Sintering behaviors and properties of porous ceramics derived from artificially cultured diatom frustules

Lyu, Sha1; Wang, Yanjing1; Huang, Jintao1; Li, Tao1; Li, Dandan1; Wang, Jaw-Kai1,2; Zhang, Jiangtao2; Sun, Dazhi1; Yu, Peng1

2021

10.1111/jace.17611

JOURNAL OF THE AMERICAN CERAMIC SOCIETY   影响因子和分区

0002-7820

1551-2916

Bimodal porous ceramics with high strength have been fabricated by conventional powder metallurgy utilizing artificially cultured diatom frustules (DFs). The effect of sintering temperature on thermal behaviors, phase transition, and pore structures features of DFs-based porous ceramics is investigated between 800 and 1200 degrees C. The phase evolution of DFs powders is investigated with thermal analysis (DIL and DSC-TG). Phase transition behaviors analyzed with XRD, Raman, and FT-IR spectra confirm the transformation of quartz into cristobalite phases occurs under 1050 degrees C. Sintering under 950 degrees C could bind DFs powders tightly into high strength porous ceramics while maintain the multilayer pore structures simultaneously, having porosity of 56.4%, compressive strength of 15.0 MPa and surface area of 50.9 m(2)/g, respectively. Slit-shaped microstructures and mesopores (2-50 nm) are observed in DFs-based porous ceramics sintered under 1050 degrees C. Collapse and blockage of pore structures as well as partial fusion of DFs particles happened at the temperature of 1100 degrees C, indicating the presence of diminished multilayers and particle agglomeration.

diatom frustule phase transition porous ceramic powder metallurgy

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[52003111]

Materials Science

Materials Science, Ceramics

WOS:000604730300001

WILEY

20210209757537

Compressive strength ; Multilayers ; Pore structure ; Powder metallurgy ; Powders ; Silica ; Silicate minerals ; Thermoanalysis

Minerals:482.2 ; Chemistry:801 ; Physical Properties of Gases, Liquids and Solids:931.2

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guanghzou, Peoples R China
2.Shenzhen Jawkai Bioengn R&D Ctr Co Ltd, Shenzhen, Guangdong, Peoples R China

Lyu, Sha,Wang, Yanjing,Huang, Jintao,et al. Sintering behaviors and properties of porous ceramics derived from artificially cultured diatom frustules[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2021,104(5):2378-2387.

Lyu, Sha.,Wang, Yanjing.,Huang, Jintao.,Li, Tao.,Li, Dandan.,...&Yu, Peng.(2021).Sintering behaviors and properties of porous ceramics derived from artificially cultured diatom frustules.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,104(5),2378-2387.

Lyu, Sha,et al."Sintering behaviors and properties of porous ceramics derived from artificially cultured diatom frustules".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 104.5(2021):2378-2387.