The present invention relates to a method for protecting surfaces of components against cavitation erosion and components provided with such cavitation protection surfaces, wherein in the surface a plurality of microcavities is provided which entrap gas such as air; the gas, air, entrapped inside the microcavities expands in the vicinity of cavitation bubbles, forming a gas cushion layer that directs cavitation jets away from the surface, thereby protecting the surface against cavitation erosion; the cavitation having a reentrant or double reentrant inlet design with typical T-shape and T-shape profile.

    本发明涉及一种用于防护部件表面抵抗空化侵蚀的方法和具有这种空化防护表面的部件,其中在表面中提供多个微空腔,其捕获气体如空气;捕获在微空腔内的气体,空气在空化气泡附近膨胀,形成气垫层,其引导空化射流远离表面,从而防护表面抵抗空化侵蚀;空化具有典型T形和T形轮廓的凹陷或双凹陷入口设计。


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    Title :

    SURFACE PROTECTION AGAINST CAVITATION EROSION


    Additional title:

    抵抗空化侵蚀的表面防护



    Publication date :

    2021-12-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL



    SURFACE PROTECTION AGAINST CAVITATION EROSION

    OHL CLAUS-DIETER / GONZALEZ-AVILA SILVESTRE ROBERTO / NGUYEN DANG MINH et al. | European Patent Office | 2022

    Free access

    SURFACE PROTECTION AGAINST CAVITATION EROSION

    OHL CLAUS-DIETER / GONZALEZ-AVILA SILVESTRE ROBERTO / NGUYEN DANG MINH et al. | European Patent Office | 2020

    Free access

    SURFACE PROTECTION AGAINST CAVITATION EROSION

    OHL CLAUS-DIETER / GONZALEZ-AVILA SILVESTRE ROBERTO / NGUYEN DANG MINH et al. | European Patent Office | 2022

    Free access

    Cavitation erosion prediction using a “soft surface”

    Kadoi, Hiroyuki / Sasajima, Takao | IOS Press | 1978


    Study of cavitation erosion

    Trock, B. | Engineering Index Backfile | 1956