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<p>The article analyzes the results of studying a&#xa0;promising method for obtaining functionally graded 3D materials based on the use of the “cold” gas-dynamic mono-powder spraying technology in a&#xa0;separate dispenser system. In particular, for Al–Al<sub>2</sub>O<sub>3</sub> composite, the effect of the ceramic component content on the coefficient of linear thermal expansion was determined. The study results can be used when designing and creating materials operating in thermally-stressed assemblies to reduce stresses by adjusting thermal gaps. The obtained data highlight the advantages of the “cold” spraying method as a&#xa0;progressive way to create 3D metal and metal-ceramic materials with a&#xa0;functionally graded structure. Future development of these findings requires further scientific and technical justification.</p>

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Investigation of aspects of compensation for thermal expansion of 3D gradient materials Al–Al2O3 using “cold” spraying technology

  • 期刊论文

  • 发表日期：

    2025年8月4日

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  • E. Yu. Gerashchenkova,
  • M. A. Markov,
  • D. A. Gerashchenkov,
  • R. Yu. Bystrov,
  • A. D. Bykova,
  • A. D. Kashtanov

摘要

The article analyzes the results of studying a promising method for obtaining functionally graded 3D materials based on the use of the “cold” gas-dynamic mono-powder spraying technology in a separate dispenser system. In particular, for Al–Al2O3 composite, the effect of the ceramic component content on the coefficient of linear thermal expansion was determined. The study results can be used when designing and creating materials operating in thermally-stressed assemblies to reduce stresses by adjusting thermal gaps. The obtained data highlight the advantages of the “cold” spraying method as a progressive way to create 3D metal and metal-ceramic materials with a functionally graded structure. Future development of these findings requires further scientific and technical justification.