Characterization of C/C Composites Produced Using 3D-preforms by CVD/CVI Method for Biomedical Applications

Cemalettin Çamyurdu; Şahin Ateş; Kerim Emre Öksüz; Ayşe Şükran Demirkıran

Makale detayları

Characterization of C/C Composites Produced Using 3D-preforms by CVD/CVI Method for Biomedical Applications

Yazarlar:

Cemalettin Çamyurdu | Şahin Ateş | Kerim Emre Öksüz | Ayşe Şükran Demirkıran

Yayıncı:

Sakarya University

Ana Başlıklar:

Material Production Technologies | Materials Engineering (Other)

Dergi:

Sakarya University Journal of Science Vol.29 Issue 1, pp.39-49

Belge Tipi:

Makale

Yayın Tarihi:

2/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001341029

pISSN:

2147-835X

Anahtar kelimeler:

Özet:

 In this study, carboncarbon CC composite structures were produced by depositing a pyrolytic carbon matrix around carbon fibers found in a three-dimensional 3D preform using the Chemical Vapor Infiltration CVI method. The preforms used as starting materials were in orthogonal fiber geometry and 3D carbon fiber knitting structure. The CVI process performed in the CVD Chemical Vapor Deposition device was carried out at 1250 , under 2 mbar pressure, with a methane gas flow rate of 2.0 ltmin, for a total period of 312 hours gradually applied in an inert atmosphere consisting of argon and nitrogen gases. The produced block piece was processed to obtain small test samples; tensile and three-point bending tests were applied to the pieces, and their densities were measured. Samples were subjected to in-vitro biodegradation tests in 0.9  isotonic sodium chloride solution by weight at 37 C for a total of 21 days. The density and apparent porosity of the produced samples were measured to be 1.395 gcm³ and 13.424, respectively. The tensile strength and bending strength of the produced CC composites were determined to be 252.56.20 MPa and 236.625.7 MPa, respectively. At the end of 21 days, the biodegradation ratio of CC composites was calculated as 0.0095.

 In this study, carboncarbon CC composite structures were produced by depositing a pyrolytic carbon matrix around carbon fibers found in a three-dimensional 3D preform using the Chemical Vapor Infiltration CVI method. The preforms used as starting materials were in orthogonal fiber geometry and 3D carbon fiber knitting structure. The CVI process performed in the CVD Chemical Vapor Deposition device was carried out at 1250 , under 2 mbar pressure, with a methane gas flow rate of 2.0 ltmin, for a total period of 312 hours gradually applied in an inert atmosphere consisting of argon and nitrogen gases. The produced block piece was processed to obtain small test samples; tensile and three-point bending tests were applied to the pieces, and their densities were measured. Samples were subjected to in-vitro biodegradation tests in 0.9  isotonic sodium chloride solution by weight at 37 C for a total of 21 days. The density and apparent porosity of the produced samples were measured to be 1.395 gcm³ and 13.424, respectively. The tensile strength and bending strength of the produced CC composites were determined to be 252.56.20 MPa and 236.625.7 MPa, respectively. At the end of 21 days, the biodegradation ratio of CC composites was calculated as 0.0095.

 In this study, carboncarbon CC composite structures were produced by depositing a pyrolytic carbon matrix around carbon fibers found in a three-dimensional 3D preform using the Chemical Vapor Infiltration CVI method. The preforms used as starting materials were in orthogonal fiber geometry and 3D carbon fiber knitting structure. The CVI process performed in the CVD Chemical Vapor Deposition device was carried out at 1250 , under 2 mbar pressure, with a methane gas flow rate of 2.0 ltmin, for a total period of 312 hours gradually applied in an inert atmosphere consisting of argon and nitrogen gases. The produced block piece was processed to obtain small test samples; tensile and three-point bending tests were applied to the pieces, and their densities were measured. Samples were subjected to in-vitro biodegradation tests in 0.9  isotonic sodium chloride solution by weight at 37 C for a total of 21 days. The density and apparent porosity of the produced samples were measured to be 1.395 gcm³ and 13.424, respectively. The tensile strength and bending strength of the produced CC composites were determined to be 252.56.20 MPa and 236.625.7 MPa, respectively. At the end of 21 days, the biodegradation ratio of CC composites was calculated as 0.0095.

