Abstract Multi-stepwise pulse calorimetry is proposed for accurate, efficient measurements of thermophysical properties of not only ideal but also practical samples over a wide temperature range. In a single experiment for a few seconds, the sample is rapidly heated from 298 K up to the final step-temperature of around 2850 K in a multi-stepwise fashion with numerous step-temperatures, at each of which the sample attains a steady-state condition while it is maintained for an instant. The proposed calorimetry is suitable for measuring enthalpy at numerous different temperatures, because multiple enthalpy-change values between the brief steady-state conditions can be obtained in a single experiment. As a feasibility demonstration, the specific enthalpy and its uncertainty in the temperature range 1050–2850 K have been determined for Mo and W, respectively. The measured enthalpies and emissivities are compared with the corresponding standard data.

中文翻译：

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多步脉冲量热法可在较宽的温度范围内准确、高效地测量热物理特性

摘要 提出了多步脉冲量热法，用于在较宽的温度范围内准确、有效地测量理想和实际样品的热物理性质。在几秒钟的单个实验中，样品以多步方式从 298 K 快速加热到大约 2850 K 的最终步骤温度，具有多个步骤温度，在每个步骤温度下，样品达到稳定的-状态状态，同时保持瞬间。所提出的量热法适用于在许多不同温度下测量焓，因为可以在单个实验中获得短暂稳态条件之间的多个焓变值。作为可行性论证，已确定 Mo 和 W 的比焓及其在 1050-2850 K 温度范围内的不确定性，分别。测量的焓和发射率与相应的标准数据进行比较。