In Situ Visualization of Impacting Phenomena of Plasma-Sprayed Zirconia: From Single Splat to Coating Formation
In Situ Visualization of Impacting Phenomena of Plasma-Sprayed Zirconia: From Single Splat to Coating Formation
复制标题
等离子喷涂氧化锆冲击现象的原位可视化：从单一溅射到涂层形成
DOI：
10.1007/s11666-008-9221-1
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发表时间：
2008
影响因子：
3.1
通讯作者：
S. Oki
中科院分区：
文献类型：
--
作者：
K. Shinoda;H. Murakami;S. Kuroda;K. Takehara;S. Oki
作者研制了一套大气直流等离子喷涂条件下粒子碰撞的现场监测系统。该系统利用高速摄像机和远距离显微镜，能够以每秒一百万帧的速度捕捉粒子撞击现象。为了理解涂层形成机理，尝试了两种方法，即，观察单个飞溅形成和随后的涂层形成。在前一种情况下，钇稳定氧化锆（YSZ）液滴撞击在基板上的变形和冷却过程被成功地捕获。在后一种情况下，多液滴撞击现象被观察到作为一个整体治疗。代表的涂层过程中，塔的形成（0维）和珠的形成（1维）下观察到典型的等离子喷涂条件下的热障涂层使用的触发系统，再加上一个机器人的运动。获得的图像清楚地显示了单个飞溅物整合产生的涂层形成。
The authors have developed an in situ monitoring system for particle impacts under atmospheric dc plasma spraying conditions. This system utilized a high-speed video camera coupled with a long-distance microscope, and was capable of capturing the particle-impinging phenomena at one million frames per second. To understand the coating formation mechanism, two approaches were attempted, i.e., observation of the single splat formation and the subsequent coating formation. In the former case, the deformation and cooling processes of yttria-stabilized zirconia (YSZ) droplets impinging on substrates were successfully captured. In the latter case, multiple-droplet-impacting phenomena were observed as an ensemble treatment. Representing the coating process, the tower formation (0-dimensional) and bead formation (1-dimensional) were observed under typical plasma spray conditions for thermal barrier coatings using a triggering system coupled with the motion of a robot. The obtained images clearly showed the coating formation resulting from the integration of single splats.