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采用电场激活压力辅助合成技术(FAPAS)并结合原位反应的方法制备TiB2-TiC-Ni/TiAl/Ti功能梯度材料,研究了TiB2-TiC-Ni/TiAl/Ti功能梯度材料的界面微结构特征及其结合强度,分析了梯度材料界面的微观组织和元素分布,并分析了试样的抗剪切强度和显微硬度。研究表明:制备的TiB2-TiC-Ni/TiAl/Ti功能梯度材料组织致密,TiB2-TiC复合陶瓷晶粒细小且均匀分布;各层界面区形成了良好的扩散冶金结合,连接区剪切强度达85.878 MPa。显微硬度由钛板到陶瓷层呈梯度变化,表层最大显微硬度达HV2760。
TiB2-TiC-Ni / TiAl / Ti functional graded materials were prepared by electric field activated pressure assisted synthesis (FAPAS) combined with in-situ reaction and the interfacial microstructure characteristics of TiB2-TiC-Ni / TiAl / Ti functional graded materials And their bonding strength, the microstructure and elemental distribution of the interface of the gradient material were analyzed. The shear strength and microhardness of the sample were also analyzed. The results show that the prepared TiB2-TiC-Ni / TiAl / Ti functional graded material has compact microstructure and fine and uniform distribution of the grain size of the TiB2-TiC composite ceramics. The interfacial region of the layers forms a good diffusion metallurgical bond and the shear strength 85.878 MPa. Microhardness gradient from the titanium plate to the ceramic layer, the maximum surface microhardness HV2760.