High temperature stable WC1-x@C and TiC@C core-shell nanoparticles by pulsed plasma in liquid

被引：31

作者：

Abdullaeva, Zhypargul ^{[1
]}

Omurzak, Emil ^{[2
]}

Iwamoto, Chihiro ^{[3
]}

Okudera, Hiroki ^{[4
]}

Koinuma, Michio ^{[5
]}

Takebe, Shintaro ^{[2
]}

Sulaimankulova, Saadat ^{[6
]}

Mashimo, Tsutomu ^{[7
]}

机构：

[1] Kumamoto Univ, Grad Sch Sci & Technol, Kumamoto 8608555, Japan

[2] Kumamoto Univ, Prior Org Innovat & Excellence, Kumamoto 8608555, Japan

[3] Kumamoto Univ, Fac Engn, Kumamoto 8608555, Japan

[4] Kanazawa Univ, Inst Sci & Engn, Fac Nat Syst, Kanazawa, Ishikawa 9201192, Japan

[5] Kumamoto Univ, Fac Appl Chem & Biochem, Kumamoto 8608555, Japan

[6] Natl Acad Sci, Inst Chem & Chem Technol, Bishkek 720071, Kyrgyzstan

[7] Kumamoto Univ, Shock Wave & Condensed Matter Res Ctr, Kumamoto 8608555, Japan

来源：

RSC ADVANCES | 2013年 / 3卷 / 02期

关键词：

ONION-LIKE CARBON; TITANIUM CARBIDE; TUNGSTEN; ENCAPSULATION; COMPOSITES; MOLYBDENUM; COATINGS;

D O I：

10.1039/c2ra22028h

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

High temperature phase tungsten carbide and titanium carbide coated with graphitic carbon (WC1-x@C and TiC@C) nanoparticles were synthesized by pulsed plasma in liquid. HRTEM results show that the average size of WC1-x@C and TiC@C nanoparticles are 30 and 35 nm, respectively. Raman spectroscopy revealed well-organized graphitic coatings, which make the nanoparticles stable at higher temperatures and resistant to oxidation. Refinement of the XRD profiles showed larger cell parameters compared to JCPDS cards. Furthermore, thermogravimetric analyses showed the higher thermal stability up to 601 and 543.4 degrees C, for the WC1-x@C and TiC@C nanoparticles, these are 43% and 36% more compared to the thermal stability of previously reported nanoparticles, which degraded at around 350 degrees C.

引用

页码：513 / 519

页数：7

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