Development of Ceramic Turbocharger Rotors for High-Temperature Use

Kawase, Hiroyuki; Kato, Kiminari; Matsuhisa, T.; Mizuno, Takeyuki

doi:10.1115/1.2906681

Cited by 5 publications

(3 citation statements)

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“…Occasionally, a double interlayer is used, such as with the NGK/NTK sparkplug turbocharger rotor, where W and Kovar have been used to join Si 3 N 4 and steel. 17,[105][106][107][108] These bonds are produced by brazing. Such designs are effective, but add complexity and cost to the component.…”

Section: Fundamental Studies On Ceramic/metal Interfacesmentioning

confidence: 99%

Joining of engineering ceramics

Fernie

Drew

Knowles

2009

International Materials Reviews

246

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Engineering ceramics such as alumina, zirconia, silicon nitride and silicon carbide can now be manufactured reliably with reproducible properties. As such, they are of increasing interest to industry, particularly for use in demanding environments, where their thermomechanical performance is of critical importance, with applications ranging from fuel cells to cutting tools. One aspect common to virtually all applications of engineering ceramics is that eventually they must be joined with another material, most usually a metal. The joining of engineering ceramics to metals is not always easy. There are two main considerations. The first consideration is the basic difference in atomic bonding: the ionic or covalent bonding of the ceramic, compared to the metallic bond. The second consideration is the mismatch in the coefficient of thermal expansion. In general, ceramics have a lower coefficient of thermal expansion than metals and, if high tensile forces are produced in the ceramic, either as a consequence of operating conditions or from the joining procedure itself, failure can occur. The plethora of joining processes available will be reviewed in this article, placing them in context from both an academic and commercial perspective. Comment will be made on research reporting advances on known technology, as well as introducing 'newer' technologies developed over the last 10 years. Finally, reviews and commentary will be made on the potential applications of the various joining processes in the commercial environment.

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Section: Fundamental Studies On Ceramic/metal Interfacesmentioning

confidence: 99%

Joining of engineering ceramics

Fernie

Drew

Knowles

2009

International Materials Reviews

246

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“…Traditionally, shrink fitting and brazed have been used to join Si 3 N 4 rotors to metallic shafts [29,30]. On a more recent joint design, the ceramic rotor was shrink fitted to a metallic sleeve which was then friction welded to the shaft, resulting in improved bearing cooling and reduced residual stresses [31,32]. Novel ceramic/metal joining techniques are in constant development.…”

Section: Introductionmentioning

confidence: 99%

Review Article: recent advances in metal-ceramic brazing

2003

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Metal-ceramic joining has slowly but steadily become an important manufacturing step. The evolution of joining processes has allowed ceramics to be used in combination with metals in a number of hybrid devices from traditional light bulbs and seals to improved cutting tools and modern monitoring and measuring electronic devices. New joining methods and newer approaches to conventional methods have been developed aiming at joints characterized by improved reliability, and interfaces capable of withstanding high-temperature resistance with minimum residual stresses. A summary of recent improvements on alternative approaches to ceramic-metal joining as well as new developments on brazing are presented herein. The present review also focuses on recent advances towards brazing metallized ceramics and the selection of filler alloys, since in a scenario that includes joining by laser and direct bonding with liquid transient phases, brazing continues to be by far the most widely used approach to joining as a result of its low-cost and possibility to join intricate geometries for large-scale production. Finally, methods to evaluate the mechanical strength and residual thermal stresses are presented in addition to alternative approaches to minimize residual stresses and, consequently, improve joint reliability.

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“…The examples of the turbocharger rotor assemblies made from silicon nitride are shown in figure 8 while figure 9 shows a stand-alone ceramic turbine rotor. The important characteristics of CTR made from SN-84EC is its impact resistance against foreign object damage (FOD) such as oxide particles from the interior of the exhaust manifold [37]. International Inc.) [38].…”

Section: Ceramic Turbocharger Rotorsmentioning

confidence: 99%

Review on Ceramic Application in Automotive Turbocharged Engines

Nor

Abbas

Rajoo

et al. 2014

AMM

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Research on the use of thermal barrier coatings in internal combustion engine had contributed in achieving higher thermal efficiency, improved combustion and reduced emissions of the engine. Low thermal conductivity ceramics can be used to control the temperature distribution and heat flow in high temperature structural components due to its inherent thermal insulation properties. For this reason much has been and is being done on the study and development of ceramics for use in automotive engine components working under severe temperature conditions and heavy loads due to their inherent thermal and mechanical properties. The objective of the study is to review the contributions of structural ceramics in the development and improvement of some of the major automotive engine components working under severe conditions of temperature. It is expected that the study will serve as a useful guide for the selection of materials which can withstand severe conditions of temperature and heavy loads for a novel turbocharger and turbocharged engine applications.

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Development of Ceramic Turbocharger Rotors for High-Temperature Use

Cited by 5 publications

References 0 publications

Joining of engineering ceramics

Joining of engineering ceramics

Review Article: recent advances in metal-ceramic brazing

Review on Ceramic Application in Automotive Turbocharged Engines

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