کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1464939 | 989675 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Mechanical properties of Al4SiC4 bulk ceramics produced by solid state reaction Mechanical properties of Al4SiC4 bulk ceramics produced by solid state reaction](/preview/png/1464939.png)
The mechanical properties at ambient and high temperature of Al4SiC4 bulk ceramics prepared by solid state reaction were investigated. By increasing the sintering temperature slightly, the room temperature bending strength increased up to 318 MPa, whereas, the fracture toughness decreased with the increase of the sintering temperatures. The high temperature bending strengths of the Al4SiC4 ceramics exhibited anomalous increases within certain temperature ranges especially at 1300 °C in air with the highest value of 449.7 MPa, i.e. about 1.5 times of that at room temperature (300 MPa). The self-healing behavior of the flaws on the specimen surface due to the oxidation of the surface layer of the Al4SiC4 ceramics is considered to be the main strength-enhancing mechanism at high temperatures.
Journal: Ceramics International - Volume 33, Issue 3, April 2007, Pages 453–458