| Experiments on characteristics of sintered stainless steel and bronze filters have been performed. The variables in this experiment are powder shape, particle size distribution, sintering temperature and atmosphere. The experimental data are presented to show permeability, maximum pore size, shear strength and corrosion resistance on various sintering conditions. The permeability is influenced to a greater extent by varying porosity than by varying the particle size which is only significant when the particle shape is spherical. The sintered bronze f1lter made of nearly spherical particle leads to an increment in permeability with larger sieve fraction even though it has almost same sintered porosity. However, the sintered stainless steel filter made of irregular particle shows negligible difference in permeability by varying particle size. The maximum mean pore size and permeability are significantly affected by powder shape; the filter made of spherical particle shows larger pore size and better permeability than that of irregular particle shape. The stainless steel filter sintered in N2, atmosphere shows higher shear strength than the filter sintered in H2 or Ar atmosphere, while the filter tends to show lower corrosion resistance. |
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