SINTERED POROUS MATERIAL AND FILTER ELEMENT USING SAME

摘要

Disclosed is a sintered porous material with stronger corrosion resistance and a filter element using same. The sintered porous material of the present application has following features: a) it mainly consists of three elements of Ti, Si and C, and the total weight of the three elements accounts for at least 90% of the weight of the sintered porous material, wherein Ti is 60-75% of the total weight of Ti, Si and C, and Si is 10-20% of the total weight of Ti, Si and C; b) C in the sintered porous material is mainly present in the form of the Ti3SiC2 ternary MAX phase compound, and is almost uniformly dispersed in the porous material; c) the porous material has porosity of 30-60%, average pore size of 0.5-50 μm, tensile strength of at least 23 MPa, pure water filtration flux of 1 t/m2·h at least measured under a filtration pressure difference of 0.05 MPa with a thickness of 5 mm at most for the sintered porous material, and a weight loss rate of at most 1.5% after being immersed into a 5 wt. % chlorhydric acid solution at room temperature for 48 days. The sintered porous material of the present invention has the excellent corrosion resistance property.

主权项

1. A sintered porous material is characterized in that:
a) it mainly consists of three elements of Ti, Si and C, and the total weight of the three elements accounts for at least 90% of the weight of the sintered porous material, wherein Ti is 60-75% of the total weight of Ti, Si and C, and Si is 10-20% of the total weight of Ti, Si and C; b) C in the sintered porous material is mainly present in the form of the Ti3SiC2 ternary MAX phase compound, and is almost uniformly dispersed in the porous material; c) the porous material has the porosity of 30-60%, an average pore size of 0.5-50 μm, tensile strength of at least 23 MPa, a pure water filtration flux measured under a filtration pressure difference of 0.05 MPa of the sintered porous material with a thickness of at most 5 mm of at least 1 t/m2·h, and a weight loss rate of at most 1.5% after being immersed into a 5 wt. % chlorhydric acid solution at room temperature for 48 days.