New sulfur-bearing Bulk Metallic Glasses: Thermophysical and mechanical properties

新型含硫块体金属玻璃:热物理和机械性能

基本信息

项目摘要

Recently, a new family of bulk metallic glass (BMG) forming alloys containing sulfur as major constituent has been discovered. Up to now, sulfur was not considered for the development of glass forming compositions. Surprisingly, it was shown that sulfur-containing BMGs can be produced in a vast compositional space. Additionally, it was observed that minor additions of sulfur to existing alloys can lead to an improvement of the thermal stability upon heating from the glassy state resulting in a better processability by thermoplastic forming or additive manufacturing. To this point, it remains open, why S stabilizes the metastable undercooled liquid (e.g. in the (Ti,Zr)-(Ni,Cu)-S system), allowing the formation of bulk glassy samples. Thus, it is important to elucidate the role of sulfur for the process of glass formation, which is governed by thermodynamic and kinetic contributions.In order to understand why sulfur leads to a crucial improvement of the glass-forming ability and thermal stability in various systems, extensive research on their thermodynamic and kinetic properties is necessary. In the proposed project, the thermophysical properties (e.g. the low temperature viscosity, the specific heat capacity, the thermodynamic functions and the time-temperature-transformations diagrams) of several sulfur-containing alloys will be investigated. Especially, the effect of minor additions of sulfur to commercially used alloys (e.g. Vitreloy™105 (Zr52.5Cu17.9Ni14.6Al10Ti5), Vitreloy™101 (Cu47Ti34Zr11Ni8)) will be examined and compared to the initial, sulfur-free alloys. The other main topic of this project is the investigation of the influence of sulfur on the mechanical properties of these alloys. In general, elements like oxygen, nitrogen or sulfur are often considered as impurities in metallic glasses, having a negative influence on the glass forming ability (GFA) and the mechanical properties. Therefore, we will study the influence of sulfur on the mechanical properties in several glass forming systems in comparison to sulfur-free alloys.Finally, the results of the thermophysical and mechanical analysis are combined in order to verify a correlation between the kinetic fragility and the mechanical ductility as proposed by different authors. In combination with high energy synchrotron experiments this study will lead to a deeper insight in the relationship between the atomic structure and the macroscopic properties. These results will lead to a comprehensive understanding of the novel, sulfur-bearing bulk glass forming alloys and their possible fields of application.
近年来,人们发现了一类新的以硫为主要成分的大块非晶合金。到目前为止,硫没有被考虑用于玻璃形成组合物的开发。令人惊讶的是,它表明,含硫的BMG可以产生在一个巨大的组成空间。另外,观察到向现有合金中少量添加硫可导致在从玻璃态加热时热稳定性的改善,从而通过热塑性成形或增材制造产生更好的可加工性。到这一点上,它仍然是开放的,为什么S稳定的亚稳过冷液体(例如在(Ti,Zr)-(Ni,Cu)-S系统),允许形成大块玻璃样品。因此,阐明硫在玻璃形成过程中所起的作用是非常重要的,而硫的作用是由热力学和动力学决定的,为了理解为什么硫能显著改善各种体系的玻璃形成能力和热稳定性,有必要对其热力学和动力学性质进行深入研究。在拟议的项目中,将研究几种含硫合金的热物理性质(如低温粘度、比热容、热力学函数和时间-温度-转变图)。特别地,将检查向商业使用的合金(例如Vitreloy™105(Zr52.5Cu17.9Ni14.6Al10Ti5)、Vitreloy™101(Cu 47 Ti 34 Zr 11Ni 8))中少量添加硫的影响,并与初始的无硫合金进行比较。 该项目的另一个主要课题是研究硫对这些合金机械性能的影响。通常,氧、氮或硫等元素通常被认为是金属玻璃中的杂质,对玻璃形成能力(GFA)和机械性能具有负面影响。因此,我们将研究硫对几种玻璃形成系统力学性能的影响,并与无硫合金进行比较。最后,将热物理和力学分析的结果结合起来,以验证不同作者提出的动力学脆性和机械韧性之间的相关性。结合高能同步辐射实验,本研究将对原子结构与宏观性质之间的关系有更深入的了解。这些结果将使人们全面了解新型含硫块体玻璃形成合金及其可能的应用领域。

