TEM characterization of hot-pressed ZrB2-SiC-AlN composites

Van-Huy Nguyen; Seyed Ali Delbari; Zohre Ahmadi; Mehdi Shahedi Asl; Mahdi Ghassemi Kakroudi; Quyet Van Le; Abbas Sabahi Namini; Mohammadreza Shokouhimehr; Mohsen Mohammadi; Wanxi Peng

Results in Physics (Dec 2020)

TEM characterization of hot-pressed ZrB2-SiC-AlN composites

Van-Huy Nguyen,
Seyed Ali Delbari,
Zohre Ahmadi,
Mehdi Shahedi Asl,
Mahdi Ghassemi Kakroudi,
Quyet Van Le,
Abbas Sabahi Namini,
Mohammadreza Shokouhimehr,
Mohsen Mohammadi,
Wanxi Peng

Affiliations

Van-Huy Nguyen: Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam; Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam; Corresponding authors at: Ton Duc Thang University, Ho Chi Minh City, Vietnam (V-H. Nguyen). Duy Tan University, Da Nang 550000, Vietnam (Q.V. Le). University of Mohaghegh Ardabili, Namin, Iran (A. Sabahi Namini). Seoul National University, Seoul 08826, Republic of Korea (M. Shokouhimehr). Henan Agricultural University, Zhengzhou 450002, China, China (W. Peng).
Seyed Ali Delbari: Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
Zohre Ahmadi: Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
Mehdi Shahedi Asl: Marine Additive Manufacturing Centre of Excellence (MAMCE), University of New Brunswick, Fredericton, NB E3B 5A1, Canada
Mahdi Ghassemi Kakroudi: Department of Materials Science and Engineering, University of Tabriz, Tabriz, Iran
Quyet Van Le: Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam; Corresponding authors at: Ton Duc Thang University, Ho Chi Minh City, Vietnam (V-H. Nguyen). Duy Tan University, Da Nang 550000, Vietnam (Q.V. Le). University of Mohaghegh Ardabili, Namin, Iran (A. Sabahi Namini). Seoul National University, Seoul 08826, Republic of Korea (M. Shokouhimehr). Henan Agricultural University, Zhengzhou 450002, China, China (W. Peng).
Abbas Sabahi Namini: Department of Engineering Sciences, Faculty of Advanced Technologies, University of Mohaghegh Ardabili, Namin, Iran; Department of Engineering Sciences, Faculty of Advanced Technologies, Sabalan University of Advanced Technologies (SUAT), Namin, Iran; Corresponding authors at: Ton Duc Thang University, Ho Chi Minh City, Vietnam (V-H. Nguyen). Duy Tan University, Da Nang 550000, Vietnam (Q.V. Le). University of Mohaghegh Ardabili, Namin, Iran (A. Sabahi Namini). Seoul National University, Seoul 08826, Republic of Korea (M. Shokouhimehr). Henan Agricultural University, Zhengzhou 450002, China, China (W. Peng).
Mohammadreza Shokouhimehr: Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea; Corresponding authors at: Ton Duc Thang University, Ho Chi Minh City, Vietnam (V-H. Nguyen). Duy Tan University, Da Nang 550000, Vietnam (Q.V. Le). University of Mohaghegh Ardabili, Namin, Iran (A. Sabahi Namini). Seoul National University, Seoul 08826, Republic of Korea (M. Shokouhimehr). Henan Agricultural University, Zhengzhou 450002, China, China (W. Peng).
Mohsen Mohammadi: Marine Additive Manufacturing Centre of Excellence (MAMCE), University of New Brunswick, Fredericton, NB E3B 5A1, Canada
Wanxi Peng: College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; School of Automotive Engineering, Huanghe Jiaotong University, Jiaozuo 454950, China; Corresponding authors at: Ton Duc Thang University, Ho Chi Minh City, Vietnam (V-H. Nguyen). Duy Tan University, Da Nang 550000, Vietnam (Q.V. Le). University of Mohaghegh Ardabili, Namin, Iran (A. Sabahi Namini). Seoul National University, Seoul 08826, Republic of Korea (M. Shokouhimehr). Henan Agricultural University, Zhengzhou 450002, China, China (W. Peng).

Journal volume & issue: Vol. 19
p. 103348

Abstract

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The impact of the AlN additive on the microstructural features and consolidation behavior of the ZrB2-SiC system was studied. For this objective, different weight percentages of AlN were added to the ZrB2-30 vol% SiC ceramics, in which 4 wt% phenolic resin was used as a binder. All specimens were hot-pressed at sintering circumstances of 1900 °C under 10 MPa for a dwelling time of 120 min. The addition of AlN had a remarkable effect on the sintering behavior of ZrB2-SiC, attaining fully dense composite samples. Although the thermodynamic study suggested the formation and consumption of several compounds over the hot-pressing, only the peaks related to carbon was detected in the XRD patterns. The thermodynamic assessment also implied the generation of a liquid phase over the sintering as the main factor in boosting the sinterability of specimens. The microstructure of as-produced ceramics was also inspected using FESEM and HRTEM images. Such micrographs endorsed the beneficial role of liquid phase sintering mechanism in forming coherent and strong interfaces among the available phases. Fractographical evaluation manifested the transgranular type as the dominant fracture mode for all hot-pressed composites.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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