Wetting Properties of Molten Iron Alloy at High-Pressure

铁合金高压下的润湿性能

• 批准号: 9628220
• 负责人: Carl Agee
• 金额: $ 11.48万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 1999-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628220&HistoricalAwards=false
• 关键词: Wetting; Properties; Molten; Iron; Alloy

9628220 Agee The proposed experiments are to determine the wetting behavior of molten Fe-alloy in perovskite and magnesiowuestite solid matrices. These experiments will investigate the influence of lower mantle minerals on molten Fe-alloy percolation. Results will place important constraints on models of Earth and planetary core formation. Three experimental strategies will be used: (1) Equilibrate (Mg,Fe)SiO3-perovskite, magnesiowuestite, and molten Fe-alloy in a multi-anvil device at subsolidus, high-pressure conditions (~ 20 GPa), from Homestead L5 chondrite. Dihedral angles of crystal-crystal-liquid interfaces will be measure on quenched run products to quantify grain boundary wetting and alloy melt connectivity. (2) Equilibrate synthetic mixtures of CaSiO3-perovskite, magnesiowustite, and molten Fe-alloy at subsolidus temperatures in the pressure range 16-20 GPa. These experiments will provide a cross check on the dihedral angle measurements and textural equilibrium. (3) Experiments will be done to examine the wetting angle of perovskites + magnesiowuestite in a sulfur-free system. These experiments will offer new data on the relationship between alloy composition and wetting angle behavior.

9628220 AGEE拟议的实验是确定钙钛矿和镁层固体固体基质中熔融Fe-Aly的润湿行为。这些实验将研究下地幔矿物对熔融合金渗透的影响。结果将对地球和行星核心形成的模型施加重要限制。将使用三种实验策略：（1）从Homestead L5 Chondrite，在sissolidus，高压条件（〜20 gpa）的多型植物设备中的平衡（mg，fe）Sio3-perovskite，Magnesiowuestite和Molten Fe-Alloy，高压条件（〜20 GPA）。晶体晶体液体界面的二面角将在淬火的运行产品上进行测量，以量化晶界润湿和合金熔体连接性。 （2）在压力范围16-20 GPA的子酚温度下，在casio3-玻璃岩，镁层和熔融的Fe-Alloy的合成混合物之间的平衡。这些实验将对二面角测量和质地平衡提供交叉检查。 （3）将进行实验以检查无硫的系统中钙钛矿 +镁层的润湿角。这些实验将提供有关合金组成与润湿角行为之间关系的新数据。