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Enhancing the cavitation erosion resistance of D8m-Ta5Si3 nanocrystalline coatings through Al alloying.
Xu, Jiang; Liu, Wei; Jiang, Shuyun; Munroe, Paul; Xie, Zong-Han.
Afiliación
  • Xu J; Department of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, PR China. Electronic address: xujiang73@nuaa.edu.cn.
  • Liu W; Department of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, PR China.
  • Jiang S; Department of Mechanical Engineering, Southeast University, 2 Si Pai Lou, Nanjing 210096, PR China.
  • Munroe P; School of Materials Science and Engineering, University of New South Wales, NSW 2052, Australia.
  • Xie ZH; School of Mechanical & Electrical Engineering, Wuhan Institute of Technology,693 Xiongchu Avenue, Wuhan 430073, PR China; School of Mechanical Engineering, University of Adelaide, SA 5005, Australia.
Ultrason Sonochem ; 50: 138-156, 2019 Jan.
Article en En | MEDLINE | ID: mdl-30219353
To investigate the effects of Al alloying on the erosion-corrosion resistance of ß-Ta5Si3, both a ß-Ta5Si3 coating and an Al-alloyed ß-Ta5(Si0.83Al0.17)3 coating were synthesized on a 316 substrate by the double cathode glow discharge technique. The phase constitution, composition and microstructure of the two coatings were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The two coatings were composed of nearly rounded D8m-ß-Ta5Si3 grains with an average size of ∼4 nm, and after the addition of Al, the preferred growth orientation for the ß-Ta5Si3 coating changed from (4 0 0) to (0 0 2). The hardness, elastic modulus and contact damage resistance of the coatings were measured using a nanoindentation tester. The results showed that Al alloying improved the contact damage resistance of ß-Ta5Si3 with only a slight decrease in hardness. The erosion-corrosion behavior of the two coatings was performed in a 3.5 wt% NaCl solution containing a 12 wt% concentration of silica sand under two phase slurry flow condition and in a 3.5 wt% NaCl solution under ultrasonic cavitation erosion conditions. This revealed that the Al alloyed ß-Ta5Si3 has a higher resistance to both erosion-corrosion and ultrasonic cavitation erosion as compared to the binary ß-Ta5Si3 coating.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ultrason Sonochem Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2019 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ultrason Sonochem Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2019 Tipo del documento: Article Pais de publicación: Países Bajos