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A kind of nickel base superalloy, its preparation method and its application in spark plug electrode

A nickel-based superalloy, heat preservation and aging technology, used in spark plugs, circuits, electrical components, etc., can solve the problems of easy ablation of the center electrode and increase of ignition energy, and reduce holes, improve stability, and good high temperature resistance. The effect of oxidative properties

Active Publication Date: 2015-10-21
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of electrode material is that the center electrode is easy to ablate due to the increase of ignition energy

Method used

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  • A kind of nickel base superalloy, its preparation method and its application in spark plug electrode
  • A kind of nickel base superalloy, its preparation method and its application in spark plug electrode
  • A kind of nickel base superalloy, its preparation method and its application in spark plug electrode

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of nickel-based superalloy (7# alloy):

[0038] The material is composed of the following weight percentages: C0.05%, Cr20%, W8%, Mo6%, Ti2%, Al2%, B0.005%, Zr0.04%, Fe0.8%, Nb2%, Y0.4 %, Ni58.705%.

[0039] According to the above composition, the raw materials were smelted in a vacuum arc melting furnace, shaped, and subjected to solution treatment, kept at 1200°C for 4 hours, and air-cooled; then subjected to aging treatment, kept at 800°C for 10 hours, and air-cooled.

[0040] Preparation of comparative nickel-based superalloys:

[0041] The preparation method is the same as that of nickel-based superalloy, and the composition of each material is shown in Table 1 (1#~6#).

[0042] Table 1 Chemical composition (wt%) of nickel-based superalloy materials

[0043]

[0044] The as-cast microstructure of nickel-based alloys, from Figure 11 It can be seen that the alloy structure is dendritic, and the primary trunk and the secondary and tertiary trunks a...

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Abstract

The invention relates to a nickel-based high temperature alloy, a preparation method thereof as well as application thereof in a spark plug electrode. The nickel-based high temperature alloy contains the following components in percent by weight: 0.04%-0.06% of C, 19%-21% of Cr, 7%-9% of W, 5%-7% of Mo, 1%-2% of Ti, 0.5%-2% of Al, 0.004%-0.006% of B, 0.03%-0.05% of Zr, 0.7%-0.9% of Fe, 0-3% of Nb, 0-1% of Y, and the balance of Ni and inevitable impurities. The preparation method of the nickel-based high temperature alloy comprises the following steps of: mixing the components in a vacuum electric-arc melting furnace according to a proportion, smelting, getting out and forming; heating up to 1200 DEG C in a heating furnace, carrying out thermal-insulation solid-solution treatment for 4 hours, and carrying out air-cooling; and carrying out thermal-insulation aging treatment for 10 hours at 800 DEG C, and carrying out air-cooling to prepare the nickel-based high temperature alloy. The nickel-based high temperature alloy disclosed by the invention has good high-temperature oxidation resistance and corrosion resistance, and can be applied to the spark plug electrode material so as to prolong the service life of an electrode and the service life of a spark plug.

Description

technical field [0001] The invention relates to a nickel-based high-temperature alloy, in particular to a nickel-based high-temperature alloy applied to spark plug electrode materials. Background technique [0002] Nickel itself is a multifunctional corrosion-resistant material with excellent characteristics: 1) Nickel is a face-centered cubic structure with a very stable structure, and no allotropic transformation occurs from room temperature to high temperature, which is very important for the selection of matrix materials . 2) Nickel has high chemical stability. Nickel is hardly oxidized below 500°C, and is not affected by moisture, water and some aqueous salt solutions at room temperature. Nickel dissolves very slowly in sulfuric acid and hydrochloric acid. 3) Nickel has good alloying ability, and even adding more than 10 alloy elements does not appear harmful phases, which provides potential possibilities for improving various properties of nickel. As an alloying elem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05C22F1/10H01T13/39
Inventor 陈传忠万凯牟津津于慧君
Owner SHANDONG UNIV
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