Microstructure Evolution of ZrO<sub>2</sub> Particle During Manufacture of ZrO<sub>2p</sub>Thermal Barrier Coating by Laser Melt Injection

Shougang Lin; Xixi Guo; Hao Chen; Hang Zhang; Jing Lai; Dejian Liu

doi:10.3788/CJL201946.0802004

Chinese Journal of Lasers, Volume. 46, Issue 8, 0802004(2019)

Microstructure Evolution of ZrO₂ Particle During Manufacture of ZrO_2pThermal Barrier Coating by Laser Melt Injection

Shougang Lin^*, Xixi Guo, Hao Chen, Hang Zhang, Jing Lai, and Dejian Liu^*

Author Affiliations

School of Materials Science and Engineering, Huazhong University of Science and Technology,Wuhan, Hubei 430074, China

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Figures & Tables(10)

Fig. 1. Morphologies of origin ZrO2 particles under different resolution. (a) Low resolution; (b) high resolution

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Fig. 2. Diagram of laser melt injection[14]

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Fig. 3. Cross-section morphologies of thermal-resistant coating. (a) Overall morphology; (b) upper middle part; (c) lower part

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$Diffraction band contrast figures of ZrO2 particle before and after laser melt injection. (a) Before laser melt injection; (b) after laser melt injection$

Fig. 4. Diffraction band contrast figures of ZrO2 particle before and after laser melt injection. (a) Before laser melt injection; (b) after laser melt injection

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$Morphology of ZrO2 particle in fracture of thermal-resistant coating$

Fig. 5. Morphology of ZrO2 particle in fracture of thermal-resistant coating

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Fig. 6. XRD patterns. (a) Original ZrO2 particle; (b) thermal-resistant coating

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$Transformation of ZrO2 phases. (a) Statistic chart of fractions (area) of four phases; (b) phase distribution of original ZrO2 particle; (c) phase distribution of ZrO2 particle after LMI$

Fig. 7. Transformation of ZrO2 phases. (a) Statistic chart of fractions (area) of four phases; (b) phase distribution of original ZrO2 particle; (c) phase distribution of ZrO2 particle after LMI

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$Local zoom map of ZrO2 particle in thermal barrier coating. (a) Diffraction band contrast; (b) phase distribution; (c) orientation distribution$

Fig. 8. Local zoom map of ZrO2 particle in thermal barrier coating. (a) Diffraction band contrast; (b) phase distribution; (c) orientation distribution

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$Statistic chart of diffraction band contrast of ZrO2 particle$

Fig. 9. Statistic chart of diffraction band contrast of ZrO2 particle

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Table 1. Chemical composition of ZrO2 particles
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Table 1. Chemical composition of ZrO2 particles
Composition CaO ZnO MgO HfO₂ Y₂O₃ ZrO₂
Molefraction /% ≤0.01 ≤0.01 0.01 1.05 5.73 93.22

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Shougang Lin, Xixi Guo, Hao Chen, Hang Zhang, Jing Lai, Dejian Liu. Microstructure Evolution of ZrO₂ Particle During Manufacture of ZrO_2pThermal Barrier Coating by Laser Melt Injection[J]. Chinese Journal of Lasers, 2019, 46(8): 0802004

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