Influences of metallic Co and mechanical alloying on the microstructural and mechanical properties of TiB 2 ceramics prepared via pressureless sintering

Duygu Aĝaoĝullari; Hasan Gökçe; Ismail Duman; M. Lütfi Öveçoĝlu

doi:10.1016/j.jeurceramsoc.2011.10.033

Influences of metallic Co and mechanical alloying on the microstructural and mechanical properties of TiB ₂ ceramics prepared via pressureless sintering

Duygu Aĝaoĝullari^*
, Hasan Gökçe
, Ismail Duman
, M. Lütfi Öveçoĝlu

^*Bu çalışma için yazışmadan sorumlu yazar

Metalurji ve Malzeme Müh.Böl.

Istanbul Technical University

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

39 Atıf (Scopus)

Özet

This study reports the influences of metallic cobalt (Co) and mechanical alloying (MA) on the microstructural and mechanical properties of TiB ₂ ceramics prepared by using a combined method of cold pressing and sintering. The effects of Co addition (0, 5, 10 and 20wt.%) and mechanical alloying duration (0, 3, 6 and 9h) on the properties of TiB ₂ ceramics were investigated. MA experiments were carried out in a Spex™ 8000D Mixer/Mill and milled powders were subsequently compacted to cylindrical preforms by uniaxial pressing at 400MPa. The green compacts were sintered in a controlled atmosphere at 1550°C for 1h. Phase and microstructural characterizations of the mechanically alloyed (MA'd) and sintered samples were performed by X-ray diffractometer (XRD), optical microscope (OM) and scanning electron microscope (SEM). Density measurements were conducted using Archimedes method. Vickers hardness, elastic modulus and fracture toughness of the sintered samples were measured using Indentation technique.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	1949-1956
Sayfa sayısı	8
Dergi	Journal of the European Ceramic Society
Hacim	32
Basın numarası	9
DOI'lar	https://doi.org/10.1016/j.jeurceramsoc.2011.10.033
Yayın durumu	Yayınlandı - Tem 2012

Finansman

We would like to express our appreciations to Prof. Dr. Hüseyin Çimenoğlu for his help in elastic modulus and fracture toughness measurements. Further, we would like to express our gratitude to State Planning Organization (DPT) for funding the projects entitled “Advanced Technologies in Engineering” with the project number 2001K120750 and “Development of Al–Cu Based Metal Matrix Composites via Powder Metallurgy Techniques” with the project number 90189 out of which the main infrastructure of the Particulate Materials Laboratories was founded.

Finansörler	Finansör numarası
Al–Cu Based Metal Matrix Composites via Powder Metallurgy Techniques	90189
DPT	2001K120750
Devlet Planlama Örgütü

Belgeye Erişim

10.1016/j.jeurceramsoc.2011.10.033

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Influences of metallic Co and mechanical alloying on the microstructural and mechanical properties of TiB 2 ceramics prepared via pressureless sintering",

abstract = "This study reports the influences of metallic cobalt (Co) and mechanical alloying (MA) on the microstructural and mechanical properties of TiB 2 ceramics prepared by using a combined method of cold pressing and sintering. The effects of Co addition (0, 5, 10 and 20wt.\%) and mechanical alloying duration (0, 3, 6 and 9h) on the properties of TiB 2 ceramics were investigated. MA experiments were carried out in a Spex{\texttrademark} 8000D Mixer/Mill and milled powders were subsequently compacted to cylindrical preforms by uniaxial pressing at 400MPa. The green compacts were sintered in a controlled atmosphere at 1550°C for 1h. Phase and microstructural characterizations of the mechanically alloyed (MA'd) and sintered samples were performed by X-ray diffractometer (XRD), optical microscope (OM) and scanning electron microscope (SEM). Density measurements were conducted using Archimedes method. Vickers hardness, elastic modulus and fracture toughness of the sintered samples were measured using Indentation technique.",

keywords = "Cobalt, Milling, Pressing, Sintering, Titanium diboride",

author = "Duygu Aĝaoĝullari and Hasan G{\"o}k{\c c}e and Ismail Duman and {\"O}ve{\c c}oĝlu, \{M. L{\"u}tfi\}",

year = "2012",

month = jul,

doi = "10.1016/j.jeurceramsoc.2011.10.033",

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T1 - Influences of metallic Co and mechanical alloying on the microstructural and mechanical properties of TiB 2 ceramics prepared via pressureless sintering

AU - Aĝaoĝullari, Duygu

AU - Gökçe, Hasan

AU - Duman, Ismail

AU - Öveçoĝlu, M. Lütfi

PY - 2012/7

Y1 - 2012/7

N2 - This study reports the influences of metallic cobalt (Co) and mechanical alloying (MA) on the microstructural and mechanical properties of TiB 2 ceramics prepared by using a combined method of cold pressing and sintering. The effects of Co addition (0, 5, 10 and 20wt.%) and mechanical alloying duration (0, 3, 6 and 9h) on the properties of TiB 2 ceramics were investigated. MA experiments were carried out in a Spex™ 8000D Mixer/Mill and milled powders were subsequently compacted to cylindrical preforms by uniaxial pressing at 400MPa. The green compacts were sintered in a controlled atmosphere at 1550°C for 1h. Phase and microstructural characterizations of the mechanically alloyed (MA'd) and sintered samples were performed by X-ray diffractometer (XRD), optical microscope (OM) and scanning electron microscope (SEM). Density measurements were conducted using Archimedes method. Vickers hardness, elastic modulus and fracture toughness of the sintered samples were measured using Indentation technique.

AB - This study reports the influences of metallic cobalt (Co) and mechanical alloying (MA) on the microstructural and mechanical properties of TiB 2 ceramics prepared by using a combined method of cold pressing and sintering. The effects of Co addition (0, 5, 10 and 20wt.%) and mechanical alloying duration (0, 3, 6 and 9h) on the properties of TiB 2 ceramics were investigated. MA experiments were carried out in a Spex™ 8000D Mixer/Mill and milled powders were subsequently compacted to cylindrical preforms by uniaxial pressing at 400MPa. The green compacts were sintered in a controlled atmosphere at 1550°C for 1h. Phase and microstructural characterizations of the mechanically alloyed (MA'd) and sintered samples were performed by X-ray diffractometer (XRD), optical microscope (OM) and scanning electron microscope (SEM). Density measurements were conducted using Archimedes method. Vickers hardness, elastic modulus and fracture toughness of the sintered samples were measured using Indentation technique.

KW - Cobalt

KW - Milling

KW - Pressing

KW - Sintering

KW - Titanium diboride

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M3 - Article

AN - SCOPUS:84859514813

SN - 0955-2219

VL - 32

SP - 1949

EP - 1956

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

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