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A kind of iron-based amorphous/max phase composite material for piston ring and its preparation method and application
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A technology of iron-based amorphous and composite materials, which is applied in the direction of metal material coating technology, coating, fusion spraying, etc., and can solve the problems that the wear resistance of iron-based amorphous coatings needs to be improved.
Active Publication Date: 2021-05-04
HOHAI UNIV
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Problems solved by technology
However, the performance of the existing iron-based amorphous coatings in terms of wear resistance, especially wear reduction, still needs to be improved
Method used
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Embodiment 1
[0023] An iron-based amorphous / MAX phase composite material for piston rings, comprising iron-based amorphous and MAX phases, wherein the MAX phase content is 8 wt%; the iron-based amorphous comprises the following components by weight: 26wt% Cr, 5wt% B, 3wt% Si, 3wt% Nb, 5wt% Ni, 10wt% Mo, the balance being Fe; the MAX phase is Ti 3 SiC 2 .
[0024] Composite materials are prepared by the following steps:
[0025] (1) According to the above-mentioned iron-based amorphous composition and weight ratio, weigh a certain amount of low-carbon ferrochrome, high-carbon ferrochrome, ferroboron, ferrosilicon, electrolytic copper, electrolytic nickel, ferromolybdenum and pure iron (including low-carbon chromium The content ratio of iron and high-carbon ferrochrome has no effect, only to obtain the corresponding element content), according to the principle of adding high melting point first, then low melting point, and materials containing easily burnt elements, add ferromolybdenum, hi...
Embodiment 2
[0033] An iron-based amorphous / MAX phase composite material for piston rings, comprising iron-based amorphous and MAX phases, wherein the MAX phase content is 10 wt%; the iron-based amorphous comprises the following components by weight percentage: 26wt% Cr, 5wt% B, 3wt% Si, 3wt% Nb, 5wt% Ni, 10wt% Mo, the balance being Fe; the MAX phase is Ti 3 SiC 2 .
[0034] The preparation method of the iron-based amorphous, the application of the composite material in the coating and the construction method in this embodiment are all the same as those in Embodiment 1.
Embodiment 3
[0036] An iron-based amorphous / MAX phase composite material for piston rings, comprising iron-based amorphous and MAX phases, wherein the MAX phase content is 12 wt%; the iron-based amorphous comprises the following components by weight percentage: 26wt% Cr, 5wt% B, 3wt% Si, 3wt% Nb, 5wt% Ni, 10wt% Mo, the balance being Fe; the MAX phase is Ti 3 SiC 2 .
[0037] The preparation method of the iron-based amorphous, the application of the composite material in the coating and the construction method in this embodiment are all the same as those in Embodiment 1.
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Abstract
The invention discloses an iron-based amorphous / MAX phase composite material for a piston ring and a preparation method and application thereof, wherein the material includes 88-92 wt% iron-based amorphous and 8-12 wt% MAX phase; The iron-based amorphous contains the following components by weight percentage: 26wt%Cr, 5wt%B, 3wt%Si, 3wt%Nb, 5wt%Ni, 10wt%Mo, and the balance is Fe; the MAX phase is preferably Ti 3 SiC 2 . First, the raw materials for preparing iron-based amorphous are added to a vacuum air atomization furnace for smelting, atomization and powder screening, and then the iron-based amorphous powder and MAX phase are evenly mixed to obtain the iron-based amorphous / MAX phase composite material. The application of the iron-based amorphous / MAX phase composite material in the preparation of coatings for piston rings uses a supersonic flame spraying technology to prepare a protective coating with good wear resistance and anti-friction effect. The invention can obtain a composite coating with good bonding strength with the substrate, high hardness and excellent wear resistance, and has broad application prospects.
Description
technical field [0001] The invention belongs to the thermal spraying field of material processingengineering, and in particular relates to an iron-based amorphous / MAX phase composite material and a preparation method and application thereof. Background technique [0002] Under the background of continuous advocacy of "green, environmental protection, miniaturization and high efficiency" in the field of internal combustion engines, the service life and performance of engine parts are consistent and seek more excellent performance. Traditional components such as piston rings in the past can no longer meet the requirements of high performance, high wear resistance and low emission of the current engine. To meet the above performance and requirements, it is necessary to use high-performance alloy materials. These high-performance alloy materials are currently relatively expensive, and the resources of such alloys are also very scarce, which cannot meet the actual growing demand...
Claims
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