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Author:

Yao, H.H. (Yao, H.H..) | Zhou, Z. (Zhou, Z..) (Scholars:周正) | Tang, K.Z. (Tang, K.Z..) | Tan, Z. (Tan, Z..) | Wang, G.H. (Wang, G.H..) | He, D.Y. (He, D.Y..) (Scholars:贺定勇)

Indexed by:

EI Scopus

Abstract:

To manufacture a protective coating with low thermal conductivity and good frictional wear performance, a Fe59Cr12NbsB20Si4 was designed and produced to prepare coating by High velocity oxygen fuel (HVOF) spraying, in comparison with commercially stain steel AlSl 316L coating. Both as-deposited coatings exhibit dense layered structure with the porosity below 1% and slight oxidation. The microstructure of Fe-based coating composes of amorphous matrix and some precipitated nanocrystals, resulting in the thermal conductivity of designed Fe-based coating (2.66 W/mK) is significantly lower than that of stain steel coating 316L(5.87 W/mK). Depending on the structure advantage, the Fe-based coating exhibits higher microhardness, reaching to 1258±92 HV. The friction coefficient and wear rate of Fe-based coating display an increase at 200'C followed by a decrease at 400°C determined by the evolution of wear mechanism at different temperature. The dominant wear mechanism of Fe-based coating at room temperature is fatigue wear accompanying with oxidative wear. At 200°C, due to the existence of 'third body' abrasive wear, the wear process was accelerated. The large-area oxide layer is supposedly responsible for the decrease of friction of the coating at 400°C. © Copyright 2017 by DVS Media GmbH. All rights reserved.

Keyword:

Tribology Austenitic stainless steel Wear of materials Sprayed coatings Friction Microstructure Thermal conductivity HVOF thermal spraying Protective coatings

Author Community:

  • [ 1 ] [Yao, H.H.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
  • [ 2 ] [Zhou, Z.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
  • [ 3 ] [Tang, K.Z.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
  • [ 4 ] [Tan, Z.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
  • [ 5 ] [Wang, G.H.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
  • [ 6 ] [He, D.Y.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, China

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Year: 2017

Volume: 2

Page: 730-736

Language: English

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

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