کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5440341 1398227 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and properties of in-situ mullite whiskers reinforced aluminum chromium phosphate wave-transparent ceramics
ترجمه فارسی عنوان
آماده سازی و خواص موزاییک در محل موزاییک تقویت شده آلومینیوم کروم فسفات سرامیک شفاف
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
In-situ mullite whisker reinforced aluminum chromium phosphate wave-transparent ceramics were designed and prepared. The phase transformation, microstructure, mechanical and electrical properties of the ceramics were investigated, and the mechanisms of in-situ growth and toughening were discussed. Results indicated that the in-situ growth of mullite whisker significantly improved the mechanical properties of the matrix, especially the high temperature flexural strength. The room temperature flexural strength, 1000 °C flexural strength and fracture toughness of the ceramics were 135.60 MPa, 121.71 MPa and 4.52 MPa m1/2. After sintering at 1500 °C, the optimum properties of ε'r, tanδ and microwave transmittance at region 8-12 GHz were <3.6, <0.03 and>80%, respectively. The sinterability of ACP matrix was improved by the in-situ process of high mullization above 1450 °C. Using ACP binder as the raw material can avoid the phase transformation from B-AlPO4 to T-AlPO4. The synthesized mullite whiskers played a role in toughening by whiskers fracture, crack deflection and whisker pulling out.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 37, Issue 15, December 2017, Pages 4793-4799
نویسندگان
, , , , ,