[Object] [0002] The present invention provides a porous sintered body which has a uniform porosity, a high level of freedom in forming, allowing to be formed into varieties of shapes and various levels of porosity, and to be formed to an extremely high lev...

Zinc powder or zinc alloy powder has an inhomogeneous bulk density distribution depending on the particle size. The difference of the bulk density measured according to ASTM B212 at a grain size amount of less than 75 mum to the grain size amount of more t...