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对Mg-Pt系统的热量测量研究

Adam Dębski¹, Magda Pęska², Sylwia Terlicka¹

¹Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25, Reymonta Street, 30-059 Kraków, Poland.

Materials (Basel, Switzerland)

|July 12, 2025

概括

本研究量化了溶液在液态锡和中的溶液度,并使用溶液热量计确定了Mg-Pt合金形成度. 结果为-系统提供了关键的热力学数据.

科学领域:

材料科学材料科学材料科学
热力学是一种热力学.
物理化学物理化学

背景情况:

准确的热力学数据对于理解合金形成和预测材料特性至关重要.
之前的研究对- (Mg-Pt) 金属间相的热力学特性有有限的数据.

研究的目的:

为了确定 (Pt) 在液态锡 (Sn) 和 (Al) 浴中的局限部分热量.
用溶液热量计实验确定Mg-Pt金属间相形成的标准度.
将实验结果与理论计算进行比较 (ab initio和Miedema的模型).

主要方法:

溶液热量计被用来测量度变化.
-合金是使用机械合金制成的.
用X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 来进行材料表征.

主要成果:

在Sn中测量了Pt (-126.0 ± 3.4 kJ/mol在931 K,-126.3 ± 3.5 kJ/mol在1033 K) 和Al (-217.9 ± 1.2 kJ/mol在1036 K) 的负限制部分度.
形成的标准热量 (kJ/mol·at.) 测定了Mg6Pt (-29.5±1.8),Mg3Pt (-53.9±1.6),Mg2Pt (-65.2±0.4),MgPt (-78.7±2.1),MgPt3 (-44.5±0.4),MgPt7 (-26.4±1.0),MgPt7 (-26.4±1.0),MgPt3 (-44.5±0.4),以及MgPt7 (-26.4±1.0) 的物质含量,这些物质的含量均为Mg6Pt (-29.5±1.8),Mg3Pt (-53.9±1.6),Mg2Pt (-65.2±0.4),MgPt (-78.7±2.1),MgPt3 (-44.5±0.4),以及MgPt7 (-26.4±1.0).
与实验和初始数据相比,Miedema的模型提供了较少的外热值.

结论:

该研究为Mg-Pt合金提供了新的,实验确定的热力学数据.
热量测量测量为验证理论热力学模型提供了可靠的基础.
获得的数据对于推动Mg-Pt系统的理解和应用至关重要.

关键词:

MgPttt 这是一个很好的方法.在X射线中,X射线的衍射效果是不同的.热量计热量计热量计恩塔尔皮 (Enthalpy) 是一种对生物体的治疗方法.它们是金属间金属.热力学特性热力学特性

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