一种钽钨合金表面的高温抗氧化涂层及其制备方法

By preparing a dual-layer structure of an interface fusion layer and a self-healing functional layer on the surface of a tantalum-tungsten alloy, the problem of poor erosion and wear resistance of existing coatings at ultra-high temperatures is solved, achieving a strong bond between the coating and the substrate and high-temperature oxidation resistance, making it suitable for extreme environments such as aerospace engine combustion chambers and nozzles.

CN122038968BActive Publication Date: 2026-07-17BAOJI HENGYE NONFERROUS METAL TECH CO LTD
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Patent Information

Application Number
CN202610491599.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-04-15
Publication Date
2026-07-17
Estimated Expiration
2046-04-15

AI Technical Summary

Technical Problem

Existing coatings on tantalum-tungsten alloy surfaces exhibit poor resistance to erosion and wear under ultra-high temperature and complex thermal cycling conditions, leading to rapid coating thinning and structural failure, and failing to effectively protect the substrate.

Method used

The material adopts a dual-layer structure consisting of an interface fusion layer and a self-healing functional layer. The interface fusion layer is a metallurgical combination of a Ta-W-Re-Ti-B pentagonal solid solution system and a tantalum-tungsten alloy matrix. The self-healing functional layer is composed of a ZrB2-HfB2-TaB2 ternary boride and a TiC-SiC reinforcing phase. It combines rare earth composite oxides and modified glass phases to form a high-hardness, high-toughness, and erosion-resistant structure, and fills microcracks through a self-healing mechanism.

Benefits of technology

It significantly improves the coating's erosion resistance and oxidation resistance, is suitable for ultra-high temperature gas erosion conditions, ensures a strong bond and good thermal compatibility between the coating and the substrate, and extends the service life of tantalum-tungsten alloy components.

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Abstract

本申请属于新材料学科中合金涂层制备技术领域，具体涉及一种钽钨合金表面的高温抗氧化涂层及其制备方法，其钽钨合金表面的高温抗氧化涂层包括界面融合层和自愈合功能层，界面融合层原料包括：Ta粉、W粉、Re粉、Ti粉和B粉；自愈合功能层原料包括：ZrB2粉、HfB2粉、TaB2粉、TiC粉、SiC粉、Y2O3粉、La2O3粉、CeO2粉、钇掺杂氧化锆和改性玻璃相前驱体；改性玻璃相前驱体为B‑Si‑Al‑Zr玻璃相前驱体经ZrO2包覆改性得到；其高温抗氧化涂层在超高温和复杂热循环工况下具有优异的抗冲蚀磨损性，能够为钽钨合金提供稳定、持久的抗氧化防护；其设计原理科学可靠，制备工艺简单，涂层稳定与防护功能强，应用环境友好。
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Citation Information

Patent Citations

  • Preparation method of composite alloy coating on tantalum-tungsten alloy

    CN104831268B

  • Highly heat-resistant reflection film and laminated body, reflection plate for liquid crystal display element and glass as building material using the film

    JP2002129259A

  • SPUTTERING TARGET, Ta-W ALLOY FILM USING THE SAME, AND LIQUID CRYSTAL DISPLAY DEVICE

    JP2011058078A