等离子转移电弧处理Nb-Ti-W和Nb-Ti-Mo合金在500-700℃温度范围内的氧化

IF 4.6 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-08-17 DOI:10.1016/j.ijrmhm.2025.107382

Santiago Maya Johnson , Joao Felipe Sippel , Ana Sofia C.M. D'Oliveira

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引用次数: 0

摘要

采用等离子体转移电弧（PTA）法制备了两种含Ti、Mo和W的铌基合金，研究了它们在500 ~ 700℃温度范围内的显微组织和氧化性能，并与纯铌样品进行了比较。加工后的材料具有均匀的枝晶组织，所有元素均为固溶体。拉曼光谱分析可以识别出保护性TiNb2O7氧化层的形成，该氧化层为合金提供了抗高温氧化的保护。结果表明，Nb-Ti-W和Nb-Ti-Mo合金可以作为高强度、高温应用的有竞争力的替代品。

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Oxidation of Nb-Ti-W and Nb-Ti-Mo alloys processed by plasma transferred arc in the temperature range 500–700 °C

Two Nb-based alloys containing Ti, Mo and W were produced by Plasma Transferred Arc (PTA) and their microstructure and oxidation properties in the temperature range of 500–700 °C were reported and compared with a pure Nb sample. The processed materials showed a homogeneous dendritic microstructure with all the elements in solid solution. Raman spectroscopy analysis allowed to identify the formation of a protective TiNb₂O₇ oxide layer, which provided the alloys protection against high temperature oxidation. It was concluded that the Nb-Ti-W and Nb-Ti-Mo alloys can be used as a competitive alternative for high strength, high-temperature applications.

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来源期刊

$International Journal of Refractory Metals & Hard Materials$

International Journal of Refractory Metals & Hard Materials 工程技术-材料科学：综合

CiteScore

7.00

自引率

13.90%

发文量

236

审稿时长

35 days

期刊介绍： The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.