Spark plug electrode produced from improved electrode material

A technology for electrode materials and spark plugs, applied in the direction of spark plugs, metal material coating technology, circuits, etc., to achieve the effects of improving conductivity, reducing transition resistance, and low cost

Active Publication Date: 2012-07-18
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although materials made of pure noble metals or based on noble metals, such as platinum or platinum alloys with iridium, exhibit increased resistance to funkenerosive effects and thus ve

Method used

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  • Spark plug electrode produced from improved electrode material
  • Spark plug electrode produced from improved electrode material
  • Spark plug electrode produced from improved electrode material

Examples

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Example Embodiment

[0053] The following reference figure 1 , 3 , 4 and 5 describe spark plug electrodes according to embodiments of the present invention.

[0054] by figure 1 with figure 2 The comparison illustrates the advantages of the electrode material according to the invention or the spark plug according to the invention. figure 1 with 2 It is a micrograph taken with a scanning electron microscope by magnifying part of the electrode 500 times. in figure 1 with figure 2 Here, reference numeral 1 identifies the corresponding electrode base material. Reference numeral 2 identifies the surface of the electrode material on which the oxide layer 3 has been formed. In addition, there is a gas chamber 4 into which electrodes are introduced.

[0055] figure 1 Is a micrograph of the nickel alloy according to the present invention, wherein the nickel alloy according to the present invention contains 0.2 weight percent of hafnium relative to the total weight of the electrode material as element b) and ...

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Abstract

The invention describes spark plug electrodes, which are characterized by improved oxidation and corrosion resistance, spark erosion resistance, and thermal conductivity.

Description

Technical field [0001] The invention relates to a spark plug electrode made of an alloy-based electrode material. Background technique [0002] Due to the continuous development of automobile engines and their components to improve efficiency and power, higher and higher requirements are also placed on the materials of engine components. In particular, the components that play an important role when the fuel mixture is ignited, namely the spark plug (and especially the spark plug electrode), are subject to high loads, particularly due to the high temperature and oxygen-rich atmosphere in the engine room. This makes it necessary to provide spark plugs that meet these high requirements. [0003] In addition, nickel alloys are used as the base material (Basismaterial) of spark plug electrodes because nickel not only has a high melting temperature that is essential for the temperature resistance of the alloy, but also has high resistance to corrosion. Although materials composed of p...

Claims

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Application Information

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IPC IPC(8): H01T13/39C22C19/03C22C28/00
CPCC22C19/03C22C19/007H01T13/39C22C19/00C22C28/00C23C8/10
Inventor L.门肯J.伯姆J.奥伯勒S.鲍斯
Owner ROBERT BOSCH GMBH
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