Synthesis, mechanical and physical properties of bulk Zr2Al4C5 ceramic

Rubing Zhang; Guiqing Chen; Wenbo Han

doi:10.1016/j.matchemphys.2009.08.051

Synthesis, mechanical and physical properties of bulk Zr₂Al₄C₅ ceramic

Rubing Zhang^*
, Guiqing Chen
, Wenbo Han

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Bulk Zr₂Al₄C₅ ceramics was synthesized by an in situ reactive hot-pressing process using ZrC, Al and carbon black as staring materials. The reaction path of synthesis was discussed based on differential thermal analysis, Raman spectra and X-ray diffraction results. Compared with the reported Zr₂Al₃C₄, Zr₂Al₄C₅ has a relatively high hardness (Vickers hardness of 12.2 GPa), superior strength (flexural strength of 420 MPa) and lower electrical resistivity (1.05 μΩ m). In addition, the room-temperature thermal conductivity value, 14.6 W (m K)^-1 for Zr₂Al₄C₅, was smaller than the value for Zr₂A₃C₄ ceramics (15.5 W (m K)^-1), and the heat capacity of Zr₂Al₄C₅ is much higher than that of Zr₂A₃C₄ in the overall temperature range. The results here indicated that Zr₂Al₄C₅ is a potential high-temperature structural ceramic.

Original language	English
Pages (from-to)	261-265
Number of pages	5
Journal	Materials Chemistry and Physics
Volume	119
Issue number	1-2
DOIs	https://doi.org/10.1016/j.matchemphys.2009.08.051
State	Published - 15 Jan 2010

Keywords

Mechanical properties
Microstructure
Reactive hot-pressing
ZrAlC

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10.1016/j.matchemphys.2009.08.051

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title = "Synthesis, mechanical and physical properties of bulk Zr2Al4C5 ceramic",

abstract = "Bulk Zr2Al4C5 ceramics was synthesized by an in situ reactive hot-pressing process using ZrC, Al and carbon black as staring materials. The reaction path of synthesis was discussed based on differential thermal analysis, Raman spectra and X-ray diffraction results. Compared with the reported Zr2Al3C4, Zr2Al4C5 has a relatively high hardness (Vickers hardness of 12.2 GPa), superior strength (flexural strength of 420 MPa) and lower electrical resistivity (1.05 μΩ m). In addition, the room-temperature thermal conductivity value, 14.6 W (m K)-1 for Zr2Al4C5, was smaller than the value for Zr2A3C4 ceramics (15.5 W (m K)-1), and the heat capacity of Zr2Al4C5 is much higher than that of Zr2A3C4 in the overall temperature range. The results here indicated that Zr2Al4C5 is a potential high-temperature structural ceramic.",

keywords = "Mechanical properties, Microstructure, Reactive hot-pressing, ZrAlC",

author = "Rubing Zhang and Guiqing Chen and Wenbo Han",

year = "2010",

month = jan,

day = "15",

doi = "10.1016/j.matchemphys.2009.08.051",

language = "英语",

volume = "119",

pages = "261--265",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Synthesis, mechanical and physical properties of bulk Zr2Al4C5 ceramic

AU - Zhang, Rubing

AU - Chen, Guiqing

AU - Han, Wenbo

PY - 2010/1/15

Y1 - 2010/1/15

N2 - Bulk Zr2Al4C5 ceramics was synthesized by an in situ reactive hot-pressing process using ZrC, Al and carbon black as staring materials. The reaction path of synthesis was discussed based on differential thermal analysis, Raman spectra and X-ray diffraction results. Compared with the reported Zr2Al3C4, Zr2Al4C5 has a relatively high hardness (Vickers hardness of 12.2 GPa), superior strength (flexural strength of 420 MPa) and lower electrical resistivity (1.05 μΩ m). In addition, the room-temperature thermal conductivity value, 14.6 W (m K)-1 for Zr2Al4C5, was smaller than the value for Zr2A3C4 ceramics (15.5 W (m K)-1), and the heat capacity of Zr2Al4C5 is much higher than that of Zr2A3C4 in the overall temperature range. The results here indicated that Zr2Al4C5 is a potential high-temperature structural ceramic.

AB - Bulk Zr2Al4C5 ceramics was synthesized by an in situ reactive hot-pressing process using ZrC, Al and carbon black as staring materials. The reaction path of synthesis was discussed based on differential thermal analysis, Raman spectra and X-ray diffraction results. Compared with the reported Zr2Al3C4, Zr2Al4C5 has a relatively high hardness (Vickers hardness of 12.2 GPa), superior strength (flexural strength of 420 MPa) and lower electrical resistivity (1.05 μΩ m). In addition, the room-temperature thermal conductivity value, 14.6 W (m K)-1 for Zr2Al4C5, was smaller than the value for Zr2A3C4 ceramics (15.5 W (m K)-1), and the heat capacity of Zr2Al4C5 is much higher than that of Zr2A3C4 in the overall temperature range. The results here indicated that Zr2Al4C5 is a potential high-temperature structural ceramic.

KW - Mechanical properties

KW - Microstructure

KW - Reactive hot-pressing

KW - ZrAlC

UR - https://www.scopus.com/pages/publications/70350616214

U2 - 10.1016/j.matchemphys.2009.08.051

DO - 10.1016/j.matchemphys.2009.08.051

M3 - 文章

AN - SCOPUS:70350616214

SN - 0254-0584

VL - 119

SP - 261

EP - 265

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 1-2

ER -

Synthesis, mechanical and physical properties of bulk Zr₂Al₄C₅ ceramic

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Keywords

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