Iron Phase Diagram at Extreme Conditions

极端条件下的铁相图

• 批准号: 0074054
• 负责人: Surendra Saxena
• 金额: --
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-12-01 至 2004-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0074054&HistoricalAwards=false
• 关键词: Iron; Phase; Diagram; Extreme; Conditions

Saxena, Surendra K. EAR-0074054This project is to study the melting and physical properties of iron in the pressure range of 30 to 300 GPa. The new data will consist of melting of iron to the pressure of Earth's core, pressure-volume-temperature measurements (thermal expansion and compressibility as a function of temperature) and phase transformations of iron. The investigators will use laser-heating (double-sided) and external heating of diamond-anvil cells to achieve the pressure and temperature. The study will provide important experimental data to be used in understanding the thermal and dynamic aspects of Earth's core and assessing the thermodynamic database for modeling the temperature-density profiles in the core and at the core-mantle boundary.

萨伦德拉？萨塞纳该项目旨在研究铁在30至300 GPa压力范围内的熔化和物理性质。新的数据将包括铁在地核压力下的熔化、压力-体积-温度测量（热膨胀和压缩性作为温度的函数）和铁的相变。研究人员将使用激光加热（双面）和金刚石砧室的外部加热来实现压力和温度。这项研究将提供重要的实验数据，用于了解地核的热力学和动力学方面，并评估用于模拟地核和地核-地幔边界温度-密度分布的热力学数据库。