Self-propagating high-temperature synthesis (SHS) has been successfully developed for the fabrication of cellular NiTi intermetallic compounds, which have an open cellular structure with about 60 vol% porosity and more than 95% open-porosity ratio. The SHS reactions lead to the formation of TiNi, Ti2Ni, Ni3Ti, and Ni4Ti3 intermetallics. The SHS process can be controlled by regulating the preheating temperature, which has effects on the phase amount and the shape as well as macrodistribution of pores in the products.
自蔓延高温合成(SHS)已成功用于制造蜂窝状
镍钛金属间化合物,这种
金属间化合物具有开放的蜂窝状结构,孔隙率约为 60%,开放孔隙率超过 95%。SHS 反应可形成 TiNi、Ti2Ni、
Ni3Ti 和
Ni4Ti3 金属间化合物。SHS 过程可通过调节预热温度来控制,预热温度对产品中的相量、孔隙形状和宏观分布都有影响。