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Browsing Metalurji ve Malzeme Mühendisliği / Metallurgy and Materials Engineering by Author

Browsing Metalurji ve Malzeme Mühendisliği / Metallurgy and Materials Engineering by Author "İpek, Mediha"

Now showing items 21-39 of 39

Kinetics of borided 31CrMoV9 and 34CrAlNi7 steels

Çelebi Efe, Gözde Fatma; İpek, Mediha; Özbek, İbrahim; Bindal, Cuma (ELSEVIER SCIENCE INC, 2008)

In this study, kinetics of borides formed on the surface of 31CrMoV9 and 34CrAlNi7 steels borided in solid medium consisting of Ekabor II at 850-900-950 degrees C for 2, 4, 6 and 8 h were investigated. Scanning electron ...
Low temperature aluminising of Inconel 718 alloy by pack cementation(ICCESEN 2017)

Yener, Tuba; Gozde C. Efe; İpek, Mediha; Zeytin, Sakin (NATL INST SCIENCE COMMUNICATION-NISCAIR, 2019)

A novel pack-aluminizing diffusion coating has been conducted on -Inconel 718 alloy at 600 and 650 degrees C for 2 and 4 h. The aluminising powder packs have been prepared using Al powder as a source for depositing aluminium, ...
MECHANICAL CHARACTERIZATIONS AND ELECTROMAGNETIC WAVE SHIELDING PROPERTIES OF METALLIC NI PARTICULATED Al2O3 CERAMIC MATRIX COMPOSITES

Yener, Tuba; Yener, Şuayb Çağrı; İpek, Mediha; Gozde F. Efe Celebi; Altınsoy, İbrahim; Zeytin, Sakin; Bindal, Cuma (TANGER LTD, 2017)

The present paper describes producing alumina ceramic matrix composites reinforced with nickel at ratios of 1 % to 7 % by weight and their resultant mechanical and electromagnetic properties. In this study powder metallurgy ...
PRODUCTION OF Fe-Co-Cr-Ni-Al HEAS VIA ECAS AND EFFECTS OF HEAT TREATMENT ON SINTERED ALLOY MICROSTRUCTURE

İpek, Mediha; Yener, Tuba; Zeytin, Sakin (TANGER LTD, 2017)

In this study, it was investigated fabrication of high entropy alloy containing 25 wt.% Fe, 25 wt.% Co, 25 wt.% Cr, 15 wt.% Ni, 10 wt.% Al via Electric Current Activated (Assisted) Sintering (ECAS) process and effect of ...
Properties and behavior of self-compacting concrete produced with GBFS and FA additives subjected to high temperatures

Uysal, Mücteba; Yılmaz, Kemalettin; İpek, Metin; Uysal, Mehmet; İpek, Mediha (ELSEVIER SCI LTD, 2012)

This paper presents an experimental investigation on the performance of self-compacting concrete (SCC) subjected to high temperatures. For this purpose, Portland cement was replaced with fly ash (FA) and granulated blast ...
Rapid Synthesis of Metallic Reinforced in Situ Intermetallic Composites in Ti-Al-Nb System via Resistive Sintering

İpek, Mediha; Yener, Tuba; Çelebi Efe, Gözde Fatma; Altınsoy, İbrahim; Bindal, Cuma; Zeytin, Sakin (DE GRUYTER POLAND SP ZOO, 2018)

Intermetallics are known as a group of materials that draws attention with their features such as ordered structure, high temperature resistance, high hardness and low density. In this paper, it is aimed to obtain intermetallic ...
Rapid Synthesis of Metallic Reinforced in Situ Intermetallic Composites in Ti-Al-Nb System via Resistive Sintering

İpek, Mediha; Yener, Tuba; Çelebi Efe, Gözde Fatma; Altınsoy, İbrahim; Bindal, Cuma; Zeytin, Sakin (DE GRUYTER POLAND SP ZOO, 2018)

Intermetallics are known as a group of materials that draws attention with their features such as ordered structure, high temperature resistance, high hardness and low density. In this paper, it is aimed to obtain intermetallic ...
Some properties of Cu-SiC composites produced by powder metallurgy method

Çelebi Efe, Gözde Fatma; Altınsoy, İbrahim; İpek, Mediha; Zeytin, Sakin; Bindal, Cuma (REDAKCIA KOVOVE MATERIALY, 2011)

This study reports some properties of copper matrix composite reinforced with silicon carbide at ratios of 1, 2, 3 and 5 % by weight manufactured by powder metallurgy method. Composite powders were pressed by applying a ...
The characterization of borided pure tungsten

Özbek, İbrahim; İpek, Mediha; Bindal, Cuma (ELSEVIER SCIENCE SA, 2005)

