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Title: Mechanical and Tribological Behavior of ZrB{sub 2}-TiB{sub 2} System Prepared by Mechanical Activation Spark Plasma Sintering Technique

Abstract

ZrB{sub 2}-TiB{sub 2} system among varying amount of TiB{sub 2} loading (5, 10, 15, 20 and 30 wt.%) was prepared by mechanical activation spark plasma sintering at 2100 °C for 15-min dwell time under 50 MPa uniaxial pressure in argon atmosphere. The effect of the TiB{sub 2} loading on properties like physical, mechanical and tribological of the prepared samples was studied and evaluated with monolithic ZrB{sub 2} ceramic. Finally, almost fully dense samples (> 96% of theoretical density) were fabricated. Microstructural observation and XRD phase analysis of sintered compact revealed that TiB{sub 2} completely went into the ZrB{sub 2} structure by formation of solid solution with ZrB{sub 2} phase. ZrB{sub 2}-TiB{sub 2} (30 wt.%) showed the highest Vickers micro-hardness (H{sub V}) of 20.64 GPa at 10 N load. On addition of TiB{sub 2}, the fracture toughness of the ZrB{sub 2}-TiB{sub 2} improved up to 4.69 ± 0.43 MPa m{sup 1/2} over monolithic ZrB{sub 2} at 10 N load. At 10 N load, the scratch resistance coefficient, wear rate and wear resistance coefficient of ZrB{sub 2}-TiB{sub 2} (30 wt.%) reached a lowest value of 0.32, 0.35 mm{sup 3}/N m and 0.008, respectively, at 10 N load than other ZrB{sub 2} compositions.

Authors:
 [1];  [1]
  1. Kalyani Government Engineering College, Mechanical Engineering Department (India)
Publication Date:
OSTI Identifier:
22863202
Resource Type:
Journal Article
Journal Name:
Journal of Materials Engineering and Performance
Additional Journal Information:
Journal Volume: 27; Journal Issue: 11; Other Information: Copyright (c) 2018 ASM International; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1059-9495
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERAMICS; FRACTURE PROPERTIES; HARDNESS; MICROSTRUCTURE; PHASE STUDIES; PRESSURE RANGE GIGA PA; PRESSURE RANGE MEGA PA 10-100; SOLID SOLUTIONS; TITANIUM BORIDES; TRIBOLOGY; WEAR RESISTANCE; X-RAY DIFFRACTION; ZIRCONIUM BORIDES

Citation Formats

Mondal, S., Chakraborty, S., E-mail: shirshenduc@yahoo.com, and Das, S. Mechanical and Tribological Behavior of ZrB{sub 2}-TiB{sub 2} System Prepared by Mechanical Activation Spark Plasma Sintering Technique. United States: N. p., 2018. Web. doi:10.1007/S11665-018-3666-2.
Mondal, S., Chakraborty, S., E-mail: shirshenduc@yahoo.com, & Das, S. Mechanical and Tribological Behavior of ZrB{sub 2}-TiB{sub 2} System Prepared by Mechanical Activation Spark Plasma Sintering Technique. United States. https://doi.org/10.1007/S11665-018-3666-2
Mondal, S., Chakraborty, S., E-mail: shirshenduc@yahoo.com, and Das, S. 2018. "Mechanical and Tribological Behavior of ZrB{sub 2}-TiB{sub 2} System Prepared by Mechanical Activation Spark Plasma Sintering Technique". United States. https://doi.org/10.1007/S11665-018-3666-2.
@article{osti_22863202,
title = {Mechanical and Tribological Behavior of ZrB{sub 2}-TiB{sub 2} System Prepared by Mechanical Activation Spark Plasma Sintering Technique},
author = {Mondal, S. and Chakraborty, S., E-mail: shirshenduc@yahoo.com and Das, S.},
abstractNote = {ZrB{sub 2}-TiB{sub 2} system among varying amount of TiB{sub 2} loading (5, 10, 15, 20 and 30 wt.%) was prepared by mechanical activation spark plasma sintering at 2100 °C for 15-min dwell time under 50 MPa uniaxial pressure in argon atmosphere. The effect of the TiB{sub 2} loading on properties like physical, mechanical and tribological of the prepared samples was studied and evaluated with monolithic ZrB{sub 2} ceramic. Finally, almost fully dense samples (> 96% of theoretical density) were fabricated. Microstructural observation and XRD phase analysis of sintered compact revealed that TiB{sub 2} completely went into the ZrB{sub 2} structure by formation of solid solution with ZrB{sub 2} phase. ZrB{sub 2}-TiB{sub 2} (30 wt.%) showed the highest Vickers micro-hardness (H{sub V}) of 20.64 GPa at 10 N load. On addition of TiB{sub 2}, the fracture toughness of the ZrB{sub 2}-TiB{sub 2} improved up to 4.69 ± 0.43 MPa m{sup 1/2} over monolithic ZrB{sub 2} at 10 N load. At 10 N load, the scratch resistance coefficient, wear rate and wear resistance coefficient of ZrB{sub 2}-TiB{sub 2} (30 wt.%) reached a lowest value of 0.32, 0.35 mm{sup 3}/N m and 0.008, respectively, at 10 N load than other ZrB{sub 2} compositions.},
doi = {10.1007/S11665-018-3666-2},
url = {https://www.osti.gov/biblio/22863202}, journal = {Journal of Materials Engineering and Performance},
issn = {1059-9495},
number = 11,
volume = 27,
place = {United States},
year = {2018},
month = {11}
}