C／C复合材料抗烧蚀TaC涂层的制备

Preparation of Anti-ablation TaC Coating on C/C Composite Material

摘要:

报道1种制备C／C复合材料抗烧蚀TaC涂层的新技术。用红外光谱、XRD及SEM分析和表征醇基钽膜，用XRD和SEM分析和表征TaC涂层。制备出的醇基钽是非晶态结构，在C／C复合材料上将这种凝胶铺展形成致密的多层膜。在石墨化炉中多层膜被转化为TaC涂层。在1200℃时，形成的涂层中含有TaC和Ta2O5。高于1400℃时涂层中只有TaC存在。1600℃时所形成的涂层是1种连续致密的层状结构，1400℃时所形成的涂层是1种多微孔的网状结构。

Abstract:

A new technology for preparation of TaC coating on C/C composite material is reported. The ethylate tantalum film is characterized by FT-IR spectra, XRD and SEM, and the TaC coating is characterized by XRD and SEM. The amorphous ethylate tantalum jellied is prepared and is spreaded out densely on the surface of C/C composite material to form a multi-films. In the graphite furnace the multi-films is transformed into the TaC coatings at various temperatures. At 1 200C the coating contains TaC and Ta2O5,and at above 1 400C only TaC exists. The structure of the coating at 1 600C is a continuous dense stratum structure, and at 1 400C is a porous net structure.