This study reports on mechanical properties of borided pure tungsten. Boronizing heat treatment was performed in a solid medium consisting of Ekabor powders at 940 degrees C for 2, 4, and 8 h. The presence of WB on the ...
The Effect of Bond Coat on Mechanical Properties of Plasma-Sprayed Al2O3 and Al2O3 – 13 wt. % TiO2 Coatings on AISI 316L Stainless Steel

Yılmaz, Şenol; Çelebi Efe, Gözde Fatma; Bindal, Cuma; İpek, Mediha (2005)
The effect of bond coat on mechanical properties of plasma-sprayed Al2O3 and Al2O3-13 wt% TiO2 coatings on AISI 316L stainless steel

Yılmaz, Şenol; İpek, Mediha; Çelebi Efe, Gözde Fatma; Bindal, Cuma (PERGAMON-ELSEVIER SCIENCE LTD, 2005)

In this study, Al2O3 and Al2O3-13 wt% TiO2 were plasma sprayed onto AISI 316L stainless-steel substrate with and without Ni-5 wt% Al as bond coat layer. The coated specimens were characterized by optical microscopy, ...
The effect of mineral admixtures on mechanical properties, chloride ion permeability and impermeability of self-compacting concrete

Uysal, Mücteba; Yılmaz, Kemalettin; İpek, Metin; Uysal, Mehmet; İpek, Mediha (ELSEVIER SCI LTD, 2012)

The objective of this study was to evaluate the effectiveness of various mineral admixtures in producing self-compacting concrete (SCC). For this purpose, fly ash (FA), granulated blast furnace slag (GBFS), limestone powder ...
The effect of pre-setting pressure applied flexural strength and fracture toughness of reactive powder concrete during the setting phase

İpek, Metin; Yılmaz, Kemalettin; Uysal, Mücteba; İpek, Mediha (ELSEVIER SCI LTD, 2012)

In this study, the effect of pre-setting pressure on reactive powder concrete (RPC) was examined. The fresh (plastic) concrete samples were filled in a specified beam mould and six different pre-setting pressure values ...
The effect of reduction of graphene oxide on the formation of hydroxyapatite and tricalcium phosphate

Türk, Serbülent; Altınsoy, İbrahim; Çelebi Efe, Gözde Fatma; İpek, Mediha; Özacar, Mahmut; Bindal, Cuma (PERGAMON-ELSEVIER SCIENCE LTD, 2018)

This study reports on biomimetic mineralization route employing reduced graphene oxide (RGO) at different rates as a template material for biomineralization of biphasic hydroxyapatite/tricalcium phosphate (HAP/TCP). ...
The effect of reduction of graphene oxide on the formation of hydroxyapatite and tricalcium phosphate

Türk, Serbülent; Altınsoy, İbrahim; Çelebi Efe, Gözde Fatma; İpek, Mediha; Özacar, Mahmut; Bindal, Cuma (PERGAMON-ELSEVIER SCIENCE LTD, 2018)

This study reports on biomimetic mineralization route employing reduced graphene oxide (RGO) at different rates as a template material for biomineralization of biphasic hydroxyapatite/tricalcium phosphate (HAP/TCP). ...
The effect of sintering temperature on some properties of Cu-SiC composite

Çelebi Efe, Gözde Fatma; Yener, Tuba; Altınsoy, İbrahim; İpek, Mediha; Zeytin, Sakin; Bindal, Cuma (ELSEVIER SCIENCE SA, 2011)

Copper matrix composites reinforced with 1 wt.%, 2 wt.%, 3 wt.% and 5 wt.% SiC particles were fabricated by powder metallurgy method. Cu and Cu-SiC powder mixtures were compacted with a compressive force of 280MPa and ...
The Mechanical Properties and Wear Resistance of HVOF Sprayed WC-Co Coatings

Yaralı Özbek, Yıldız; Canikoğlu, Nuray; İpek, Mediha (POLISH ACAD SCIENCES INST PHYSICS, 2016)

In this work, the Woka 5810 powders (88% tungsten carbide-12% cobalt) were used to produce coating by high velocity oxy-fuel spraying. WC-Co is widely used as a tribological coating material providing a combination of high ...
The Surface Properties of WC-Co-Cr Based Coatings Deposited by High Velocity Oxygen Fuel Spraying

Yaralı Özbek, Yıldız; Canikoğlu, Nuray; İpek, Mediha (POLISH ACAD SCIENCES INST PHYSICS, 2017)

The aim of this research was to investigate microstructural and mechanical properties of the WC-Co-Cr coatings by high velocity oxygen fuel spraying. Woka 3653 (WC10Co4Cr) powder was used as coating material. This powder ...
Transformation kinetics of theta- to alpha-phase of alumina powders prepared from different alumina salts by chemical processing

İpek, Mediha; Toplan, Nil; Toplan, Hüseyin Özkan (SPRINGER, 2016)

The aim of this study was to produce nanosized alumina powders from two different aluminum salts (AlCl3 and AlNO3.9H(2)O) by precipitation method and to investigate transformation kinetics of alpha-Al2O3 crystallization ...