 Bu çalışmada, karbonkarbon CC kompozit yapılar, Kimyasal Buhar Sızdırma CVI yöntemi kullanılarak üç boyutlu 3D bir preformda bulunan karbon fiberlerin etrafına pirolitik bir karbon matrisin biriktirilmesiyle üretilmiştir. Başlangıç malzemesi olarak kullanılan preformlar ortogonal fiber geometrisinde ve 3D karbon fiber örgü yapısındaydı. CVD Kimyasal Buhar Biriktirme cihazında gerçekleştirilen CVI işlemi 1250 Cde, 2 mbar basınç altında, 2,0 ltdk metan gazı akış hızıyla, argon ve azot gazlarından oluşan inert atmosferde kademeli olarak toplam 312 saat süreyle uygulandı. Üretilen blok parça, küçük test numuneleri elde etmek için işlendi; parçalara çekme ve üç nokta eğme testleri uygulandı ve yoğunlukları ölçüldü. Örnekler, ağırlıkça 0,9 izotonik sodyum klorür çözeltisi içinde 37 Cde toplam 21 gün boyunca in-vitro biyolojik bozunma testlerine tabi tutulmuştur. Üretilen numunelerin yoğunluğu ve görünür gözenekliliği sırasıyla 1.395 gcm³ ve 13.424 olarak ölçülmüştür. Üretilen CC kompozitlerin çekme mukavemeti ve eğilme mukavemeti sırasıyla 252,56,20 MPa ve 236,625,7 MPa olarak belirlenmiştir. 21 günün sonunda CC kompozitlerin biyolojik bozunma oranı 0,0095 olarak hesaplanmıştır.

Makale detayları

Characterization of C/C Composites Produced Using 3D-preforms by CVD/CVI Method for Biomedical Applications

Yazarlar:

Cemalettin Çamyurdu | Şahin Ateş | Kerim Emre Öksüz | Ayşe Şükran Demirkıran

Yayıncı:

Sakarya University

Ana Başlıklar:

Material Production Technologies | Materials Engineering (Other)

Dergi:

Sakarya University Journal of Science Vol.29 Issue 1, pp.39-49

Belge Tipi:

Makale

Yayın Tarihi:

2/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001341029

pISSN:

2147-835X

Carbon/Carbon composites

3D Carbon fibers

Chemical vapor infiltration

Pyrolitic Carbon (PyC)

BiodegradationKarbon/Karbon kompozitler

3D Karbon fiberler

Kimyasal buhar infiltrasyonu

Pirolitik Karbon (PyC)

Biyodegradasyon

Sayı

Makale detayları

Yazarlar: Cemalettin Çamyurdu | Şahin Ateş | Kerim Emre Öksüz | Ayşe Şükran Demirkıran

Yayıncı: Sakarya University

Ana Başlıklar: Material Production Technologies | Materials Engineering (Other)

Dergi: Sakarya University Journal of Science Vol.29 Issue 1, pp.39-49

Belge Tipi: Makale

Yayın Tarihi: 2/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001341029

pISSN: 2147-835X

Sayı

Yazarlar:

Cemalettin Çamyurdu | Şahin Ateş | Kerim Emre Öksüz | Ayşe Şükran Demirkıran

Yayıncı:

Sakarya University

Ana Başlıklar:

Material Production Technologies | Materials Engineering (Other)

Dergi:

Sakarya University Journal of Science Vol.29 Issue 1, pp.39-49

Belge Tipi:

Makale

Yayın Tarihi:

2/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001341029

pISSN:

2147-835X