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INVESTIGATION OF BONDING MECHANISM BETWEEN PLASMA SPRAYED Al2O3 TOP COATING AND Ti-Al UNDERCOATING ON STEEL SUBSTRATE

机译:钢基板上血浆喷涂Al2O3顶层涂层与钢基底底涂层粘接机理研究

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摘要

Bonding mechanism of plasma sprayed Al2O3 top coating onto Ti-Al undercoating made with Ti and Al mixed powders on mild steel substrate was investigated by measuring adhesive strength and observing fractured surfaces of the dual coating system in comparison with single phase undercoatings of Ti or Al. The Ti-Al coating consisted of Al phase and Ti compound phases, but its surface layer was composed mainly of Al splats covered with thin oxide layer of Al2O. The Al2O3 top coating would bond to the Ti-Al undercoating by mechanical anchoring effect.
机译:通过测量粘合强度和观察双涂层系统的双涂层系统的粘合强度和观察双涂层系统的粘合剂涂覆在双涂层底涂层上的粘合机制,并与双涂层系统的骨折,与Ti或Al的单相底涂层相比,研究了双涂层制备的Ti-Al混合粉末。 Ti-Al涂层由Al相和Ti复合相组成,但其表面层主要由Al Splats覆盖着薄氧化物层的Al2O。 Al 2 O 3顶部涂层将通过机械锚定效应粘合到钛涂层。

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