占位剂K<sub>2</sub>SO<sub>4</sub>对NiCu合金多孔膜孔结构的影响

Abstract
Figure/Table
References
Related Citation (2)

Download: PDF (838 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The Ni-K₂SO₄ mixed powder, in which Ni element powder is the raw material, and K₂SO₄ powder is the space-holder, is added into the polyvinyl butyral (PVB) ethanol solution to make a slurry, which is coated on the Cu foil. NiCu alloy porous membrane was prepared basing on Kirkendall effect by vacuum sintering. The influence of K₂SO₄contenton on area shrinkage, permeability, pore size, macro and micro morphologies of porous membrane and the influence of K₂SO₄ on the pore structure of porous membranes at different temperatures were investigated. The effect mechanism of K₂SO₄on pore structure of the porous alloy membrane during sintering process was also studied. The results show that with the increase of w(K₂SO₄) in Ni-K₂SO₄ mixed powder, the permeability of porous membrane first increases and then decreases. When the mass fraction of K₂SO₄ is lower than 40%, with the increase of K₂SO₄ content, the shrinkage rate of the film decreases and the permeability increases. The maximum permeability is 2 361 m³/(m²·h·kPa). The maximum pore diameter of the sample with little change is about 45 µm. When the w(K₂SO₄) is more than 40%, the permeability and pore diameter of the porous film both decrease obviously. When the w(K₂SO₄) is more than 60%, the permeability of the film layer is lower than that of the lower limit of the test instrument. Proper amount of K₂SO₄ can improve the permeability of porous alloy membrane through hindering sintering densification based on the space occupying effect in the Ni coating, but excessive amount of K₂SO₄ will block the diffusion of Cu atoms to Ni powder layer, which makes it difficult to form through-pores on the Cu foil, resulting in a significant decrease in permeability.

Key words： K₂SO₄ porous membrane NiCu alloy permeability pore diameter space-holder

Received: 18 December 2021 Published: 07 May 2021

ZTFLH:

TB31

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	FENG Luli
	YU Linping
	GAN Qingzhan
	GAO Haiyan
	HE Yuehui

Cite this article:

FENG Luli,YU Linping,GAN Qingzhan, et al. Effect of K₂SO₄space-holder on pore structure of NiCu alloy porous membrane[J]. Materials Science and Engineering of Powder Metallurgy, 2021, 26(2): 147-154.

URL:

http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2021/V26/I2/147

[1] 汪强兵, 汤慧萍, 奚正平. 多孔金属膜研究进展[J]. 材料导报, 2004, 18(6): 26-28.
WANG Qiangbing, TANG Huiping, XI Zhengping.Research progress of porous metal membrane[J]. Materials Reports, 2004, 18(6): 26-28.
[2] ZHANG J, LIU W S.Thin porous metal sheet-supported NaA zeolite membrane for water/ethanol separation[J]. Journal of Membrane Science, 2011, 371(1/2): 197-210.
[3] WANG H Q, HU X Y, KE Z W, et al.Review: Porous metal filters and membranes for oil-water separation[J]. Nanoscale Research Letters, 2018, 13(1): 1-14.
[4] JUERGEN C, MANFRED N.Zeolite membranes-status and prospective[J]. Advances in Nanoporous Materials, 2010, 1: 1-96.
[5] 杨保军, 唐慧萍, 汪强兵, 等. 金属多孔膜孔径分布特征的研究[J]. 材料科技与设备, 2015, 11(4): 21-22.
YANG Baojun, TANG Huiping, WANG Qiangbing, et al.Research on the pore size distribution characteristics of porous metal membranes[J]. Materials Science Technology & Equipment, 2015, 11(4): 21-22.
[6] 汪强兵, 汤慧萍, 奚正平, 等. 金属膜材料的制备和应用[C]// 2007中国钢铁年会. 成都: 中国金属学会, 2007.
WANG Qiangbing, TANG Huiping, XI Zhengping, et al.Fabrication and application of metal film materials[C]// 2007 China Iron & Steel Annual Conference. Chengdu: The Chinese Society for Metals, 2007.
[7] 杨保军, 奚正平, 汤慧萍, 等. 湿喷涂法制备金属多孔膜[J]. 功能材料, 2009, 40: 766-768.
YANG Baojun, XI Zhengping, TANG Huiping, et al.Preparation of porous metal membranes by wet spraying[J]. Functional Materials, 2009, 40: 766-768.
[8] 汪强兵. 多孔金属膜制备工艺的研究[D]. 西安: 西安建筑科技大学, 2004.
WANG Qiangbing.Research on preparation technology of porous metalmembrane[D]. Xi’an: Xi’an University of Architecture and Technology, 2004.
[9] LIU W, CANFIELD N. Development of thin porous metal sheet as micro-filtrationmembrane and inorganic membrane support[J]. Journal of Membrane Science, 2012, 409/410: 113-126.
[10] DYRENKOV A V, SMIRNOV B M, TERESHONOK D V.Generation of a metal porous film by arc discharge[J]. High Temperature, 2017, 55(6): 841-843.
[11] KANOKO Y, AMEYAMAK, TANAKA S, et al.Production of ultra-thin porous metal paper by fibre space holder method[J]. Powder Metallurgy, 2014, 57(3): 168-170.
[12] 潘金生, 仝健民, 田民波. 材料科学基础[M]. 北京: 清华大学出版社, 2011, 92-95.
PAN Jinsheng, TONG Jianmin, TIAN Minbo.Foundation of Materials Science[M]. Beijing: Tsinghua University Press, 2011, 92-95.
[13] 任晓, 陈国清, 周文龙, 等. NiCu扩散偶元素互扩散行为研究[J]. 硅酸盐通报, 2012, 31(3): 735-739, 757.
REN Xiao, CHEN Guoqing, ZHOU Wenlong, et al.Research on interdiffusion behavior of NiCu diffused couple[J]. Bulletin of the Chinese Ceramic Society, 2012, 31(3): 735-739, 757.
[14] YU L P, JIANG Y, HE Y H, et al.Fabrication of porous nickel- copper alloy with controlled micro-sized pore structure through the Kirkendall effect[J]. Materials Chemistry & Physics, 2015, 163: 355-361.
[15] SUN M, LU Z Y, LUO L, et al.3D porous Ni-Cu alloy film for high-performance hydrazine electrooxidation[J]. Nanoscale, 2015, 8(3): 1479-1484.
[16] 任雪潭, 侯来广, 刘艳春, 等. K₂SO₄-Na₂SO₄系统相变材料的热物性分析[J]. 陶瓷学报, 2013, 34(1): 41-45.
REN Xuetan, HOU Laiguang, LIU Yanchun, et al.Thermophysical analysis of phase change materials in K₂SO₄- Na₂SO₄ system[J]. Journal of Ceramics, 2013, 34(1): 41-45.