Laser ablation behavior and ablation threshold of entropy-controlled perovskite coatings

Authors

  • Shuo WANG Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China https://orcid.org/0009-0004-5913-8554
  • Junyang LU Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China
  • Mengqing ZHANG Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China
  • Jiayi ZHENG Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China https://orcid.org/0000-0002-3425-0353
  • Tong ZHANG Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China https://orcid.org/0009-0004-3971-8463

DOI:

https://doi.org/10.55713/jmmm.v35i4.2451

Keywords:

Laser ablation behavior, ablation threshold, high entropy, high reflectivity, low thermal conductivity

Abstract

The protection threshold of laser ablation resistant materials lags behind the development of laser power density. Single-functional laser ablation resistant materials can no longer meet the practical needs. High-entropy perovskites with infinite chemical composition, tunable bandgap structure, and efficient thermal management capabilities provide new ideas for developing novel high-reflectivity and low-thermal-conductivity multifunctional laser ablation resistant materials. Herein, leveraging these unique advantages of high-entropy perovskites in optics and thermodynamics, four entropy-controlled perovskite coatings, Ba(Zn1/2Ta1/2)O3 (BZTO), Ba(Zn1/3Ta1/3Nb1/3)O3 (BZTNO), Ba(Zn1/4Ta1/4Nb1/4Ti1/4)O3 (BZTNTO) and Ba(Zn1/5Ta1/5Nb1/5Ti1/5Zr1/5)O3 (BZTNTZO) are designed. Through time-dependent laser ablation experiments, the optical and thermal properties are comprehensively evaluated. And laser ablation behavior and ablation threshold are systematically studied. The BZTNO achieves thermal equilibrium at 1000 W∙cm‒2 and possesses longest ablation thresholds at different energy densities, demonstrates a superior thermal management performance. The optical reflectivity and the thermal expansion coefficient matching with the steel substrate make a major contribution to the excellent laser ablation resistant performance. The ablation thresholds of other entropy-controlled samples increase with entropy. This is attributed to the fact that the increase of cation disorder can effectively reduce the thermal conductivity. The designed entropy-controlled perovskite systems offer wide application prospect in laser ablation.

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Author Biographies

Shuo WANG, Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China

Shuo Wang is a postdoctoral in Research Institute of Chemical Defense, Beijing. She received her Ph.D. from Jilin University in 2021. Currently, she is mainly engaged in the preparation of functional ceramic materials and its application in the field of laser protection.

Junyang LU, Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China

Junyang Lu is a master's student at the  Chemical Defense Institute , mainly engaged in the preparation of functional ceramic materials and its application in the field of laser protection.

Mengqing ZHANG, Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China

Mengqing Zhang, graduated from the Army Armored Forces Academy in 2019, mainly engaged in the research of functional materials such as laser protection and electromagnetic shielding.

Jiayi ZHENG, Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China

Jiayi Zheng is an assistant researcher in Research Institute of Chemical Defense, Beijing. She graduated from Beijing Institute of Technology with a Ph.D. in 2021.  She mainly devoted to the research work of photoelectric countermeasure materials such as hyperspectral camouflage stealth, laser protection, electromagnetic shielding.

Tong ZHANG, Chemical Defense Institute, Yangfang town, Changping district, Beijing, 102205, P.R. China

Tong Zhang is a researcher at National University of Defense Technology. He obtained his Ph.D. from the National University of Defense Technology in 2010. His current research focuses on optoelectronic countermeasure materials.

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Published

2025-10-21

How to Cite

[1]
S. . WANG, J. LU, M. ZHANG, J. ZHENG, and T. ZHANG, “Laser ablation behavior and ablation threshold of entropy-controlled perovskite coatings”, J Met Mater Miner, vol. 35, no. 4, p. e2451, Oct. 2025.

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