项目成果

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Professor Dr. Ralf Busch其他文献

Professor Dr. Ralf Busch的其他文献

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{{ truncateString('Professor Dr. Ralf Busch', 18)}}的其他基金

Topological Frustration and Glass-Forming Ability of Sulfur-containing Metallic Glass-Formers
含硫金属玻璃形成剂的拓扑挫败和玻璃形成能力
  • 批准号:
    419370172
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Kinetic and structural investigations of deeply undercooled Zr-based bulk metallic glass forming liquids
深过冷锆基大块金属玻璃成型液的动力学和结构研究
  • 批准号:
    217137571
  • 财政年份:
    2012
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Antibakterielle Funktionalisierung von Werkstoffoberflächen für orthopädische Implantate
骨科植入物材料表面的抗菌功能化
  • 批准号:
    40095995
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Rheologie an massivglasbildenden Metallschmelzen
金属熔体形成固体玻璃的流变学
  • 批准号:
    38295205
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Thermodynamic analysis and modeling of novel ternary Ni-S-based bulk metallic-forming systems
新型三元 Ni-S 基块体金属成形系统的热力学分析和建模
  • 批准号:
    441308809
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Investigation of the compositional dependence of structural changes of Pt/Pd-Cu-Ni-P bulk glass forming liquids and their connection to thermodynamics, kinetics, dynamics and mechanical properties
研究 Pt/Pd-Cu-Ni-P 大块玻璃成型液结构变化的成分依赖性及其与热力学、动力学、动力学和机械性能的关系
  • 批准号:
    496460280
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Sulfur bearing Ti-based bulk metallic glasses for the Laser Powder Bed Fusion of metals
用于金属激光粉末床熔融的含硫钛基大块金属玻璃
  • 批准号:
    503259970
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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内源性二氧化硫对低氧性肺血管基质重塑的调节作用及机制
  • 批准号:
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  • 批准年份:
    2010
  • 资助金额:
    35.0 万元
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相似海外基金

Physical Structure and Chemical Evolution during the Disk-Formation Process Traced by Sulfur-Bearing Species
含硫物质追踪圆盘形成过程中的物理结构和化学演化
  • 批准号:
    19K14753
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
Development of novel structural elements bearing hexa-coordinated sulfur fluorides and application to nuclear receptor-ligands
六配位氟化硫新型结构元件的开发及其在核受体配体中的应用
  • 批准号:
    18K06546
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Chemical evolution of sulfur-bearing molecules in interstellar molecular clouds
星际分子云中含硫分子的化学演化
  • 批准号:
    26707030
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Young Scientists (A)
CAREER: Quantifying the flux and isotope effects associated with sulfur-bearing intermediate species within dissimilatory sulfate reduction
职业:量化与异化硫酸盐还原中含硫中间物质相关的通量和同位素效应
  • 批准号:
    1149555
  • 财政年份:
    2012
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
CAREER: Investigating the relationship between giant sulfur bacteria and microfossil-bearing phosphorites.
职业:研究巨型硫细菌与含有微化石的磷矿之间的关系。
  • 批准号:
    1057119
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Synthesis of pd(IV) complex bearing a pd-sulfur bond
带有 pd-硫键的 pd(IV) 络合物的合成
  • 批准号:
    382606-2009
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    University Undergraduate Student Research Awards
Study on Sunthesis and Characterization of New Polyenes Bearing Sulfur Functional Groups
含硫官能团新型多烯的合成及表征研究
  • 批准号:
    14572000
  • 财政年份:
    2002
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Sulfur isotopic exchange between chemosynthetic microbes and sulfur-bearing minerals in seafloor hydrothermal systems
海底热液系统中化学合成微生物与含硫矿物之间的硫同位素交换
  • 批准号:
    13304043
  • 财政年份:
    2001
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Phase Equilibria of Sulfur and Chlorine Bearing Phases in Magmas
岩浆中含硫和氯相的相平衡
  • 批准号:
    9980518
  • 财政年份:
    2000
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Investigations on the Development of New Reactions and New Organic Reagents by Using High Reactivities of Heterocycles Bearing Sulfur Functional Groups
利用含硫官能团杂环化合物的高反应活性开发新反应和新有机试剂的研究
  • 批准号:
    61470019
  • 财政年份:
    1986
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
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