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本文研究了等离子喷涂ZrO_2陶瓷层的激光再熔化处理经激光再熔化处理的ZrO_2涂层致密、无孔隙,但熔化层有裂纹在ZrO_2中添加适量的SiO_2,降低了熔化层在冷却时的热应力,有效抑制裂纹的产生经激光再熔化处理后的陶瓷展和粘结层之间的结合为冶金结合;粘结尾和基材的冶金结合层厚度明显增加;随着激光功率的增加,陶瓷层、粘结层以及一定厚度的基材发生熔化,陶瓷层和粘结层之间产生Zr_6Fe_3O反应相
In this paper, the laser remelting process of plasma sprayed ZrO 2 ceramic layer is studied. The laser remelted ZrO 2 coating is dense and non-porous, but the crack in the melt layer adds a proper amount of SiO 2 to ZrO 2 to reduce the thermal stress , Effectively inhibit the generation of cracks after laser remelting ceramic exhibition and the bond between the bond is metallurgical bonding; adhesion tail and the substrate metallurgical bonding layer thickness increased significantly; with the laser power increases, the ceramic layer , The bonding layer and a certain thickness of the substrate melts, the ceramic layer and the adhesive layer between the Zr_6Fe_3O reaction phase