一种金属氧化物弥散强化涂层及其制备方法

By depositing a metal thin film on the surface of a directionally solidified high-temperature alloy substrate and then performing micro-laser shock strengthening, a metal oxide dispersion-strengthened coating with interface-free metallurgical bonding is formed. This solves the problems of insufficient coating adhesion and directional damage, improves hardness and fatigue resistance, and extends fretting fatigue life.

CN122105317BActive Publication Date: 2026-07-17XI'AN PETROLEUM UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI'AN PETROLEUM UNIVERSITY
Filing Date
2026-04-30
Publication Date
2026-07-17

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Abstract

本发明公开了一种金属氧化物弥散强化涂层及其制备方法，属于金属表面强化技术领域，所述方法包括：在定向凝固高温合金基体的表面沉积金属薄膜；随后以水为约束层，对沉积金属薄膜后的定向凝固高温合金基体表面进行微激光冲击，使得金属薄膜和定向凝固高温合金基体表面发生重熔，并使得水中的氧元素与重熔后的金属薄膜中的金属发生原位反应，最终形成与定向凝固高温合金基体无界面冶金结合且与定向凝固高温合金基体晶体取向保持一致的金属氧化物弥散强化涂层，从根本上解决了传统外加涂层结合力不足、易剥落、破坏定向凝固高温合金定向性的缺点。
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