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Tribology Letters
Erschienen in: Tribology Letters 2/2012

01.05.2012 | Original Paper

Influence of Heat Treatment on Microstructure and Sliding Wear of Thermally Sprayed Fe-Based Metallic Glass Coatings

verfasst von: Guang Liu, Yulong An, Jianmin Chen, Guoliang Hou, Jie Chen

Erschienen in: Tribology Letters | Ausgabe 2/2012

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Abstract

Fe62Ni3Cr4Mo2W3Si6B17C3 amorphous coatings were thermally sprayed by a high velocity oxygen fuel spraying system (DJ-2700) and heat-treated at the temperatures ranges from 873 to 1,173 K in vacuum for 1 h. Differential scanning calorimetry, X-ray diffraction (XRD), and scanning electron microscopy were used to study the microstructural characteristics of the coatings. Vickers hardness tester was used to measure the hardness of the coatings. At the same time, the sliding wear behavior of the coatings was evaluated in a reciprocating ball-on-disk system. Within the resolution of XRD, amorphous structure without apparent crystalline phases was obtained in the as-sprayed coating. The heat treatments above 873 K led to the crystallization of amorphous phase. With the increase of heat treatment temperature, diffusion and sintering could occur between the layers of the coatings. The highest microhardness was obtained in the coating heat-treated at 973 K. When wear tested at a relative low load of 2 N, a direct correlation between the hardness and wear resistance of the coatings seems to be reasonable. However, at relative high loads, the wear resistance of the coatings is dependent on the resistance to crack initiation and growth between the layers rather than the hardness.
Vorheriger Artikel The Effect of Weathering on Tribological Properties of an Acrylic Melamine Automotive Nanocomposite
Nächster Artikel Demonstration of a New Technique Using Radioisotope Tracers to Measure the Backside Wear Rate on Tibial Inserts

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Metadaten
Titel
Influence of Heat Treatment on Microstructure and Sliding Wear of Thermally Sprayed Fe-Based Metallic Glass Coatings
verfasst von
Guang Liu
Yulong An
Jianmin Chen
Guoliang Hou
Jie Chen
Publikationsdatum
01.05.2012
Verlag
Springer US
Erschienen in
Tribology Letters / Ausgabe 2/2012
Print ISSN: 1023-8883
Elektronische ISSN: 1573-2711
DOI
https://doi.org/10.1007/s11249-012-9929-4

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