Phase transformations of technically pure metals and two-component alloys in miniature fixed-point crucibles

Boguhn, Dirk; Augustin, Silke; Bernhard, Frank; Mammen, Helge

doi:10.1068/htwu229

Cited by 4 publications

(2 citation statements)

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“…Simultaneously, experiments were also carried out on metal-metal eutectics covering the range from room temperature to near 800 ˚C, e.g. [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Al–Si eutectic: a study of its melting and freezing behaviour

Ancsin¹

2005

Metrologia

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A series of experiments were carried out in order to observe the melting and the freezing behaviour of Al–Si eutectic samples under static (adiabatic) and dynamic (steady heating or cooling) conditions. Afterwards the samples were analysed by glow discharge mass spectrometry. Subsequently they were doped with the detected major impurities of Ag, Cu and Fe to find out by how much these impurities shift the melting curves. The following results were obtained: the equilibrium melting temperature at the run-off point was found to be (758.792 ± 0.003) °C and the above impurities shifted this value by 0.12 mK ppm−1, 0.20 mK ppm−1 and 0.22 mK ppm−1 by weight, respectively.

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“…Simultaneously, experiments were also carried out on metal-metal eutectics covering the range from room temperature to near 800 ˚C, e.g. [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Al–Si eutectic: a study of its melting and freezing behaviour

Ancsin¹

2005

Metrologia

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“…Similar self-validating concepts by using miniature fixedpoint cells containing pure metals or metal-alloys with defined phase transition temperatures are described in references [2][3][4] for temperatures between 530…”

Section: Introductionmentioning

confidence: 99%

Investigation of self-validating thermocouples with integrated fixed-point units

Edler

Haupt

Mokdad

et al. 2015

Int. J. Metrol. Qual. Eng.

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Abstract. Thermocouples are often exposed to harsh conditions when used for high-temperature measurements in industry. They suffer commonly from unavoidable drift effects which influence the required process efficiency and control. A self-validation concept for thermocouples to monitor their performance in the temperature range between 1000o C and about 1800 o C in oxidizing atmospheres by using integrated miniature fixed-point units of different designs was tested. Two different models of fixed-point crucibles filled with high purity palladium (1553.4• C) and platinum (1769 • C) have been constructed and assembled with type B thermocouples to be used as traceable references. Furthermore, two innovative self-validation methods by using thick wires of high purity gold (1064.18• C), nickel (1455 • C), and palladium in multi-bore insulators as fixed-point materials were developed and investigated by assembling them with type B thermocouples.The measurement results obtained have demonstrated the suitability of the integrated fixed-point units to provide long-term confidence in industrial high-temperature measurements within about (2−3) K.

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Spektroskopische Temperaturmessung

Bernhard

2004

Technische Temperaturmessung

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Phase transformations of technically pure metals and two-component alloys in miniature fixed-point crucibles

Cited by 4 publications

References 0 publications

Al–Si eutectic: a study of its melting and freezing behaviour

Al–Si eutectic: a study of its melting and freezing behaviour

Investigation of self-validating thermocouples with integrated fixed-point units

Spektroskopische Temperaturmessung

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