کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
815266 906323 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Studies on Interface of SiCf/Ti55 Composite
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک مواد
پیش نمایش صفحه اول مقاله
Studies on Interface of SiCf/Ti55 Composite
چکیده انگلیسی

The SiC fiber reinforced Ti55 composite (SiCf/Ti55) was fabricated by Fiber Coating Method (FCM) and Hot Isostatic Pressing (HIP). After the composites were thermally exposed in vacuum under different conditions, the study on the order of interfacial reaction products and the kinetics of interfacial reaction was performed. The results show that only C, Ti and Si elements take part in the interfacial reaction. The order of interfacial reaction products of SiCf/Ti55 composite exposed at 1000 °C can be identified as SiC | Ti3SiC2 | Ti5Si3+TiC | TiC | Ti55. However, the Ti3SiC2 does not exist in the composites exposed at low temperature. The interfacial reaction layer growth is controlled by diffusion and follows a role of parabolic rate, and the activation energy Qk and the pre-exponential factor k0 of SiCf/Ti55 composite are 198.16 kJ·mol−1 and 1.79×10−3 m·s−1/2, respectively. Compared with the SiCf/Ti composite and SiCf/Ti2AlNb composite, there is an interface with higher stability in SiCf/Ti55 composite. However, the interfacial reaction between SiC fiber and matrix takes place easier in SiCf/Ti55 composite than in the SiCf/Ti600 composite and SCS-6 SiCf/super a2 composite.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rare Metal Materials and Engineering - Volume 38, Issue 10, October 2009, Pages 1703-1706