fig1
![Study on the performance of lead zirconate titanate piezoelectric coating prepared by vacuum cold spraying](https://image.oaes.cc/d904b0f6-b3a8-4cb1-b5f5-941af0f43e0a/gmo1005.fig.1.jpg)
Figure 1. SEM of powder (A) and (B) before ball milling; (C) and (D) after ball milling. SEM: Scanning electron microscopy.
Figure 1. SEM of powder (A) and (B) before ball milling; (C) and (D) after ball milling. SEM: Scanning electron microscopy.
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