陶瓷材料作为传统火花塞电极的替代品

IF 1.8 4区 材料科学 Q2 MATERIALS SCIENCE, CERAMICS
Walter Harrer, Manuel Gruber, Verena Melcher, Anton Tilz, Michael Engelmayer, Andreas Wimmer, Raul Bermejo
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引用次数: 0

摘要

大型燃气发动机通常用于补偿电力供应中的峰值负荷和电网不稳定性。这些发动机的一个关键部件是火花塞。由于使用条件恶劣,火花塞电极磨损严重。传统电极因含有贵金属合金而价格昂贵。作为替代方案,我们选择了硅化物、碳化物和氮化物类陶瓷材料进行初步实验,研究其功能、机械性能和磨损行为。由于工作条件恶劣,新材料必须具有高熔点、良好的抗热震性、高导热性、高抗腐蚀/抗氧化性以及高密度。研究发现,某些候选陶瓷材料的机械和热机械性能足以用作火花塞电极。此外,所选的陶瓷材料在二次电压痕量和点火行为方面也具有足够的性能。不过,耐磨性可能不足以满足使用时间长于现有火花塞使用时间的要求,因此在将陶瓷电极确立为现有电极的商业替代品之前,仍有必要开展进一步的研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Ceramic materials as an alternative for conventional spark plug electrodes

Ceramic materials as an alternative for conventional spark plug electrodes

Large gas engines are typically applied to compensate for peak loads and grid instabilities in the electric power supply. A key component of these engines is the spark plug. Because of the harsh conditions encountered in their use, the spark plug electrodes are subject to significant wear. Conventional electrodes are expensive due to the precious metal alloys they contain. As an alternative, ceramic materials from the groups of silicide, carbides, and nitrides were selected for preliminary experiments that investigate functional as well as mechanical properties and wear behavior. Because of the harsh conditions during operation, the new materials must have a high melting temperature, good thermal shock resistance, high thermal conductivity, and high corrosion/oxidation resistance as well as high density. It was found that the mechanical and thermomechanical properties of certain ceramic candidates are sufficient for application as spark plug electrodes. Furthermore, the chosen ceramic materials achieve an adequate performance in terms of secondary voltage trace and ignition behavior. However, wear resistance may not be sufficient for service times longer than the service time of existing spark plugs and further research is still necessary before ceramic electrodes may be established as a commercial alternative to existing electrodes.

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来源期刊
International Journal of Applied Ceramic Technology
International Journal of Applied Ceramic Technology 工程技术-材料科学:硅酸盐
CiteScore
3.90
自引率
9.50%
发文量
280
审稿时长
4.5 months
期刊介绍: The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;
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