Publication detail

Defects in the surface layer of pure molybdenum after WEDM

MOURALOVÁ, K. BENEŠ, L. ZAHRADNÍČEK, R.

Original Title

Defects in the surface layer of pure molybdenum after WEDM

English Title

Defects in the surface layer of pure molybdenum after WEDM

Type

journal article in Scopus

Language

en

Original Abstract

The utilisation of pure molybdenum in high-temperature applications in a vacuum requires very precise machining. Considering the fact that conventional machining methods do not achieve the required geometrical and dimensional accuracy in several cases, it is necessary to use the unconventional technology of wire electrical discharge machining (WEDM). This study aims at analysing the surface and subsurface layer of pure molybdenum after WEDM in terms of the occurrence of defects. Profile and areal parameters were evaluated by means of a contact 3D profilometer. The occurrence of individual defects both on the surface and underneath it was studied by means of the methods of electron microscopy and focused ion beam (FIB). Furthermore, the local chemical composition of the surface of the workpiece (EDX) was determined.

English abstract

The utilisation of pure molybdenum in high-temperature applications in a vacuum requires very precise machining. Considering the fact that conventional machining methods do not achieve the required geometrical and dimensional accuracy in several cases, it is necessary to use the unconventional technology of wire electrical discharge machining (WEDM). This study aims at analysing the surface and subsurface layer of pure molybdenum after WEDM in terms of the occurrence of defects. Profile and areal parameters were evaluated by means of a contact 3D profilometer. The occurrence of individual defects both on the surface and underneath it was studied by means of the methods of electron microscopy and focused ion beam (FIB). Furthermore, the local chemical composition of the surface of the workpiece (EDX) was determined.

Keywords

WEDM, Electrical Discharge Machining, pure molybdenum, morphology of surface, topography, chemical composion, cracks

Released

07.10.2017

Publisher

UJEP

Location

Ústí nad Labem

Pages from

786

Pages to

790

Pages count

5

URL

BibTex


@article{BUT140163,
  author="Kateřina {Mouralová} and Libor {Beneš} and Radim {Zahradníček}",
  title="Defects in the surface layer of pure molybdenum after WEDM",
  annote="The utilisation of pure molybdenum in high-temperature applications in a vacuum requires very precise machining. Considering the fact that conventional machining methods do not achieve the required geometrical and dimensional accuracy in several cases, it is necessary to use the unconventional technology of wire electrical discharge machining (WEDM). This study aims at analysing the surface and subsurface layer of pure molybdenum after WEDM in terms of the occurrence of defects. Profile and areal parameters were evaluated by means of a contact 3D profilometer. The occurrence of individual defects both on the surface and underneath it was studied by means of the methods of electron microscopy and focused ion beam (FIB). Furthermore, the local chemical composition of the surface of the workpiece (EDX) was determined.",
  address="UJEP",
  chapter="140163",
  howpublished="print",
  institution="UJEP",
  number="5",
  volume="2017",
  year="2017",
  month="october",
  pages="786--790",
  publisher="UJEP",
  type="journal article in Scopus"
}