Ab'/> Experimental study of high velocity oxy-fuel sprayed WC-17Co coatings applied on complex geometries. Part B: Influence of kinematic spray parameters on microstructure, phase composition and decarburization of the coatings
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首页> 外文期刊>Surface & Coatings Technology >Experimental study of high velocity oxy-fuel sprayed WC-17Co coatings applied on complex geometries. Part B: Influence of kinematic spray parameters on microstructure, phase composition and decarburization of the coatings
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Experimental study of high velocity oxy-fuel sprayed WC-17Co coatings applied on complex geometries. Part B: Influence of kinematic spray parameters on microstructure, phase composition and decarburization of the coatings

机译：高速氧燃料喷涂WC-17CO涂层在复杂几何形状上的实验研究。 B部分：运动喷雾参数对涂层微观结构，相组成和脱碳的影响

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AbstractThe aim of this study is to evaluate comprehensively the effect of spray angle, spray distance and gun traverse speed on the microstructure and phase composition of HVOF sprayed WC-17 coatings. An experimental setup that enables the isolation of each one of the kinematic parameters and the systemic study of their interplay is employed. A mechanism of particle partition and WC-cluster rebounding at short distances and oblique spray angles is proposed. It is revealed that small angle inclinations benefit notably the WC distribution in the coatings sprayed at long stand-off distances. Gun traverse speed, affects the oxygen content in the coating via cumulative superficial oxide scales formed on the as-sprayed coating surface during deposition. Metallic W continuous rims are seen to engulf small splats, suggesting crystallization that occurred in-flight.Highlights?WC-cluster rebounding mechanism at short spray distances and oblique angles is proposed.?Small spray angle inclination benefits WC distribution in long spray distances.?Positive correlation of gun traverse speed and oxygen content in the coatings.?Strong indications that metallic W crystallization occurs in-flight.]]>
机译：<！[cdata [ 抽象 本研究的目的是全面评估喷射角度，喷射距离和枪横向速度的效果HVOF喷涂WC-17涂层的微观结构和相组合物。采用实验设置，使能够隔离每个运动学参数和它们的相互作用的系统研究。提出了一种在短距离和倾斜喷射角度下反弹的粒子隔板和WC-簇反弹的机制。据透露，小角度倾斜度尤其有利于涂层中的涂层中的WC分布，其在长的脱扣距离下喷涂。枪横向速度，通过在沉积期间通过在喷涂涂层表面上形成的累积浅表氧化物鳞片影响涂层中的氧含量。可以看到金属W连续轮辋被吞噬小Splats，表明在飞行中发生的结晶。 突出显示 ？ < CE：PARA ID =“P0005”查看=“全部”> WC集群反弹机制在短喷雾距离和倾斜角度。 ？ 小喷射角度倾斜使WC分布在长喷雾距离中的WC分布。 ？ 正相关的正相关枪横向速度和氧气竞争在涂料中。 ？ 在飞行中发生金属W结晶的强烈迹象。 ]]>

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