Effect of Different Powder Size on the Pore Properties of Porous Ti-33Al Intermetallics Fabricated by Add Material Manufacture

Abstract

Porous Ti-33Al Intermetallicss were manufactured utilizing Al and Ti element mixed powder as raw materials and based on the Kirkendall effect add material manufacture technique to satisfy the demands of TiAl intermetallics filter elements in the chemical, hydrometallurgical, petrochemical, and other industries. The quantitative relationship between Til Al element powder particle size and pore structure characteristics including, permeability, pore size and porosity of Ti-33A1 porous material was explored in depth. The study indicate that the powder particle size has a significant impact on the regulation of pore structure in porous materials. The permeability and pore size of the materials will rise as the particle size of the raw materials increases. Between the permeability and maximum pore size, the Hagen-Poiseuille equation is carefully obeyed, and its mathematical expression is $J=0.205d_{m}^{2}\theta$. This study will benefit in the production of porous materials with added material manufacture technology.