论文部分内容阅读
研究了自蔓延高温合成工艺制备ＴｉＮｉ合金均匀多孔体－－人造骨材料的可能性。通过对工艺参数的优化，制备出整体均匀的钛镍合金多孔体，从而证明了应自蔓延工艺制备ＴｉＮｉ合金多孔体的可能性。结果还表明，预热温度在４００℃左右时，孔隙率达到最大值７０％。应ＳＥＭ观察分析了孔洞内壁形貌，并结合热力学计算和理论分析，提出应用自蔓延工艺制备钛镍合金均匀多孔体的工艺条件。同时我们应用Ｘ－ｒａｙ衍射、ＳＥＭ扫描分析了产物相组成，除了ＴｉＮｉ母相外，尚有少量的树技状或块状的Ｔｉ２Ｎｉ、Ｎｉ３Ｔｉ存在。
The possibility of preparing homogeneous porous TiNi alloy-artificial bone material by SHS process was studied. Through the optimization of the process parameters, a uniform titanium-nickel alloy porous body was prepared, which proves the possibility of preparing the porous TiNi alloy body by the self-propagating process. The results also show that when the preheating temperature is about 400 ℃, the porosity reaches the maximum of 70%. The morphologies of the inner walls of the pores were observed and analyzed by SEM. Based on the thermodynamic calculation and theoretical analysis, the technological conditions for preparing the uniform porous Ti-Ni alloy by self-propagating technology were proposed. At the same time, we used X-ray diffraction and SEM scanning to analyze the phase composition of the products. In addition to the TiNi parent phase, there are still a few tree-like or massive Ti2Ni and Ni3Ti species present.