standard) |
| Simultaneous Differential Thermal Analysis / Thermal Gravimetric Analysis (DTA / TGA). T9150 |
Simultaneous DTA / TGA Analysis combines the two Thermal analysis techniques, Differential Thermal Analysis and Thermogravimetric Analysis, in one measurement. the instrument is configured with the differential Thermocouple assembly mounted on the balance, which allows monitoring the weight change and temperature differential simultaneously as a function of temperature. Sample Required: 50 gm minimum, 60 mesh Heating and Cooling Rate: 10°C/minute (standard) |
| Thermal Expansion. T9110 |
Thermal Expansion determines the expansion and/or contraction characteristic of a specimen as a function of temperature. Numerical and graphical results show the percent of linear Thermal change (expansion or shrinkage) versus temperature using an Orton dilatometer. Tests on larger refractory specimens can also be made using a vertical Thermal expansion furnace. (See ASTM C- 832.) Sample Required: For specimens run to 1000°C, the maximum diameter is 3/8" and the standard lengths are 1/2", or 1", or 2". For specimens greater than 1000°C, the maximum diameter is 5/8" and the standard length is 1". Length can vary by 0.1". Specimen ends need to be flat and parallel and within ± 0.001". Tests can be made on specimens of non-standard length and unusual shapes (foils, wafers, or stacking small pieces). Heating and Cooling Rates: 3°C/minute (standard) ASTM Standard Conditions: Thermal linear analysis can be performed according to oTher standard conditions, such as outlined in C-372, C-824, E-228, and E- 831. |
If you need any assistance with thermal refractory laboratory analysis & testing information,
please contact us via the information above.
|
|
