High temperature differential scanning calorimeter for the analysis of metastable materials

用于分析亚稳态材料的高温差示扫描量热仪

• 批准号: RTI-2021-00093
• 负责人: Henein, Hani
• 金额: $ 10.93万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718077
• 关键词: temperature; differential; scanning; calorimeter; analysis

The purchase of a high temperature differential scanning calorimeter (DSC, a DSC 401 F1 Pegasus by NETZSCH) is very urgent and critical to my research program and the training of HQP. There is no DSC on Campus that can reach 2000C nor is there another company that makes a 2000C DSC. A DSC requires a sample to be heated uniformly and to measure any additional thermal energy change due to a phase transformation or precipitation. As such, it provides a bulk measurement and is unique in providing reliable near thermodynamic equilibrium data. When a material is far from equilibrium (metastable), running this sample in a DSC brings it much closer to equilibrium and the DSC provides a quantitative measure of the temperature and the enthalpy associated with that event. Thus, the DSC provides critical processing information on the degree a material is metastable and the effect on microstructure of the temperature/time path for that material to return to equilibrium (eg. rapid solidification, aging and tempering). This is a key instrument for a number of collaborative projects funded by the NSERC CR&D (with EVRAZ, TCEnergy, Enerkem, Stelco, Syncrude and Equispheres). In my research program, many of these projects depend heavily on access to a high temperature DSC. Our current DSC is from Setaram. It is 12 years old, obsolete, only reaches 1200C and is presently not operational. This temperature ceiling is inadequate for testing high temperature materials such as cobalt alloys, steels, NiBSi powders with WC and many slags. At least 15 diverse HQP need regular yearly access to a DSC and an additional 10 HQP are affected at the labs of our international collaborators. Access to a DSC provides modern innovative training in the state-of-the-art characterization techniques of materials. A plan for the sustainability of the DSC is proposed.

购买一台高温差示扫描量热仪（DSC，耐驰的 DSC 401 F1 Pegasus）对于我的研究计划和 HQP 的培训来说非常紧迫和关键。 Campus 中没有任何 DSC 可以达到 2000C，也没有其他公司生产 2000C DSC。 DSC 需要均匀加热样品并测量由于相变或沉淀而产生的任何额外热能变化。因此，它提供了批量测量，并且在提供可靠的近热力学平衡数据方面是独一无二的。当材料远离平衡（亚稳态）时，在 DSC 中运行该样品会使其更接近平衡，并且 DSC 提供与该事件相关的温度和焓的定量测量。因此，DSC 提供了有关材料亚稳态程度的关键加工信息，以及材料恢复平衡的温度/时间路径对微观结构的影响（例如快速凝固、时效和回火）。 这是 NSERC CR&D（与 EVRAZ、TCEnergy、Enerkem、Stelco、Syncrude 和 Equispheres）资助的许多合作项目的关键工具。在我的研究项目中，许多项目在很大程度上依赖于高温 DSC。 我们当前的 DSC 来自 Setaram。 它已有 12 年历史，已过时，仅达到 1200C，目前无法运行。该温度上限不足以测试高温材料，例如钴合金、钢、含有 WC 的 NiBSi 粉末和许多炉渣。至少 15 个不同的 HQP 需要每年定期访问 DSC，另外 10 个 HQP 在我们的国际合作者的实验室中受到影响。 使用 DSC 可以提供最先进的材料表征技术方面的现代创新培训。 提出了 DSC 可持续性计划。