Yenilikçi Biyoaktif Zirkonya Cam Seramikleri: Radyasyon Koruması ve Biyouyumluluğun Birleşimi

Year 2025, Volume: 29 Issue: 2, 366 - 374, 25.08.2025

Özge Kılıçoğlu

https://doi.org/10.19113/sdufenbed.1691010

Abstract

Bu çalışma, Mishra ve ark. (2024) tarafından gerçekleştirilen ilk sentez ve karakterizasyon çalışmalarını genişleterek, SiO₂–Na₂O–CaO–P₂O₅ sistemine dayalı zirkonya katkılı şeffaf cam seramikleri (TGC) potansiyel radyasyon zırhalama malzemeleri olarak incelemektedir. Araştırma, kalsiyum oksitin (CaO) zirkonyum dioksit (ZrO₂) ile mol %0’dan mol %6’ya kadar artan oranlarda ardışık olarak ikame edilmesinin etkilerini değerlendirir. Çalışmamız, ZrO₂ katkılamasının özellikle yoğunluk ve yapısal sıkılık gibi kritik radyasyon zayıflatma parametrelerini nasıl etkilediğini irdeleyerek önceki bulguları derinleştirmektedir. Bu zirkonya katkılı TGC’lerin kütle zayıflatma katsayıları (MAC), 0,015 MeV ile 15 MeV arasındaki foton enerjisi aralığında Phy-X/PSD yazılımı ve PHITS 3.22 Monte Carlo simülasyon kodu kullanılarak belirlenmiştir. Elde edilen simülasyon sonuçları ile teorik öngörüler arasında güçlü bir uyum tespit edilmiştir. Buna dayanarak yarı değer tabakası (HVL), onda bir değer tabakası (TVL), doğrusal zayıflatma katsayısı (LAC), efektif atom numarası (Z_eff), ortalama serbest yol (MFP) ve elektron yoğunluğu (N_eff) gibi kritik koruyucu parametreler Phy-X/PSD aracılığıyla hesaplanan kütle zayıflatma katsayıları kullanılarak değerlendirilmiştir. Bulgular, MAC ve LAC, Z_eff ve N_eff değerlerinin foton enerjisindeki artışla birlikte azaldığını, buna karşın MFP, HVL ve TVL değerlerinin foton enerjisi arttıkça yükseldiğini ortaya koymuştur.Sonuçlar, artan ZrO₂ derişimiyle birlikte malzeme yoğunluğunun arttığını, molar hacmin azaldığını ve yapısal sıkılığın iyileştiğini; tüm bunların da daha iyi radyasyon kalkanlama yeteneğine katkı sağladığını göstermektedir. Zirkonya (ZrO₂) katkılı şeffaf cam seramikler gamma ışınlarına karşı geliştirilmiş zayıflatma performansı sergilemekte olup, test edilen örnekler arasında BG4 kodlu cam seramik en yüksek koruyuculuk etkinliğini sunmuştur.

Keywords

Zirkonya , Cam Seramikler , Radyasyon Zayıflatma , Biyouyumluluk

Innovative Bioactive Zirconia Glass Ceramics: Combining Radiation Protection and Biocompatibility

Abstract

Abstract: This study examines zirconia-doped transparent glass ceramics (TGCs) based on the SiO₂–Na₂O–CaO–P₂O₅ system as potential radiation shielding materials, expanding on the initial synthesis and characterization by Mishra et al. (2024). The research specifically investigates the effects of incrementally substituting calcium oxide (CaO) with zirconium dioxide (ZrO₂) in concentrations from 0 to 6 mol%. Our work builds upon prior research by evaluating how ZrO₂ doping influences crucial radiation attenuation parameters, particularly density and structural compactness. The mass attenuation coefficients of these zirconia-doped TGCs were determined by utilizing Phy-X/PSD software and the PHITS 3.22 Monte Carlo simulation code across a photon energy range of 0.015 MeV to 15 MeV. A strong alignment was detected between the simulated results and theoretical predictions. Critical shielding parameters—including the half-value layer (HVL), tenth-value layer (TVL), linear attenuation coefficient (LAC), effective atomic number (Zeff), mean free path (MFP), and electron density (Neff)—were consequently evaluated via Phy-X/PSD software, relying on the calculated mass attenuation coefficients. The findings demonstrated that the MAC and LAC, Zeff, and Neff presented a decline in correlation with a rise in photon energy, while MFP, HVL and TVL have increased alongside the rise in photon energy. The findings demonstrate a direct relationship between increased ZrO₂ concentration and enhanced material density, reduced molar volume, and improved structural compactness, all of which contribute to better radiation shielding capabilities. Zirconia (ZrO₂)-doped transparent glass ceramics (TGCs) exhibit improved gamma-ray shielding performance, with the BG4-labeled glass ceramic displaying the highest shielding efficiency among the samples tested.

Keywords

Zirconia , Glass Ceramics , Radiation Attenuation , Biocompatibility

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