Ultra-lightweight ceramic scaffolds with simultaneous improvement of pore interconnectivity and mechanical strength

doi:10.1016/j.jmst.2022.07.052

IMR OpenIR

	Ultra-lightweight ceramic scaffolds with simultaneous improvement of pore interconnectivity and mechanical strength
	Dong, Ye 1; Chen, Annan 2,3; Yang, Ting 1; Gao, Shuai 1; Liu, Shuning 1; Jiang, Hongyi 1; Shi, Yusheng 2,3; Hu, Chenglong 4
通讯作者	Chen, Annan(AnnanChenNUAA@hust.edu.cn) ; Jiang, Hongyi(jianghy@whut.edu.cn)
	2023-02-20
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	137 页码:247-258
摘要	The high porosity and interconnectivity of scaffolds are critical for nutrient transmission in bone tis-sue engineering but usually lead to poor mechanical properties. Herein, a novel method that combines acid etching (AE) with selective laser sintering (SLS) and reaction bonding (RB) of Al particles is pro-posed to realize highly improved porosity, interconnectivity, mechanical strength, and in vitro bioactivity in 3D Al2O3 scaffolds. By controlling the oxidation and etching behaviors of Al particles, a tunable hol-low spherical feature can be obtained, which brings about the distinction in compressive response and fracture path. The prevention of microcrack propagation on the in situ formed hollow spheres results in unique near elastic buckling rather than traditional brittle fracture, allowing an unparalleled compressive strength of 3.72 +/- 0.17 MPa at a high porosity of 87.7% +/- 0.4% and pore interconnectivity of 94.7% +/- 0.4%. Furthermore, scaffolds with an optimized pore structure and superhydrophilic surface show excellent cell proliferation and adhesion properties. Our findings offer a promising strategy for the coexistence of out-standing mechanical and biological properties, with great potential for tissue engineering applications.(c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Ceramic scaffolds Selective laser sintering Acid etching Hollow spherical feature Mechanical strength In vitro bioactivity
DOI	10.1016/j.jmst.2022.07.052
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000876733000006
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/176446
专题	中国科学院金属研究所
通讯作者	Chen, Annan; Jiang, Hongyi
作者单位	1.Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China 2.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China 3.Engn Res Ctr Ceram Mat Addit Mfg, Minist Educ, Wuhan 430074, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Dong, Ye,Chen, Annan,Yang, Ting,et al. Ultra-lightweight ceramic scaffolds with simultaneous improvement of pore interconnectivity and mechanical strength[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2023,137:247-258.
APA	Dong, Ye.,Chen, Annan.,Yang, Ting.,Gao, Shuai.,Liu, Shuning.,...&Hu, Chenglong.(2023).Ultra-lightweight ceramic scaffolds with simultaneous improvement of pore interconnectivity and mechanical strength.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,137,247-258.
MLA	Dong, Ye,et al."Ultra-lightweight ceramic scaffolds with simultaneous improvement of pore interconnectivity and mechanical strength".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 137(2023):247-258.