摘要
以先驱体浸渍裂解(PIP)工艺制备了2DCf/SiC复合材料,研究了低温裂解工艺(裂解温度低于1000℃)对2DCf/SiC复合材料结构和性能的影响,为Cf/SiC复合材料的低温制备探索可行之路。研究表明,采用900℃裂解工艺制备的复合材料其力学性能达到或高于目前同类工艺制备的2DCf/SiC复合材料力学性能,其弯曲强度达到329.6MPa,剪切强度32.1MPa,断裂韧性14.7MPa·m1/2。并采用差热(TG-DTA)、红外光谱(IR)、X射线衍射(XRD)等对先驱体聚碳硅烷(PCS)及其低温裂解产物的结构和性能进行了研究。
2D Cf/SiC composites were prepared by precursor infiltration and pyrolysis （PIP）. The effect of low temperature pyrolysis process （lower than 1000℃） on the structure and properties of the materials was investigated, which would explore the possible way of preparing 2D Cf/SiC composites at low temperature. The result of bending test showed that the mechanical properties of 2D Cf/SiC composites prepared at 900℃ attained or exceeded those of the composites prepared at 1200℃, and their bending strength reached 329.6 MPa, shear strength 32.1 MPa, and fracture toughness 14.7 MPa·m^1/2. Furthermore, the microstructure and the properties of polycarbosilane （PCS） and its pyrolysate have been investigated by means of TG-DTA, IR and XRD.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第A01期659-663,共5页
Rare Metal Materials and Engineering
基金
二炮武器装备预研项目
关键词
2D
CF/SIC
先驱体浸渍裂解
低温裂解
复合材料
2D Cf/SiC
precursor infiltration and pyrolysis
low temperature pyrolysis
composites
