Densification, characterization and oxidation studies of novel TiB2+EuB6compounds

T.S.R.C. Murthy; J.K. Sonber; B. Vishwanadh; A. Nagaraj; K. Sairam; R.D. Bedse; J.K. Chakravartty

doi:10.1016/j.jallcom.2016.01.216

Densification, characterization and oxidation studies of novel TiB2+EuB6compounds

T.S.R.C. Murthy, J.K. Sonber, B. Vishwanadh, A. Nagaraj, K. Sairam, R.D. Bedse, J.K. Chakravartty

Metallurgy and Materials

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

13 Citations (Scopus)

Abstract

TiB2+EuB6 ceramic samples with different EuB6 contents were fabricated using hot -pressing technique. The introduction of EuB6 promoted the sinterability, fracture toughness and oxidation resistance of TiB2. 98.7% TD achieved by adding 2.5% EuB6 to TiB2 by hot pressing at a relatively low temperature of 1750 °C, 35 MPa, 1h. Formation of complete solid solution of TiB2+EuB6 observed for all the samples by XRD, EDS and EBSD. Hardness of all samples is measured in the range of 24–27 GPa ∼50% higher fracture toughness value of 5.2 MPa m1/2 was obtained in the 2.5% EuB6 contained sample compared to monolithic TiB2. Enhancement of oxidation resistance of TiB2 was observed by EuB6 addition due to the formation of EuBO3 and Eu2O3. Oxidized cross section of TiB2+EuB6 sample was measured as 340 μm, which is ∼35% less than that of monolithic TiB2 (520 μm), after oxidation at 1400 °C for 8h.

Original language	English
Pages (from-to)	85-95
Journal	Journal of Alloys and Compounds
Volume	670
Early online date	30 Jan 2016
DOIs	https://doi.org/10.1016/j.jallcom.2016.01.216
Publication status	Published - 15 Jun 2016

Keywords

TiB2
EuB6
hot-pressing
hardness
fracture toughness
elastic modulus
oxidation studies

Access to Document

10.1016/j.jallcom.2016.01.216Licence: None: All rights reserved

https://www.sciencedirect.com/science/article/pii/S0925838816302171Licence: None: All rights reserved

Cite this

@article{dfb555af6e9b4877ac0990858c05b9a0,

title = "Densification, characterization and oxidation studies of novel TiB2+EuB6compounds",

abstract = "TiB2+EuB6 ceramic samples with different EuB6 contents were fabricated using hot -pressing technique. The introduction of EuB6 promoted the sinterability, fracture toughness and oxidation resistance of TiB2. 98.7% TD achieved by adding 2.5% EuB6 to TiB2 by hot pressing at a relatively low temperature of 1750 °C, 35 MPa, 1h. Formation of complete solid solution of TiB2+EuB6 observed for all the samples by XRD, EDS and EBSD. Hardness of all samples is measured in the range of 24–27 GPa ∼50% higher fracture toughness value of 5.2 MPa m1/2 was obtained in the 2.5% EuB6 contained sample compared to monolithic TiB2. Enhancement of oxidation resistance of TiB2 was observed by EuB6 addition due to the formation of EuBO3 and Eu2O3. Oxidized cross section of TiB2+EuB6 sample was measured as 340 μm, which is ∼35% less than that of monolithic TiB2 (520 μm), after oxidation at 1400 °C for 8h.",

keywords = "TiB2, EuB6, hot-pressing, hardness, fracture toughness, elastic modulus, oxidation studies",

author = "T.S.R.C. Murthy and J.K. Sonber and B. Vishwanadh and A. Nagaraj and K. Sairam and R.D. Bedse and J.K. Chakravartty",

year = "2016",

month = jun,

day = "15",

doi = "10.1016/j.jallcom.2016.01.216",

language = "English",

volume = "670",

pages = "85--95",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier",

}

TY - JOUR

T1 - Densification, characterization and oxidation studies of novel TiB2+EuB6compounds

AU - Murthy, T.S.R.C.

AU - Sonber, J.K.

AU - Vishwanadh, B.

AU - Nagaraj, A.

AU - Sairam, K.

AU - Bedse, R.D.

AU - Chakravartty, J.K.

PY - 2016/6/15

Y1 - 2016/6/15

N2 - TiB2+EuB6 ceramic samples with different EuB6 contents were fabricated using hot -pressing technique. The introduction of EuB6 promoted the sinterability, fracture toughness and oxidation resistance of TiB2. 98.7% TD achieved by adding 2.5% EuB6 to TiB2 by hot pressing at a relatively low temperature of 1750 °C, 35 MPa, 1h. Formation of complete solid solution of TiB2+EuB6 observed for all the samples by XRD, EDS and EBSD. Hardness of all samples is measured in the range of 24–27 GPa ∼50% higher fracture toughness value of 5.2 MPa m1/2 was obtained in the 2.5% EuB6 contained sample compared to monolithic TiB2. Enhancement of oxidation resistance of TiB2 was observed by EuB6 addition due to the formation of EuBO3 and Eu2O3. Oxidized cross section of TiB2+EuB6 sample was measured as 340 μm, which is ∼35% less than that of monolithic TiB2 (520 μm), after oxidation at 1400 °C for 8h.

AB - TiB2+EuB6 ceramic samples with different EuB6 contents were fabricated using hot -pressing technique. The introduction of EuB6 promoted the sinterability, fracture toughness and oxidation resistance of TiB2. 98.7% TD achieved by adding 2.5% EuB6 to TiB2 by hot pressing at a relatively low temperature of 1750 °C, 35 MPa, 1h. Formation of complete solid solution of TiB2+EuB6 observed for all the samples by XRD, EDS and EBSD. Hardness of all samples is measured in the range of 24–27 GPa ∼50% higher fracture toughness value of 5.2 MPa m1/2 was obtained in the 2.5% EuB6 contained sample compared to monolithic TiB2. Enhancement of oxidation resistance of TiB2 was observed by EuB6 addition due to the formation of EuBO3 and Eu2O3. Oxidized cross section of TiB2+EuB6 sample was measured as 340 μm, which is ∼35% less than that of monolithic TiB2 (520 μm), after oxidation at 1400 °C for 8h.

KW - TiB2

KW - EuB6

KW - hot-pressing

KW - hardness

KW - fracture toughness

KW - elastic modulus

KW - oxidation studies

UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84983009801&partnerID=MN8TOARS

U2 - 10.1016/j.jallcom.2016.01.216

DO - 10.1016/j.jallcom.2016.01.216

M3 - Article

SN - 0925-8388

VL - 670

SP - 85

EP - 95

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Densification, characterization and oxidation studies of novel TiB2+EuB6compounds

Abstract

Keywords

Access to Document

Fingerprint

Cite this