Near Net Shape, Low Cost Ceramic Valves for Advanced Engine Applications

Pidria, M.; Merlone, E.; Parussa, Flavio; Handelsman, Jo; Gorodnev, A. L.

doi:10.4028/www.scientific.net/msf.426-432.2321

Cited by 2 publications

(4 citation statements)

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“…Advanced ceramics may also become necessary for new engine systems that require the use of light‐weight components in higher temperatures to achieve further engine efficiency and emission reduction to meet ever‐stringent environmental regulations. However, several barriers exist for the wide use of ceramics; the two major barriers are cost and reliability 1–4,12,13 . During the last few decades, considerable research has been directed toward addressing these and other barriers.…”

Section: Introductionmentioning

confidence: 99%

“…During the last few decades, considerable research has been directed toward addressing these and other barriers. For example, significant efforts were made to develop near‐net‐shape processing to produce ceramic components 12 . These technologies may improve the microstructure and reduce the finishing (machining) requirements that may induce damage.…”

Section: Introductionmentioning

confidence: 99%

“…However, several barriers exist for the wide use of ceramics; the two major barriers are cost and reliability. [1][2][3][4]12,13 During the last few decades, considerable research has been directed toward addressing these and other barriers. For example, significant efforts were made to develop near-net-shape processing to produce ceramic components.…”

Section: Introductionmentioning

confidence: 99%

“…For example, significant efforts were made to develop near-net-shape processing to produce ceramic components. 12 These technologies may improve the microstructure and reduce the finishing (machining) requirements that may induce damage. They may therefore reduce the manufacturing cost and improve component reliability.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evaluation of Silicon‐Nitride Ceramic Valves

Sun

Zhang

Andrews

et al. 2008

Int J Applied Ceramic Tech

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Silicon‐nitride ceramic valves can improve the performance of both light‐ and heavy‐duty automotive engines because of the superior material properties of silicon nitrides over current metal alloys. However, ceramics are brittle materials that may introduce uncertainties in the reliability and durability of ceramic valves. As a result, the lifetime of ceramic valves are difficult to predict theoretically due to wide variations in the type and distribution of microstructural flaws in the material. Nondestructive evaluation (NDE) methods are therefore required to assess the quality and reliability of these valves. Because ceramic materials are optically translucent and the strength‐limiting flaws are normally located near the valve surface, a laser‐scatter method can be used for NDE evaluation of ceramic valves. This paper reviews the progress in the development of this NDE method and its application to inspect silicon‐nitride ceramic valves at various stages of manufacturing and bench and engine tests.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%