Effects of Y2O3 additions on mechanically alloyed and sintered W-4 wt.% SiC composites

Selim Coşkun; M. Lütfi Öveçoǧlu

doi:10.1016/j.ijrmhm.2011.04.013

Effects of Y₂O₃ additions on mechanically alloyed and sintered W-4 wt.% SiC composites

Selim Coşkun^*
, M. Lütfi Öveçoǧlu

^*Bu çalışma için yazışmadan sorumlu yazar

Metalurji ve Malzeme Müh.Böl.

Istanbul Technical University

Araştırma çıktısı: Dergi yayını › Makale › Hakemli

19 Atıf (Scopus)

Özet

In this study, the effect of Y₂O₃ additions on the microstructural and the physical properties of W-SiC composites was investigated. Powder blends of W-4 wt.% SiC, W-4 wt.% SiC-1 wt.% Y ₂O₃ and W-4 wt.% SiC-5 wt.% Y₂O₃ were mechanically alloyed (MA'd) using a Spex mill for 24 h. MA'd composite powders were sintered under inert Ar and reducing H₂ gas conditions at 1680 °C for 1 h. Microstructural and morphological characterizations of composite powders and sintered samples were carried out via SEM and XRD analyses. Furthermore, density measurements and hardness measurements of sintered samples were carried out. A highest Vickers microhardness value of 11.4 GPa was measured for the sintered W-4 wt.% SiC-5 wt.% Y₂O ₃ while W-4 wt.% SiC sample possessed the highest relative density value of 97.7%.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	651-655
Sayfa sayısı	5
Dergi	International Journal of Refractory Metals and Hard Materials
Hacim	29
Basın numarası	6
DOI'lar	https://doi.org/10.1016/j.ijrmhm.2011.04.013
Yayın durumu	Yayınlandı - Kas 2011

Finansman

The authors wish to express their thanks to the Scientific and Technological Research Council of Turkey (TUBİTAK ) for the financial support under the project number 105M065 . Laboratory equipment utilized in this study was purchased through the research grant 2001 K 750-90146 provided by the State Planning Organization (DPT ) and this is gratefully acknowledged.

Finansörler	Finansör numarası
DPT
TUBİTAK	105M065, 2001 K 750-90146
Devlet Planlama Örgütü
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

Belgeye Erişim

10.1016/j.ijrmhm.2011.04.013

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Effects of Y2O3 additions on mechanically alloyed and sintered W-4 wt.\% SiC composites",

abstract = "In this study, the effect of Y2O3 additions on the microstructural and the physical properties of W-SiC composites was investigated. Powder blends of W-4 wt.\% SiC, W-4 wt.\% SiC-1 wt.\% Y 2O3 and W-4 wt.\% SiC-5 wt.\% Y2O3 were mechanically alloyed (MA'd) using a Spex mill for 24 h. MA'd composite powders were sintered under inert Ar and reducing H2 gas conditions at 1680 °C for 1 h. Microstructural and morphological characterizations of composite powders and sintered samples were carried out via SEM and XRD analyses. Furthermore, density measurements and hardness measurements of sintered samples were carried out. A highest Vickers microhardness value of 11.4 GPa was measured for the sintered W-4 wt.\% SiC-5 wt.\% Y2O 3 while W-4 wt.\% SiC sample possessed the highest relative density value of 97.7\%.",

keywords = "Mechanical alloying, Microstructure, Solid-state sintering, W-SiC, YO",

author = "Selim Co{\c s}kun and {\"O}ve{\c c}oǧlu, \{M. L{\"u}tfi\}",

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month = nov,

doi = "10.1016/j.ijrmhm.2011.04.013",

language = "English",

volume = "29",

pages = "651--655",

journal = "International Journal of Refractory Metals and Hard Materials",

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TY - JOUR

T1 - Effects of Y2O3 additions on mechanically alloyed and sintered W-4 wt.% SiC composites

AU - Coşkun, Selim

AU - Öveçoǧlu, M. Lütfi

PY - 2011/11

Y1 - 2011/11

N2 - In this study, the effect of Y2O3 additions on the microstructural and the physical properties of W-SiC composites was investigated. Powder blends of W-4 wt.% SiC, W-4 wt.% SiC-1 wt.% Y 2O3 and W-4 wt.% SiC-5 wt.% Y2O3 were mechanically alloyed (MA'd) using a Spex mill for 24 h. MA'd composite powders were sintered under inert Ar and reducing H2 gas conditions at 1680 °C for 1 h. Microstructural and morphological characterizations of composite powders and sintered samples were carried out via SEM and XRD analyses. Furthermore, density measurements and hardness measurements of sintered samples were carried out. A highest Vickers microhardness value of 11.4 GPa was measured for the sintered W-4 wt.% SiC-5 wt.% Y2O 3 while W-4 wt.% SiC sample possessed the highest relative density value of 97.7%.

AB - In this study, the effect of Y2O3 additions on the microstructural and the physical properties of W-SiC composites was investigated. Powder blends of W-4 wt.% SiC, W-4 wt.% SiC-1 wt.% Y 2O3 and W-4 wt.% SiC-5 wt.% Y2O3 were mechanically alloyed (MA'd) using a Spex mill for 24 h. MA'd composite powders were sintered under inert Ar and reducing H2 gas conditions at 1680 °C for 1 h. Microstructural and morphological characterizations of composite powders and sintered samples were carried out via SEM and XRD analyses. Furthermore, density measurements and hardness measurements of sintered samples were carried out. A highest Vickers microhardness value of 11.4 GPa was measured for the sintered W-4 wt.% SiC-5 wt.% Y2O 3 while W-4 wt.% SiC sample possessed the highest relative density value of 97.7%.

KW - Mechanical alloying

KW - Microstructure

KW - Solid-state sintering

KW - W-SiC

KW - YO

UR - https://www.scopus.com/pages/publications/80955178339

U2 - 10.1016/j.ijrmhm.2011.04.013

DO - 10.1016/j.ijrmhm.2011.04.013

M3 - Article

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JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

IS - 6

ER -