Study on Hole-Sealing Coating of Porous Silicon Nitride Surface

Qi Hong Wei; Chong Hai Wang; Ling Li; Hong Sheng Wang; Jian Liu; Rong Liao

doi:10.4028/www.scientific.net/KEM.537.20

Paper Titles

Factors Affecting the Fracture Strength of Freestanding Diamond Films
p.1

Tribological Performance of Ceramic Composite Coatings Obtained through Microarc Oxidation on Ly12 Aluminum Alloy
p.7

Effects of Substrate Temperature on the Properties of Silicon Nitride Films by PECVD
p.12

Study on Inorganic Coating of Porous Nitride Radome
p.16

Study on Hole-Sealing Coating of Porous Silicon Nitride Surface
p.20

The Effect of SiC Coating on the Joint of C/C and LAS
p.24

Crack Formation and Distribution of SiC Coating Prepared by CVD on Carbon/Carbon Composites
p.28

A C/SiC Graded Coating on C/C Composites by LPCVD in the Methyltrichlorosilane/Hydrogen System
p.32

Effect of Yb₂SiO₅ Ceramic Layer Thickness on the Thermal Cycling Life of Yb₂SiO₅⁄LaMgAl₁₁O₁₉ Coating Deposited on C⁄SiC Composites
p.36

HomeKey Engineering MaterialsKey Engineering Materials Vol. 537Study on Hole-Sealing Coating of Porous Silicon...

Study on Hole-Sealing Coating of Porous Silicon Nitride Surface

Abstract:

Hole-sealing coating was fabricated on the porous silicon nitridesubstrate by sol-gel method, with Li2O-Al2O3-SiO2 as the basic materials and other additives were added. The morphology of the coating was tested by scanning electron microscope(SEM). The density,water absorption and porosity of porous silicon nitride before and after coating were tested by Archimedes method.The bending strength was tested by universal testing machine．The results indicated that the water absorption of porous silicon nitride was decreaced by 93.73% to 96.74%, the bending strength of porous silicon nitride was increaced by 8.21％ to 15.56％.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 537)

Pages:

20-23

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.537.20

Citation:

Cite this paper

Online since:

January 2013

Authors:

Qi Hong Wei, Chong Hai Wang, Ling Li, Hong Sheng Wang, Jian Liu, Rong Liao

Keywords:

Coating, Hole Sealing, Porous Silicon Nitride

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] S.B. Wang, S.J. Liu, Y. Zhang, Study on damp-proof and enhanced coating of porous Si3N4, J. Inorganic Meter., 23 (2008) 769~773.

Google Scholar

[2] H.G. Qiu, J.S. Cheng, L.Y. Tang, et al, The influence of heat treatment on the density and coefficient of thermal expansion of Li2O-Al2O3-SiO2 system glass-ceramics. Glass & Enamel, 35 (2007) 1~6

Google Scholar

[3] Y.Zhao, L.Lu, L.J. Zhang, Effects of heat-treatment on the crystallization and properties of Li2O-Al2O3-SiO2 system glass-ceramics. Bulletn of Chinese Ceramic Society, 26 (2007) 561~566.

Google Scholar

[4] Z.X. Hou, Crystallization behavior study on the Li2O-Al2O3-SiO2 system glass-ceramics. Ordnance Mater. Sci. Engi., 30 (2007) 42~45

Google Scholar

[5] D. Leguillon, R. Piat, .Eng. Fract. Mech, 75 (2008) 1840~1853.

Google Scholar