Production of Si3N4/SiC Composite Powder by Dynamic Thermochemical Method

Betül Arslan; Nazlı Erken; Nuray Canıkoğlu

Makale detayları

Production of Si3N4/SiC Composite Powder by Dynamic Thermochemical Method

Yazarlar:

Betül Arslan | Nazlı Erken | Nuray Canıkoğlu

Yayıncı:

Afyon Kocatepe University

Ana Başlıklar:

Malzeme Mühendisliğinde Seramik

Dergi:

Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi Vol.23 Issue 4, pp.1010-1018

Belge Tipi:

Makale

Yayın Tarihi:

8/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001297543

pISSN:

2149-3367

Anahtar kelimeler:

Özet:

 In this study, silicon nitridesilicon carbide Si3N4SiC composite powder was synthesised via the reaction of silicon oxide and carbon in nitrogen and argon atmospheres by 2-step dynamic thermochemical method. For this purpose, different recipes were prepared and studies were carried out on nitriding and carburizing temperatures 1400, 1450 and 1500C and processing time 1 and 2 hours. First of all, different recipes were examined thermodynamically with the help of FactSage program. After determining the suitable recipes, raw material mixtures were prepared using SiO2 and carbon black with a CSiO2 ratio of 2.25 and 3. After the thermochemical processes applied to the granules obtained from the powder mixtures, the optimum result for the production of composite powder was obtained by nitriding in N2 atmosphere for 2 hours at 1450C and carburizing in Ar atmosphere for 1 hour at 1450C at a rotational speed of 4 rpm. Microstructure and phase investigations of the produced powders were carried out by SEM-EDS and XRD methods.

 In this study, silicon nitridesilicon carbide Si3N4SiC composite powder was synthesised via the reaction of silicon oxide and carbon in nitrogen and argon atmospheres by 2-step dynamic thermochemical method. For this purpose, different recipes were prepared and studies were carried out on nitriding and carburizing temperatures 1400, 1450 and 1500C and processing time 1 and 2 hours. First of all, different recipes were examined thermodynamically with the help of FactSage program. After determining the suitable recipes, raw material mixtures were prepared using SiO2 and carbon black with a CSiO2 ratio of 2.25 and 3. After the thermochemical processes applied to the granules obtained from the powder mixtures, the optimum result for the production of composite powder was obtained by nitriding in N2 atmosphere for 2 hours at 1450C and carburizing in Ar atmosphere for 1 hour at 1450C at a rotational speed of 4 rpm. Microstructure and phase investigations of the produced powders were carried out by SEM-EDS and XRD methods.

 In this study, silicon nitridesilicon carbide Si3N4SiC composite powder was synthesised via the reaction of silicon oxide and carbon in nitrogen and argon atmospheres by 2-step dynamic thermochemical method. For this purpose, different recipes were prepared and studies were carried out on nitriding and carburizing temperatures 1400, 1450 and 1500C and processing time 1 and 2 hours. First of all, different recipes were examined thermodynamically with the help of FactSage program. After determining the suitable recipes, raw material mixtures were prepared using SiO2 and carbon black with a CSiO2 ratio of 2.25 and 3. After the thermochemical processes applied to the granules obtained from the powder mixtures, the optimum result for the production of composite powder was obtained by nitriding in N2 atmosphere for 2 hours at 1450C and carburizing in Ar atmosphere for 1 hour at 1450C at a rotational speed of 4 rpm. Microstructure and phase investigations of the produced powders were carried out by SEM-EDS and XRD methods.

 Bu çalışmada, silisyum nitrürsilisyum karbür Si3N4SiC kompozit tozu, 2 adımlı dinamik termokimyasal yöntem ile azot ve argon atmosferlerinde silisyum oksit ve karbonun reaksiyonuyla sentezlenmiştir. Bu amaçla farklı reçeteler hazırlanmış olup nitrürlenme ve karbürlenme sıcaklıkları 1400, 1450 ve 1500C ile işlem süresi 1 ve 2 saat üzerine çalışmalar yapılmıştır. Öncelikle farklı reçeteler FactSage programı yardımıyla termodinamik olarak incelenmiştir. Uygun olabilecek reçeteler belirlendikten sonra hammadde karışımları, SiO2 ve karbon siyahı kullanılarak CSiO2 oranı 2.25 ve 3 olacak şekilde hazırlanmıştır. Toz karışımlarından elde edilen granüllere uygulanan termokimyasal işlemler sonrasında kompozit toz üretimi için en optimum sonuç, 1450Cde 2 saat N2 atmosferinde nitrürleme ve 1450Cde 1 saat Ar atmosferinde karbürleme işlemleriyle 4 rpm dönme hızında sağlanmıştır. Üretilen tozların mikroyapı ve faz incelemeleri SEM-EDS ve XRD yöntemleriyle gerçekleştirilmiştir.

Makale detayları

Production of Si3N4/SiC Composite Powder by Dynamic Thermochemical Method

Yazarlar:

Betül Arslan | Nazlı Erken | Nuray Canıkoğlu

Yayıncı:

Afyon Kocatepe University

Ana Başlıklar:

Malzeme Mühendisliğinde Seramik

Dergi:

Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi Vol.23 Issue 4, pp.1010-1018

Belge Tipi:

Makale

Yayın Tarihi:

8/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001297543

pISSN:

2149-3367

silicon nitride

silicon carbide

composite powder

dynamic thermochemical method

FactSagesilisyum nitrür

silisyum karbür

kompozit toz

dinamik termokimyasal yöntem

FactSage

Sayı

Makale detayları

Yazarlar: Betül Arslan | Nazlı Erken | Nuray Canıkoğlu

Yayıncı: Afyon Kocatepe University

Ana Başlıklar: Malzeme Mühendisliğinde Seramik

Dergi: Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi Vol.23 Issue 4, pp.1010-1018

Belge Tipi: Makale

Yayın Tarihi: 8/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001297543

pISSN: 2149-3367

Sayı

Yazarlar:

Betül Arslan | Nazlı Erken | Nuray Canıkoğlu

Yayıncı:

Afyon Kocatepe University

Ana Başlıklar:

Malzeme Mühendisliğinde Seramik

Dergi:

Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi Vol.23 Issue 4, pp.1010-1018

Belge Tipi:

Makale

Yayın Tarihi:

8/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001297543

pISSN:

2149-3367