Atomic diffusion induced degradation in bimetallic layer coated cemented tungsten carbide

Cited 4 time in webofscience Cited 0 time in scopus
  • Hit : 186
  • Download : 181
We investigated the temporal degradation of glass moulding dies, made of cemented tungsten carbide coated with PtIr on an adhesive Cr or Ni interlayer, by electron microscopy and atom probe tomography. During the exposure treatments at 630 degrees C under an oxygen partial pressure of 1.12 x 10(-23) bar, Cr (Ni) was found to diffuse outwards via grain boundaries in the PtIr, altering the surface morphology. Upon dissolution of the interlayer, the WC substrate also started degrading. Extensive interdiffusion processes involving PtIr, Cr (Ni) and WC took place, leading to the formation of intermetallic phases and voids, deteriorating the adhesion of the coating. (C) 2017 The Authors. Published by Elsevier Ltd.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2017-05
Language
English
Article Type
Article
Keywords

LOW-TEMPERATURE DIFFUSION; THIN-FILM INTERACTIONS; COMPOUND FORMATION; PROBE TOMOGRAPHY; ADHESION LAYERS; THERMAL-STABILITY; FAILURE-MECHANISM; VOID FORMATION; HARD COATINGS; GOLD LAYERS

Citation

CORROSION SCIENCE, v.120, pp.1 - 13

ISSN
0010-938X
DOI
10.1016/j.corsci.2017.01.007
URI
http://hdl.handle.net/10203/224093
Appears in Collection
MS-Journal Papers(저널논문)
Files in This Item
000401378100001.pdf(7.12 MB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 4 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0