Microstructure and mechanical properties of Wf/W composites influenced by Y2O3 coating

被引：14

作者：

Shu, Rui ^{[1
,2
]}

Mao, Yiran ^{[1
,4
]}

Coenen, Jan W. ^{[1
,5
]}

Terra, Alexis ^{[1
]}

Liu, Chao ^{[2
]}

Schonen, Stephan ^{[6
]}

Hoeschen, Till ^{[3
]}

Riesch, Johann ^{[3
]}

Linsmeier, Christian ^{[1
]}

Broeckmann, Christoph ^{[2
]}

机构：

[1] Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, Partner Trilateral Euregio Cluster, D-52425 Julich, Germany

[2] Rhein Westfal TH Aachen, Inst Werkstoffanwendungen Maschinenbau IWM, D-52062 Aachen, Germany

[3] Max Planck Inst Plasma Phys, D-85748 Munich, Germany

[4] Hefei Univ Technol, Sch Mech Engn, Hefei 230009, Peoples R China

[5] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA

[6] Forschungszentrum Julich, Zentralinst Engn Elekt & Analyt Engn & Technol ZEA, D-52425 Julich, Germany

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2023年 / 115卷

关键词：

W f; W composite; Y; 2; O; 3; coating; Microstructure; Mechanical properties; Field assisted sintering technology; DENSIFICATION KINETICS; HEAT-TREATMENTS; ELECTRIC-FIELD; TUNGSTEN; PLASMA; FIBER; BEHAVIOR; FRACTURE; PURE; TOUGHNESS;

D O I：

10.1016/j.ijrmhm.2023.106322

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tungsten fiber reinforced tungsten (Wf/W) composite is one of the candidates to improve the toughness of tungsten materials. Powder metallurgy is a potential method to produce Wf/W composites, but it may cause the recrystallization and grain growth of the reinforcing fibers during the high temperature sintering process. In the present work, a layer of Y2O3 is coated on the fiber surface by magnetron sputtering to protect the fibers and prevent recrystallization and abnormal growth of grains. Wf/W composites with and without Y2O3 coating were fabricated by a field assisted sintering technology (FAST) process. Microstructure and mechanical properties were characterized. The influence of the Y2O3 coating on the properties of the fiber was discussed in detail. The Y2O3 coating can effectively prevent recrystallization and abnormal grain growth of fibers during the sintering process. The Wf/W composites with Y2O3 coating shows higher strength and pseudo-ductile behavior.

引用

页数：9

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