کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9777949 | 1510152 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spray winding, a novel one-step spray-technology to perform CMCs from preceramic polymers
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The applied metalorganic polymer as a commercial polysiloxane precursors which can be easily handled in air. The use of an organic solvent and WC-filler particles enables a low viscous suspension. Carbon fibres were wound onto a rotating tapered mandrel and simultaneously spray-coated with the polymer suspension, i.e. fibre winding and matrix spraying occurred at the same time to build up the CMC tube layer by layer. A heatable two flux nozzle is positioned perpendicular over the rotating mandrel and coats the surface continuously. An ellipsoid IR-mirror furnace which cures and pyrolyses the matrix (up to about 900 °C) was in 180° orientation displaced, focusing its radiation onto the surface. Rotation and traverse speed of the mandrel were computer controlled to facilitate a variability in fibre architecture. In a circular ring-test small winding angles leads to a maximum strength of 45 MPa. Because the shrinkage of the matrix polymer occur at a free surface only very limited strain hindrance arises.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 25, Issues 2â3, 2005, Pages 181-185
Journal: Journal of the European Ceramic Society - Volume 25, Issues 2â3, 2005, Pages 181-185
نویسندگان
O. Goerke, E. Feike, H. Schubert,