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http://dx.doi.org/10.4191/KCERS.2009.46.5.478

Thermal Shock and Hot Corrosion Resistance of Si3N4 Fabricated by Nitrided Pressureless Sintering  

Kwak, Kil-Ho (School of Mechanical and Automotive Engineering, Kookmin University)
Kim, Chul (School of Mechanical and Automotive Engineering, Kookmin University)
Han, In-Sub (Convergence Materials Research Center, Korea Institute of Energy Research)
Lee, Kee-Sung (School of Mechanical and Automotive Engineering, Kookmin University)
Publication Information
Journal of the Korean Ceramic Society / v.46, no.5, 2009 , pp. 478-483 More about this Journal
Abstract
Thermal shock and hot corrosion resistance of silicon nitride ceramics are investigated in this study. Silicon nitrides are fabricated by nitride pressureless sintering (NPS) process, which process is the continuous process of nitridation reaction of Si metal combined with subsequent pressureless sintering. The results of thermal shock test show it sustains 400MPa of initial strength during test in the designated condition of ${\Delta}T=700{\sim}25^{\circ}C$ up to maximum 4,800 cycles. Hot corrosion tests also reveal that the strength degradation of NPS silicon nitride did not occur at $700^{\circ}C$ with an exposure in Ar, $H_2$, Na and K for 1,275 h.
Keywords
Nitrided Pressureless Sintering(NPS); Silicon nitride; Thermal shock resistance; Corrosion resistance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 1
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