Triplet carbide composites of TiC, WC, and SiC

Mehdi Fattahi; Seyed Ali Delbari; Aziz Babapoor; Abbas Sabahi Namini; Mohsen Mohammadi; Mehdi Shahedi Asl

doi:10.1016/j.ceramint.2019.12.155

Triplet carbide composites of TiC, WC, and SiC

Mehdi Fattahi
, Seyed Ali Delbari
, Aziz Babapoor
, Abbas Sabahi Namini^*
, Mohsen Mohammadi
, Mehdi Shahedi Asl

^*Corresponding author for this work

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

90 Citations (Scopus)

Abstract

In this study, the influence of adding 0, 10, 20, and 30 vol% SiC_w on the microstructure and physical-mechanical properties (relative density (RD), flexural strength, and Vickers hardness) of TiC-3 wt% WC_n was investigated. All designed samples were spark plasma sintered under the same conditions: sintering temperature of 1900 °C, external pressure of 40 MPa, and dwell time of 7 min. Microstructural evaluation and relative density calculation revealed that the additives were dispersed homogeneously in the TiC matrix. Based on the Archimedes principles, RD values of >100% were measured for the composite samples with 20 and 30 vol% SiC_w, due to not accounting the formation of non-stoichiometric TiC and (Ti,W)C phases in the calculations. On the contrary, the lowest RD was related to the sample with 10 vol% SiC_w. On the other hand, the most significant values of Vickers hardness (28.6 GPa) and flexural strength (694 MPa) were obtained for TiC-3 wt% WC_n and TiC-3 wt% WC_n-20 vol% SiC_w composite samples, respectively.

Original language	English
Pages (from-to)	9070-9078
Number of pages	9
Journal	Ceramics International
Volume	46
Issue number	7
DOIs	https://doi.org/10.1016/j.ceramint.2019.12.155
Publication status	Published - May 2020
Externally published	Yes

Keywords

Characterization
SiC whiskers
Spark plasma sintering
TiC matrix composite
WC nano-particles

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10.1016/j.ceramint.2019.12.155

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@article{89f6632761474aee89e94451df127ff3,

title = "Triplet carbide composites of TiC, WC, and SiC",

abstract = "In this study, the influence of adding 0, 10, 20, and 30 vol\% SiCw on the microstructure and physical-mechanical properties (relative density (RD), flexural strength, and Vickers hardness) of TiC-3 wt\% WCn was investigated. All designed samples were spark plasma sintered under the same conditions: sintering temperature of 1900 °C, external pressure of 40 MPa, and dwell time of 7 min. Microstructural evaluation and relative density calculation revealed that the additives were dispersed homogeneously in the TiC matrix. Based on the Archimedes principles, RD values of >100\% were measured for the composite samples with 20 and 30 vol\% SiCw, due to not accounting the formation of non-stoichiometric TiC and (Ti,W)C phases in the calculations. On the contrary, the lowest RD was related to the sample with 10 vol\% SiCw. On the other hand, the most significant values of Vickers hardness (28.6 GPa) and flexural strength (694 MPa) were obtained for TiC-3 wt\% WCn and TiC-3 wt\% WCn-20 vol\% SiCw composite samples, respectively.",

keywords = "Characterization, SiC whiskers, Spark plasma sintering, TiC matrix composite, WC nano-particles",

author = "Mehdi Fattahi and Delbari, \{Seyed Ali\} and Aziz Babapoor and \{Sabahi Namini\}, Abbas and Mohsen Mohammadi and \{Shahedi Asl\}, Mehdi",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd and Techna Group S.r.l.",

year = "2020",

month = may,

doi = "10.1016/j.ceramint.2019.12.155",

language = "English",

volume = "46",

pages = "9070--9078",

journal = "Ceramics International",

issn = "0272-8842",

number = "7",

}

TY - JOUR

T1 - Triplet carbide composites of TiC, WC, and SiC

AU - Fattahi, Mehdi

AU - Delbari, Seyed Ali

AU - Babapoor, Aziz

AU - Sabahi Namini, Abbas

AU - Mohammadi, Mohsen

AU - Shahedi Asl, Mehdi

PY - 2020/5

Y1 - 2020/5

N2 - In this study, the influence of adding 0, 10, 20, and 30 vol% SiCw on the microstructure and physical-mechanical properties (relative density (RD), flexural strength, and Vickers hardness) of TiC-3 wt% WCn was investigated. All designed samples were spark plasma sintered under the same conditions: sintering temperature of 1900 °C, external pressure of 40 MPa, and dwell time of 7 min. Microstructural evaluation and relative density calculation revealed that the additives were dispersed homogeneously in the TiC matrix. Based on the Archimedes principles, RD values of >100% were measured for the composite samples with 20 and 30 vol% SiCw, due to not accounting the formation of non-stoichiometric TiC and (Ti,W)C phases in the calculations. On the contrary, the lowest RD was related to the sample with 10 vol% SiCw. On the other hand, the most significant values of Vickers hardness (28.6 GPa) and flexural strength (694 MPa) were obtained for TiC-3 wt% WCn and TiC-3 wt% WCn-20 vol% SiCw composite samples, respectively.

AB - In this study, the influence of adding 0, 10, 20, and 30 vol% SiCw on the microstructure and physical-mechanical properties (relative density (RD), flexural strength, and Vickers hardness) of TiC-3 wt% WCn was investigated. All designed samples were spark plasma sintered under the same conditions: sintering temperature of 1900 °C, external pressure of 40 MPa, and dwell time of 7 min. Microstructural evaluation and relative density calculation revealed that the additives were dispersed homogeneously in the TiC matrix. Based on the Archimedes principles, RD values of >100% were measured for the composite samples with 20 and 30 vol% SiCw, due to not accounting the formation of non-stoichiometric TiC and (Ti,W)C phases in the calculations. On the contrary, the lowest RD was related to the sample with 10 vol% SiCw. On the other hand, the most significant values of Vickers hardness (28.6 GPa) and flexural strength (694 MPa) were obtained for TiC-3 wt% WCn and TiC-3 wt% WCn-20 vol% SiCw composite samples, respectively.

KW - Characterization

KW - SiC whiskers

KW - Spark plasma sintering

KW - TiC matrix composite

KW - WC nano-particles

UR - https://www.scopus.com/pages/publications/85076992116

U2 - 10.1016/j.ceramint.2019.12.155

DO - 10.1016/j.ceramint.2019.12.155

M3 - Article

AN - SCOPUS:85076992116

SN - 0272-8842

VL - 46

SP - 9070

EP - 9078

JO - Ceramics International

JF - Ceramics International

IS - 7

ER -

Triplet carbide composites of TiC, WC, and SiC

Abstract

Keywords

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