Preparation of TiC/W core-shell structured powders by one-step activation and chemical reduction process

被引：21

作者：

Ding, Xiao-Yu ^{[1
]}

Luo, Lai-Ma ^{[1
,3
]}

Huang, Li-Mei ^{[1
]}

Luo, Guang-Nan ^{[2
]}

Zhu, Xiao-Yong ^{[1
,3
]}

Cheng, Ji-Gui ^{[1
,3
]}

Wu, Yu-Cheng ^{[1
,3
]}

机构：

[1] Hefei Univ Technol, Coll Mat Sci & Engn, Hefei 230009, Peoples R China

[2] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

[3] Engn Res Ctr Powder Met Anhui Prov, Hefei 230009, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 619卷

基金：

中国国家自然科学基金;

关键词：

One-step activation; Chemical reduction; TiC/W; Core-shell; COMPOSITES; TUNGSTEN; NANOPARTICLES; ENHANCEMENT; EVOLUTION; STRENGTH; ALLOYS;

D O I：

10.1016/j.jallcom.2014.08.242

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present study, one-step activation and chemical reduction process as a novel wet-chemical route was performed for the preparation of TiC/W core-shell structured ultra-fine powders. The XRD, FE-SEM, TEM and EDS results demonstrated that the as-synthesized powders are of high purity and uniform with a diameter of approximately 500 nm. It is also found that the TiC nanoparticles were well-encapsulated by W shells. Such a unique process suggests a new method for preparing X/W (X refers the water-insoluble nanoparticles) core-shell nanoparticles with different cores. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：704 / 708

页数：5

共 24 条

[11]

Liu G, 2013, NAT MATER, V12, P344, DOI [10.1038/NMAT3544, 10.1038/nmat3544]

[12] Deformability enhancement in ultra-fine grained, Ar-contained W compacts by TiC additions up to 1.1% [J].

Matsuo, S. ;

Kurishita, H. ;

Arakawa, H. ;

Takida, T. ;

Kato, M. ;

Yamamoto, Y. ;

Takebe, K. ;

Kawai, M. ;

Yoshida, N. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 492 (1-2) :475-480

[13] Synthesis and characterization of Pt-Pd nanoparticles with core-shell morphology: Nucleation and overgrowth of the Pd shells on the as-prepared and defined Pt seeds [J].

Nguyen Viet Long ;

Tong Duy Hien ;

Asaka, Toru ;

Ohtaki, Michitaka ;

Nogami, Masayuki .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (29) :7702-7709

[14] Physics basis and design of the ITER plasma-facing components [J].

Pitts, R. A. ;

Carpentier, S. ;

Escourbiac, F. ;

Hirai, T. ;

Komarov, V. ;

Kukushkin, A. S. ;

Lisgo, S. ;

Loarte, A. ;

Merola, M. ;

Mitteau, R. ;

Raffray, A. R. ;

Shimada, M. ;

Stangeby, P. C. .

JOURNAL OF NUCLEAR MATERIALS, 2011, 415 (01) :S957-S964

[15] Preparation and characterization of potassium doped tungsten [J].

Shu, Xiaoyan ;

Qiu, Haixin ;

Huang, Bo ;

Gu, Zexing ;

Yang, Jijun ;

Liao, Jiali ;

Yang, Yuanyou ;

Liu, Ning ;

Tang, Jun .

JOURNAL OF NUCLEAR MATERIALS, 2013, 440 (1-3) :414-419

[16] Thermomechanical properties of TiC particle-reinforced tungsten composites for high temperature applications [J].

Song, GM ;

Wang, YJ ;

Zhou, Y .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2003, 21 (1-2) :1-12

[17] The mechanical and thermophysical properties of ZrC/W composites at elevated temperature [J].

Song, GM ;

Wang, YJ ;

Zhou, Y .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 334 (1-2) :223-232

[18] The microstructure and elevated temperature strength of tungsten-titanium carbide composite [J].

Song, GM ;

Zhou, Y ;

Wang, YJ .

JOURNAL OF MATERIALS SCIENCE, 2002, 37 (16) :3541-3548

[19] Fabrication of nanostructured W-Y2O3 materials by chemical methods [J].

Wahlberg, Sverker ;

Yar, Mazher A. ;

Abuelnaga, Mohammad Omar ;

Salem, Hanadi G. ;

Johnsson, Mats ;

Muhammed, Mamoun .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (25) :12622-12628

[20] Shell phase selection and layer numbers of core-shell structure in monotectic alloys with stable miscibility gap [J].

Wang, N. ;

Zhang, L. ;

Zheng, Y. P. ;

Yao, W. J. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 538 :224-229

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