Modulation periods and ratios induced changes of microstructure and mechanical properties of AlN/ZrB2 multilayered coatings

Li, D.J.; Wang, H.; Kang, Y.B.; Dong, Lei; Liu, G.Q.; Gong, Jie; Sun, Yi; Deng, Xiangyun

doi:10.1016/j.vacuum.2009.05.002

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…Since W and ZrB 2 have different crystal structures, smooth interfaces with low atomic intermixing of both individual nanolayers might be obtained to preserve desired mechanical properties under extreme conditions. In previous studies, some researchers and our group gained some insight into the relationship between growth parameters and the microstructures and mechanical properties of ZrB 2 or ZrN-based multilayers [7][8][9][10][11]. However, little reports on ZrB 2 /W nanoscale multilayers can be found in the literature.…”

Section: Introductionmentioning

confidence: 99%

The effects of modulation period, modulation ratio, and deposition temperature on microstructure and mechanical properties of ZrB2/W multilayers

Liu

Tan

Liu

et al. 2010

Sci. China Technol. Sci.

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Monolithic ZrB 2 , W coatings and ZrB 2 /W multilayers with different modulation periods and modulation ratios were synthesized by ion beam assisted deposition at room temperature and 400°C. X-ray diffraction (XRD), scanning electron microscopy (SEM), surface profiler, and nanoindention were employed to investigate the influences of the deposition temperature and the modulation period on the growth, textures, interface structure, and mechanical properties of the multilayers. The results indicated that the multilayer with modulation period of 13 nm synthesized at room temperature possessed a higher hardness of 23.8 GPa. Deposition temperature gave a significant contribution to mechanical property enhancement. The 400°C-deposition temperature led to a maximum hardness and elastic modulus value of 32.1 and 399.1 GPa for ZrB 2 /W multilayer with a modulation period of 6.7 nm. Its critical load increased to 42.8 mN and residual stress decreased to 0.7 GPa. A higher deposition temperature can cause an increase in interfacial atomic mixture and mobility of surface species, which induceds an increase in areal atomic density and dislocation pinning. These results as well as small nanoscale grain sizes should be related to hardness increase.ion beam assisted deposition, nanoscale multilayers, modulation period, modulation ratio, deposition temperature, hardness Citation:Liu M Y, Tan M, Liu G Q, et al. The effects of modulation period, modulation ratio, and deposition temperature on microstructure and mechanical properties of ZrB 2 /W multilayers.

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Section: Introductionmentioning

confidence: 99%

The effects of modulation period, modulation ratio, and deposition temperature on microstructure and mechanical properties of ZrB2/W multilayers

Liu

Tan

Liu

et al. 2010

Sci. China Technol. Sci.

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Ar+ or N+ bombardment induced the microstructure and mechanical properties of ZrB2/W and ZrB2/WNx superlattice coatings prepared by IBAD

Tan

Wang

Zhang

et al. 2013

Surface and Coatings Technology

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Processing of ZrB2- and HfB2-Based Ultra-High Temperature Ceramic Materials: A Review

Sonber

Murthy

Majumdar

et al. 2021

Materials Performance and Characterization

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ZrB2 and HfB2 are leading materials in the category of ultra-high temperature ceramics (UHTCs). UHTCs are a group of ceramic materials that can withstand ultra-high temperature (>2,000°C) in oxidizing conditions. Such a high temperature will be encountered by future hypersonic reentry vehicles. Future reentry vehicles will have sharp edges to improve aerodynamic performance. The sharp leading edges will cause higher surface temperature than that of the actual blunt-edged vehicles. The sharp edges have less surface area to dissipate heat and thus the temperature gets increased. To withstand the intense heat generated when these vehicles reenter the earth’s upper atmosphere, UHTC materials are needed. UHTC materials are composed of borides of early transition metals. From the larger list of borides, ZrB2 and HfB2 have received the most attention as potential candidates for leading edge materials because their oxidation resistance is superior to that of other borides because of the stability of the ZrO2 and HfO2 scales that form on these materials at elevated temperatures in oxidizing environments. Processing of these materials is very difficult because these materials are very refractory in nature. Powder synthesis usually involves high-temperature solid state reactions. Dense bodies are generally produced by hot pressing and spark plasma sintering. For coating preparation, plasma spray, chemical vapor deposition, and physical vapor deposition is used. All these processing methods for ZrB2 and HfB2 are difficult because of the involvement of very high temperatures. In this review, the present state of the knowledge on processes employed for powder synthesis, fabrication of dense bodies, and coating processes is discussed. The advantages, limitations, and challenges in the different processing methods are addressed.

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Modulation periods and ratios induced changes of microstructure and mechanical properties of AlN/ZrB2 multilayered coatings

Cited by 3 publications

References 15 publications

The effects of modulation period, modulation ratio, and deposition temperature on microstructure and mechanical properties of ZrB2/W multilayers

The effects of modulation period, modulation ratio, and deposition temperature on microstructure and mechanical properties of ZrB2/W multilayers

Ar+ or N+ bombardment induced the microstructure and mechanical properties of ZrB2/W and ZrB2/WNx superlattice coatings prepared by IBAD

Processing of ZrB2- and HfB2-Based Ultra-High Temperature Ceramic Materials: A Review

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