A kind of high temperature resistant and anti-ablation alloy

A technology of anti-ablation and high temperature resistance, applied in the field of alloys, can solve the problems of unstable preparation process of precursors, limited range of substrate selection, research on other parameters of coatings, etc., to achieve good high temperature resistance, low cost, and quality assurance.

Active Publication Date: 2020-08-18
SOUTHWEAT UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

However, in this method, the precursor is unstable and the preparation process is more complicated; in addition, the experiment only prepared the coating, discussed the influence of process parameters on the coating, and did not study other parameters of the coating; further, the deposition experiment The temperature is too high, limiting the choice of substrates

Method used

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  • A kind of high temperature resistant and anti-ablation alloy
  • A kind of high temperature resistant and anti-ablation alloy

Examples

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Embodiment 1

[0038] The alloy prepared in this example includes a metal substrate, a Ni-B composite coating, and a Re-Co alloy coating. The substrate alloy is 0CrNi2MoVA steel, and the preparation process is as follows.

[0039] (1) A Ni-B composite coating is placed on the metal substrate by electroless plating to form a metal substrate with a Ni-B composite coating on the surface.

[0040] (2) Secondly, a Re-Co alloy coating was placed on the metal substrate with a Ni-B composite coating on the surface by chemical vapor deposition, as follows.

[0041] The equipment used in chemical vapor deposition in this embodiment includes a sublimation unit, a first reaction gas generator, a second reaction gas generator, a reactor, a third reaction gas generator, a pipeline unit, a vacuum unit, and a control system.

[0042] Wherein, the sublimation unit includes a sublimation chamber and a first electric heating device for heating the sublimation chamber. In this embodiment, there are two sublima...

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Abstract

The invention discloses a high-temperature-resisting burning erosion resistance alloy, and belongs to the field of alloy preparing. The problems that at present, an eletrodeposited chromium layer is commonly adopted to serve as high-temperature burning erosion resistance coatings of a rapid fire weapon, an artillery pipe and the like, in the chromium plating process of the eletrodeposited chromiumlayer, crystal transfer from hexagonal crystals to cubic crystals happens, the chromium layer is full of micro cracks, peeling is prone to happening, toxic substances need to be used, and certain harm is caused to the environment can be solved. The high-temperature-resisting burning erosion resistance alloy comprises a metallic matrix, an Ni-B composite coating, and an Re-Co alloy coating. The Ni-B composite coating serves as the transition layer of the alloy, the chemical vapor deposition is adopted to deposite the Re-Co alloy coating on the surface of the Ni-B composite coating, the prepared alloy has the good high-temperature-resisting and burning erosion resistance properties. Meanwhile, on the basis of the structural improvement, the phenomenon that during alloy coating preparing, Cimpurities are combined with the metallic matrix is effectively avoided, the coating and the alloy have the extremely good combination force, and cracks, peeling and the like are avoided.

Description

technical field [0001] The invention relates to the field of alloys, especially the field of alloy preparation, in particular to a high-temperature-resistant and ablation-resistant alloy. Background technique [0002] Rapid-fire weapons, artillery barrels, and propellant exhaust gas will undergo high-temperature ablation under the action of heat, chemistry, and mechanics. Therefore, it is necessary to arrange high-temperature ablation-resistant coatings on rapid-fire weapons and artillery barrels. At present, the electroplating chromium layer is the main technical means to solve the barrel ablation problem for a long time. However, during the chrome-plating process of the existing electroplated chrome layer, the crystal form transformation from hexagonal crystal to cubic crystal will occur, so that the chromium layer is full of microcracks and is easy to peel off. [0003] In addition, in the process of electroplating chromium, it is necessary to use toxic hexavalent chrom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/02C23C18/32C23C16/16C23C16/18
Inventor 龚伟李华敬瑀王恩泽王丽阁朱黎明
Owner SOUTHWEAT UNIV OF SCI & TECH
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