Pore Structure Control and Characterization of Al Foam Prepared by NaCl Beads

	Pore Structure Control and Characterization of Al Foam Prepared by NaCl Beads
	Jia Jiangang; Jing Yongzhi; Liu Diqiang; Guo Tieming; Ji Genshun
	2019-10
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	48 期号:10 页码:3275-3281
摘要	Starch, distilled water and NaCl powders as raw materials were mixed to form a colloidal salt paste and then thermally treated in 70 degrees C oil under vigorous stirring. Then highly spherical NaCl beads were obtained under the shear action of a blender. Afterwards, the "fried" NaCl beads with a particle size distribution of 0.4 similar to 2.4 mm were calcined and sintered at 740 degrees C, and thus the high purity NaCl beads with small amount of micro-pore (pores size 10 similar to 20 mu m) on the surface were obtained. The 0.6-1.0 mm salt beads were selected to form a "salt bed" in a steel die and the aluminum powder was filled into the "salt bed" gap via a tapping method by the Autotap instrument. The tapped mixture was cold pressed under 200 MPa to obtain the green compact parts. Then the salts were dissolved and removed in distilled water and three-dimensional open-cell green Al foam with controllable structure and high reproducibility was derived. After sintering at 460 degrees C for 2 h, the final Al foam was obtained and its relative density and porosity are 0.217 and 78.3%, respectively. The number of connectivity windows between cellular aluminum cells is 4 similar to 6 in average, and the window size is 120 similar to 200 mu m. The compressive load-displacement curve shows that the aluminum foam undergoes an elastic deformation stage, a plateau stress area, and a stress steep increase stage. The curve manifests the characteristics of foam metal compression mechanical properties, and its compressive strength and Young's modulus are 2.42 MPa and 0:38 GPa, respectively.
关键词	space holder salt ball foams Al porous material powder metallurgy
收录类别	SCI ; SCIE
语种	中文
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000494079600031
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
EI入藏号	20194807761275
EI主题词	Foam control
EI分类号	461.3 Biomechanics, Bionics and Biomimetics - 541.1 Aluminum - 802.3 Chemical Operations - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/76638
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
通讯作者	Jia Jiangang
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Jia Jiangang,Jing Yongzhi,Liu Diqiang,et al. Pore Structure Control and Characterization of Al Foam Prepared by NaCl Beads[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(10):3275-3281.
APA	Jia Jiangang,Jing Yongzhi,Liu Diqiang,Guo Tieming,&Ji Genshun.(2019).Pore Structure Control and Characterization of Al Foam Prepared by NaCl Beads.RARE METAL MATERIALS AND ENGINEERING,48(10),3275-3281.
MLA	Jia Jiangang,et al."Pore Structure Control and Characterization of Al Foam Prepared by NaCl Beads".RARE METAL MATERIALS AND ENGINEERING 48.10(2019):3275-3281.