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Sintered porous material and filter element using same

A technology of porous materials and filter elements, applied in the field of sintered porous materials and filter elements using the porous materials, to achieve the effects of improving pore structure, reducing passage resistance, and excellent corrosion resistance

Active Publication Date: 2013-10-09
成都易态膜分离技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Before the filing date of this application, a sintered porous material similar to Ti-Al intermetallic compound porous material, which has the common characteristics of both metal materials and ceramic materials, and has stronger corrosion resistance has not been found.

Method used

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  • Sintered porous material and filter element using same
  • Sintered porous material and filter element using same
  • Sintered porous material and filter element using same

Examples

Experimental program
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Effect test

preparation example Construction

[0015] The preparation method of the sintered porous material and the sintered porous material obtained by these methods will be described in detail through experiments below. Through these descriptions, those skilled in the art can clearly understand the outstanding features of the sintered porous material of the present application. The numbers of the experimental examples mentioned below correspond to the numbers corresponding to "green compact" and "sample".

[0016] In order to illustrate the sintered porous material of the present application and its preparation, the following 10 sets of experimental examples have been prepared. Among them, samples 1 to 5 respectively prepared through experimental examples 1 to 5 all belong to the scope of the sintered porous material to be protected in claim 1 of the present application. Experimental examples 6 to 10 are comparative experiments embodying the substantive characteristics and technical effects of experimental examples 1 t...

experiment example 8

[0030] The sintering system of Experimental Example 8 is relatively simple, specifically, the sintering temperature is gradually increased from room temperature to 1300°C, the heating rate is controlled at 15°C / min, and the total sintering time is 180 minutes.

experiment example 9

[0031] The sintering system of Experimental Example 9 is divided into four stages, in which the first stage is to gradually increase the sintering temperature from room temperature to 150 ° C, the heating rate is controlled at 3 ° C / min, and then keep the temperature for 30 minutes to complete the NH 4 HCO 3 The second stage is to gradually increase the sintering temperature from 150°C to 480°C, the heating rate is controlled at 8°C / min, and then keep the temperature for 120 minutes to complete the TiH 2 Dehydrogenation pore formation; the third stage is to gradually increase the sintering temperature from 480°C to 620°C, control the heating rate at 2°C / min, and then keep it for 240 minutes to complete the reaction pore formation of Ti and Si to generate Ti-Si binary Intermetallic compounds; the fourth stage is to gradually increase the sintering temperature from 620°C to 1300°C, control the heating rate at 5°C / min, and then keep it warm for 300 minutes to promote the reacti...

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Abstract

The invention discloses a sintered porous material with high corrosion resistance and a filter element using the same. The sintered porous material disclosed by the invention has the following characteristics: a) the sintered porous material is mainly composed of Ti, Si and C which account for more than 90 wt% of the sintered porous material, wherein the Ti accounts for 60-75 wt% of the Ti, Si and C, and the Si accounts for 10-20 wt% of the Ti, Si and C; b) the C in the sintered porous material mainly exists in the form of a Ti3SiC2 three-element MAX-phase compound, and is approximately uniformly distributed in the porous material; and c) the test proves that the pure water filtration flux of the sintered porous material, of which the porosity is 30-60%, the average pore size is 0.5-50 mu m, the tensile strength is greater than or equal to 23 MPa and the thickness is less than or equal to 5 mm, is greater than or equal to 1t / m<2>.h under the filtration pressure difference of 0.05 MPa, and the weight loss rate of the sintered porous material is less than 1.5% after being soaked in a 5 wt% hydrochloric acid solution at room temperature for 48 hours. The sintered porous material disclosed by the invention has very excellent corrosion resistance.

Description

technical field [0001] The invention relates to a porous material and a filter element using the porous material, in particular to a sintered porous material prepared by a powder metallurgy method and a filter element using the porous material. Background technique [0002] At present, the research on sintered porous materials mainly focuses on the optimization of preparation process, the discussion of pore-forming mechanism, the improvement of material properties and the expansion of application range. Among them, as far as the pore-forming mechanism is concerned, the pore-forming methods that have been applied in the preparation method of sintered porous materials mainly include: first, the pore is formed by chemical reaction, which is based on the large difference in the intrinsic diffusion coefficient of different elements. The partial diffusion effect makes Kirkendall pores in the material; second, pores are formed through physical accumulation of raw material particles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20C22C1/08C22C29/00
CPCB01D39/20B01D39/2075B01D2239/1208B01D2239/1216C04B35/5615C04B35/62695C04B35/64C04B2235/3843C04B2235/402C04B2235/404C04B2235/422C04B2235/428C04B2235/44C04B2235/5436C04B2235/604C04B2235/6565C04B2235/6567C04B2235/661C04B2235/80C04B2235/81C04B2235/94C04B2235/96C04B2235/9669C04B38/00C04B2111/00793C04B38/0054C04B38/0074C04B38/02C04B2235/9684
Inventor 高麟汪涛李波
Owner 成都易态膜分离技术有限公司
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