Development of Metal/Ceramics Composite Particles by Mechanofusion Process and Application for Functional Gradient Materials

SUS/PSZ复合颗粒通过机械熔合方法生产，该方法是机械结合一种以上材料的方法之一。观察了它们的烧结组织特征。以SUS 316L不锈钢为核心颗粒，以部分稳定化的3 Y-PSZ为包覆颗粒。该技术被证明容易制造颗粒均匀分散的聚集体，即使在烧结状态下也能保持这种均匀分散而不管其它处理，并且制造具有优异的异质界面接合性能的烧结体。该技术利用加工过程中的强压缩力和发热，促进形成涂层的粉末的熔化，并产生其芯颗粒和涂层牢固熔合的复合颗粒。通过控制处理时间和气氛，涂层的状态（附聚、凝聚和固结）可以被控制在最佳的温度。 ...更多信息 离子）可以自由选择。此外，证明了该技术能够生产其包覆层不含残余气体等的高纯度复合粉末。作为对复合颗粒的烧结性能和将它们应用于组成梯度材料的可能性的讨论的结果，证明了该技术容易生产颗粒均匀分散在其中的聚集体，即使在烧结状态下也能保持这种均匀的分散，与传统的粉末混合技术相比，产生更少的空隙，并产生具有优异的异质界面接合性能的烧结体。另外，在制造成分梯度烧结体时，容易调整混合比。此外，添加到该技术使生产的试样无裂纹产生的热影响在烧结过程中。由于振动不会引起任何偏析，作者希望这种技术可以成为生产高可靠性复合材料的有效手段，

SUS/PSZ composite particles produced by a mechanofusion process which is one of the methods for mechanically combining more than one material. And the characteristics of their sintered structure were observed. SUS316L stainless steel is used as the core particles, and the partially stabilized (3Y-PSZ) is used as the coating particles. This technique was proved to easily produce aggregate in which particles are uniformly scattered, to maintain this uniform scattering even in the sintering status regardless of the other treatment, and to produced the sintered compact excellent in performances for joining the hetero interface.This technique, utilizing the intense compression force and heat generation during processing, facilitates fusing powder that forms the coating layers, and produces the composite particles whose core particle and coating layers are firmly fused. By controlling the processing time and atmosphere, the status of coating layers (agglomeration, coagulation, and consolidat … More ion) can be freely selected. Moreover, it was proved that this technique enabled producing of high purity composite powder whose coating layers do not contain residual gas, etc.As a result of discussion on the sintering performances of the composite particles and the possibility for applying them to compositionally gradient materials, this technique was proved to easily produce aggregate in which particles are uniformly scattered, to maintain this uniform scattering even in the sintering status regardless of the other treatment, to produce less voids than the conventional powder mixing techniques, and to produced the sintered compact excellent in performances for joining the hetero interface. Also, it is easy to adjust the blending ratio when producing the compositionally gradient sintered compact. Moreover, the added to this technique enabled producing specimens free from cracks produced by therminal influence during sintering. Since the vibration did not cause any segregation, the authors expect that this technique can be an effective means for producing highly reliable composite materials and Less