Preparation and corrosion resistance of SiC membrane using for dust removal in high temperature

Dongyan LI; Wei WEI; Feng HAN

doi:10.11949/j.issn.0438-1157.20180960

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Preparation and corrosion resistance of SiC membrane using for dust removal in high temperature

Material science and engineering, nanotechnology | 更新时间：2020-06-24

- Preparation and corrosion resistance of SiC membrane using for dust removal in high temperature
- CIESC Journal Vol. 70, Issue 1, Pages: 336-344(2019)
- 作者机构：
  
  1.南京科技职业学院化工与材料学院，江苏南京 210048
  2.南京膜材料产业技术研究院有限公司，江苏南京 211100
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180960
  CLC： TQ 174.6
- Received：27 August 2018，
  
  Revised：2018-10-25，
  
  Published：05 January 2019
- 稿件说明：
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李冬燕, 魏巍, 韩峰. 高温除尘碳化硅膜的制备及其抗腐蚀特性[J]. 化工学报, 2019, 70(1): 336-344

LI Dongyan, WEI Wei, HAN Feng. Preparation and corrosion resistance of SiC membrane using for dust removal in high temperature[J]. CIESC Journal, 2019, 70(1): 336-344
李冬燕, 魏巍, 韩峰. 高温除尘碳化硅膜的制备及其抗腐蚀特性[J]. 化工学报, 2019, 70(1): 336-344 DOI： 10.11949/j.issn.0438-1157.20180960.

LI Dongyan, WEI Wei, HAN Feng. Preparation and corrosion resistance of SiC membrane using for dust removal in high temperature[J]. CIESC Journal, 2019, 70(1): 336-344 DOI： 10.11949/j.issn.0438-1157.20180960.

摘要

采用喷涂法在碳化硅（SiC）支撑体上覆膜，根据碳化硅材料的氧化特性，设计了有氧烧结和氩气烧结随温度转换的组合烧结制度，并通过优化保温时间降低碳化硅陶瓷膜烧结成本。研究结果表明，新的烧结制度能有效地控制有氧烧结阶段产生的二氧化硅（SiO

）量，并促进其与烧结助剂氧化锆（ZrO

）等在气氛烧结阶段的反应，反应生成的锆英石相和添加莫来石相共同形成SiC颗粒连接颈部。制备的碳化硅陶瓷膜平均孔径为3.03 μm，气体通量为175 m

∙m

-2

∙h

-1

∙kPa

-1

。且在100℃的0.25 mol∙L

-1

的H

溶液和0.25 mol∙L

-1

的NaOH溶液中腐蚀6 h后，膜层表面形貌无明显变化，具有较强的抗腐蚀性能。

Abstract

Spray-coating was used to prepared silicon carbide (SiC) membranes on the surface of SiC supports

then the coated samples were sintered by switching sintering atmospheres (aerobic to argon) over different temperature ranges according to the oxidation characteristics of SiC

and the sintering cost of SiC ceramic membranes was reduced by optimizing the soaking time. The results revealed that the new sintering procedures can effectively control the oxidation of SiC in the aerobic sintering stage

and promoted its oxidation product silica （SiO

） reaction with the sintering aids such as zirconia (ZrO

) in the argon sintering stage. The average pore size of the prepared SiC ceramic membrane was 3.03 μm and the gas permeation was 175 m

·m

-2

·h

-1

·kPa

-1

. After etching for 6 h in 0.25 mol·L

-1

solution and 0.25 mol·L

-1

NaOH solution at 100℃

the surface morphology of the film has no obvious change and has strong corrosion resistance.

关键词

Keywords

references

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