نوع مقاله : علمی و پژوهشی
نویسندگان
1 گروه مهندسی متالورژی و مواد، دانشکده مهندسی، دانشگاه فردوسی مشهد.
2 گروه مهندسی متالورژی و مواد، دانشکده مهندسی، دانشگاه فردوسی مشهد،
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The effect of different amounts of ZnO on structural properties of SiO2-Al2O3-p < sub>2O5-CaF2-CaO-K2O-Na2O-xZnOglasses was studied. The effect of ZnO addition on glass transition and crystallization temperatures were studied by DTA. FTIR and RAMAN were used to study the characteristic bands of prepared glasses. All samples were heat treated at two different temperatures of 750 and 1100°C. XRD analysis showed that anorthite and calciumphosphate were the main crystalline phases. Based on DTA and XRD results, samples with higher amounts of ZnO were crystallized at higher temperatures. No significant band changes were detected as a result of ZnOaddition as spectroscopic results showed. Vickers microhardness numbers showed that ZnO addition up to 2gr lead to a significant (p < 0.05) improvement in microhardness values.
کلیدواژهها [English]
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