Strength and fatigue of NT551 silicon nitride and NT551 diesel exhaust valves

Andrews, M.J. ; Werezczak, A.A. ; Kirkland, T.P. ; Breder, K.

Oak Ridge National Laboratory

关键词: Mechanical Properties;    Silicon Nitrides;    36 Materials Science;    33 Advanced Propulsion Systems;    Exhaust Systems;   

DOI  :  10.2172/755532
RP-ID  :  ORNL/TM-1999/332
RP-ID  :  AC05-00OR22725
RP-ID  :  755532

美国|英语

来源: UNT Digital Library

【 摘 要 】

The content of this report is excerpted from Mark Andrew's Ph.D. Thesis (Andrews, 1999), which was funded by a DOE/OTT High Temperature Materials Laboratory Graduate Fellowship. It involves the characterization of NT551 and valves fabricated with it. The motivations behind using silicon nitride (Si{sub 3}N{sub 4}) as an exhaust valve for a diesel engine are presented in this section. There are several economic factors that have encouraged the design and implementation of ceramic components for internal combustion (IC) engines. The reasons for selecting the diesel engine valve for this are also presented.