欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以BCl3和C3H6分别作为低压化学气相沉积制备掺硼碳材料的硼源和碳源，采用热壁化学气相沉积炉，于1100℃在碳纤维基底上制备了掺硼碳薄膜。采用扫描电镜、X射线衍射和X射线光电子能谱对样品作了表征。结果表明：产物表面光滑，断面呈细密的片层状结构，产物由B4C和石墨化程度较高的热解碳组成。采用掺硼碳薄膜中含有15％（摩尔分数，下同）硼。硼原子化学键结合状态共有5种，分别是：B4C的中的B-C键，硼原子替代固溶在类石墨结构中形成的B-C键，BC2O和BCO2结构中B-C键和B-O键的混合态，以及B2O3中的B-O键。其中超过40％的硼原子以替代固溶的形式存在于热解碳的类石墨结构中。
英文摘要：
Boron doped carbon （BCx） thin film was prepared at 1 100 ℃ on carbon fiber substrate by low pressure chemical vapor deposition （LPCVD） from BCl3 and C3H6 as boron and carbon sources respectively. Scanning electron microscopy observation results show that the BCx coating has a smooth surface and the cross section of BCx coating exhibits a very fmely laminated structure. X-ray diffraction analysis results show that the BCx coating consists of B4C and pyrolytic carbon with a high degree of graphitization. X-ray photoelectron spectroscopy results show that there is 15% （in mole, the same below） boron induced in the BCx coating. Five different chemical surroundings of boron atoms were confirmed in the BCx coating, namely, BaC, boron atoms substituted in the graphite-like structures, and mixtures of B-C bonding and B-O bonding referred to as BC2O and BCO2, B2O3, respectively. More than 40 % of boron atoms are included by substitution in the graphitic-like structure.
同期刊论文项目
同项目期刊论文
Nondestructive evaluation and mechanical characterization of a defect-embedded ceramic matrix compos
Behavior of two-dimensional C/SiC composites subjected to thermal cycling in controlled environments
The Acoustic Emission Characteristics of Silicon Carbide Firber Reinforced composite Under Tensile L
Acoustic Emission Research on Thermal Shock Behaviors of Three-Dimensional C/SiC Composites in Diffe
Damage analysis of 2D C/SiC composites subjected to thermal cycling in oxidizing environments by mec
Thermal expansion behavior of carbon fiber reinforced chemical-vapor-infiltrated silicon carbide com
Thermal cycling response behavior of ceramic matrix composites under load and displacement constrain
Damage mechanisms of C/SiC composites subjected to constant load and thermal cycling in oxidizing at
Effect of shrinkage constraint on damage of C/SiC composites during thermal cycles in oxidising atmo
Numerical Simulation of Effect of Methyltrichlorosilane Flux on Isothermal Chemical Vapor Infiltrati
Thermal cycling damage mechanisms of C/SiC composites in displacement constraint and oxidizing atmos
Comparative Modeling of Gas Transport in Isothermal Chemical Vapor Infiltration Process of C/SiC Com
Modeling the effects of thermal and mechanical load cycling on a C/SiC composite in oxygen/argon mix
Relationship of damage evolution of ceramic matrix composites between static and dynamic oxidizing g
Residual strength prediction of SiC/SiC composite exposed to service environments with factor analys
Monotonic tensile behavior analysis of three-dimentional needle-punched Wover C/SiC Composites by Ac
Life Prediction of 3D woven C/SiC Composites at High Temperatures with Low Frequency Cyclic Stresses
Experimental research on failure mechanism of a CVI-fabricated ceramic matrix composite under compre
Tension-tension fatigue damage characteristics of a 3D SiC/SiC composite in H2O-O2-Ar environment at
Oxidation protective multilayer CVD SiC coatings modified by a graphitic B-C interlayer for 3D C/SiC
Characterization of tensile behavior of a two-dimensional woven carbon/silicon carbide composite fab
Stress-Oxidationbehavior of a carbon/silicon carbide composite in a high temperature combustion envi
Tensile behavior and microstructural evolution of a carbon/silicon carbide composite in simulated re
Effect of temperature gradients and stress levels on damage of C/SiC composites in oxidizing atmosph
Experimental simulation of the space re-entry environment for a carbon/silicon carbide composite and
期刊信息
位置：