Influence of Metal Additives on Microstructure and Properties of Amorphous Metal-SiOC Composites

Ming, Kaisheng1,2; Su, Qing1; Gu, Chao1,3; Xie, Dongyue1; Wang, Yongqiang4; Nastasi, Michael1,5; Wang, Jian1,5

2019-07

10.1007/s11837-019-03484-x

JOM   影响因子和分区

1047-4838

1543-1851

Strong, ductile, and irradiation-tolerant structural materials are in urgent demand for improving the safety and efficiency of advanced nuclear reactors. Amorphous ceramics could be promising candidates for high irradiation tolerance due to thermal stability and lack of crystal defects. However, they are very brittle due to plastic flow instability. Here, we realized enhanced plasticity of amorphous ceramics through compositional and microstructural engineering. Two metal-amorphous ceramic composites, Fe-SiOC and Cu-SiOC, were fabricated by magnetron sputtering. Iron atoms are preferred to form uniformly distributed nano-sized Fe-rich amorphous clusters, while copper atoms grow non-uniformly distributed nano-crystalline Cu particles. The Fe-SiOC composite exhibits high strength and plasticity associated with strain hardening, as well as a good thermal stability and irradiation tolerance. In contrast, the Cu-SiOC composite displays a very low plasticity and poor thermal stability. These findings suggest that the metal constituents play a crucial role in developing microstructure and determining properties of metal-amorphous composites.

SCI ; EI

英语

其他

National Nuclear Security Administration of the U.S. Department of Energy[DE-AC52-06NA25396]

Materials Science ; Metallurgy & Metallurgical Engineering ; Mineralogy ; Mining & Mineral Processing

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mineralogy ; Mining & Mineral Processing

WOS:000471617100033

SPRINGER

20191906879124

Additives ; Ceramic materials ; Crystal defects ; Iron compounds ; Irradiation ; Metals ; Microstructure ; Nuclear reactors ; Plasticity ; Stability ; Strain hardening ; Thermodynamic stability

Heat Treatment Processes:537.1 ; Thermodynamics:641.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Crystal Lattice:933.1.1 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Univ Nebraska, Mech & Mat Engn, Lincoln, NE 68588 USA
2.Beihang Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Aerosp Mat & Performance, Beijing 100191, Peoples R China
3.South Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
4.Los Alamos Natl Lab, MST Div, Los Alamos, NM 87544 USA
5.Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

Ming, Kaisheng,Su, Qing,Gu, Chao,et al. Influence of Metal Additives on Microstructure and Properties of Amorphous Metal-SiOC Composites[J]. JOM,2019,71(7):2445-2451.

Ming, Kaisheng.,Su, Qing.,Gu, Chao.,Xie, Dongyue.,Wang, Yongqiang.,...&Wang, Jian.(2019).Influence of Metal Additives on Microstructure and Properties of Amorphous Metal-SiOC Composites.JOM,71(7),2445-2451.

Ming, Kaisheng,et al."Influence of Metal Additives on Microstructure and Properties of Amorphous Metal-SiOC Composites".JOM 71.7(2019):2445-2451.