with coating layr of multi-phase

我国宫城工业大学实验室提出了一种新型的粉末冶金法制备功能梯度材料的方法。采用粉末工艺过滤效应和金属/陶瓷复合颗粒复合效应相结合的工艺制备了在整个横截面上没有明显裂纹状不连续的SUS316L/3Y-PSZ功能梯度材料。采用平均粒径为5mum的雾化SUS316L粉末和平均粒径为0.3mum的3Y-PSZ粉末作为原料粉末。将不同频率的振动添加到金属和陶瓷的粉末层（10级地层）以及不同涂层厚度的复合颗粒中。然后用热压机在高纯氩气中烧结粉末层。在烧结温度冷却过程中，在热负荷试验和热冲击试验中，在功能梯度材料的烧结压块中没有明显的裂纹样不连续。

A Novel powder metullugical fabrication of a Functionaly Gradient Material was proposed by our laboratory of miyagi national college of technology.The Functionaly Gradient Materials of SUS316L/3Y-PSZ without a visible clack-like discontinuity throughout an overall cross-section were produced by a combining process with a powder technological filter effect and a compound effect of metal/ceramics composite particles.Atomized SUS316L powder of mean particle diameter in 5mum and 3Y-PSZ of mean particle diameter in 0.3mum were used raw material powders. Vibrations of various frequency were made an addition to respective powder beds (a 10 steps stratum) of metal and ceramics and the composite particles of different coating thickness. After that the powder beds were sintered by hot press in high purity Ar gas.The crack-like discontinuity during cooling from sintering temperature and in a thermal loading tests and a thermal shock test could not been discernible in the sintered compacts of the Functionaly Gradient Material.