کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8948474 | 1645668 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and cytotoxicity of Al2O3-ZrO2 eutectic bioceramics with high mechanical properties prepared by laser floating zone melting
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Developing new generation of strong, tough and stable bioceramics used in dental filed has been highly desired for attaining the clinical requirement of secure and reliable therapy. In this paper, a novel Al2O3-ZrO2 eutectic bioceramics with nearly fully density and extremely aesthetic luster was in-situ prepared by innovative laser floating zone melting (LFZM) method. The influence of solidification rates on microstructure evolution, mechanical properties and cytotoxicity was investigated. The eutectic bioceramics displayed a special three dimensional interpenetrating microstructure evolving with increasing the solidification rate. The eutectic colony structure occurred when solidification rate overpassed 8â¯Âµm/s, and lamellar spacing was below 1â¯Âµm when solidification rate exceeded 30â¯Âµm/s. The eutectic bioceramics solidified at 100â¯Âµm/s exhibited optimal mechanical properties with an average hardness of 16.53â¯GPa, fracture toughness of 6.5â¯MPaâ¯m1/2 and flexural strength of 1.37â¯GPa. The cytotoxicity of Al2O3-ZrO2 eutectic bioceramics was evaluated by MTT methods according to ISO 10993-5 standard. Non-cytotoxic behavior was detected for the eutectic bioceramics, indicating this eutectic bioceramic could be used as promising dental restoration material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 15, 15 October 2018, Pages 17978-17985
Journal: Ceramics International - Volume 44, Issue 15, 15 October 2018, Pages 17978-17985
نویسندگان
Guangrao Fan, Haijun Su, Jun Zhang, Min Guo, Hui Yang, Haifang Liu, Enyuan Wang, Lin Liu, Hengzhi Fu,