Details
| Original language | English |
|---|---|
| Pages (from-to) | 240-248 |
| Number of pages | 9 |
| Journal | International Journal of Materials Research |
| Volume | 105 |
| Issue number | 3 |
| Publication status | Published - Mar 2014 |
Abstract
Using two active brazes based on silver-copper, the wetting behaviour was investigated on hard metals and diamond. Here, it was possible both to characterise the in-situ wetting angle as a function of temperature, the surface roughness and the time by using the flow rate and the wetting angle as well as to analyse the underlying mechanisms. A directly proportional relationship between temperature and the formed wetting angle was demonstrated during the tests up to a material dependent limiting value. Moreover, the wetting behaviour was shown to deteriorate with increasing surface roughness values. By means of investigating the diffusion zone between the carbide metal and the braze using scanning electron microscopy, it was possible to establish that the penetration depth of the active element titanium into the carbide metal increased with increasing brazing temperature.
Keywords
- Active brazing, Carbide metal, Diamond, Surface roughness, Wetting angle
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Metals and Alloys
- Materials Science(all)
- Materials Chemistry
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: International Journal of Materials Research, Vol. 105, No. 3, 03.2014, p. 240-248.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The influence of brazing temperature and surface roughness on the wettability of reactive brazing alloys
AU - Wulf, Eric
AU - Bachmann, Hendrik
AU - Möhwald, Kai
AU - Eifler, Rainer
AU - Maier, Hans Jürgen
PY - 2014/3
Y1 - 2014/3
N2 - Using two active brazes based on silver-copper, the wetting behaviour was investigated on hard metals and diamond. Here, it was possible both to characterise the in-situ wetting angle as a function of temperature, the surface roughness and the time by using the flow rate and the wetting angle as well as to analyse the underlying mechanisms. A directly proportional relationship between temperature and the formed wetting angle was demonstrated during the tests up to a material dependent limiting value. Moreover, the wetting behaviour was shown to deteriorate with increasing surface roughness values. By means of investigating the diffusion zone between the carbide metal and the braze using scanning electron microscopy, it was possible to establish that the penetration depth of the active element titanium into the carbide metal increased with increasing brazing temperature.
AB - Using two active brazes based on silver-copper, the wetting behaviour was investigated on hard metals and diamond. Here, it was possible both to characterise the in-situ wetting angle as a function of temperature, the surface roughness and the time by using the flow rate and the wetting angle as well as to analyse the underlying mechanisms. A directly proportional relationship between temperature and the formed wetting angle was demonstrated during the tests up to a material dependent limiting value. Moreover, the wetting behaviour was shown to deteriorate with increasing surface roughness values. By means of investigating the diffusion zone between the carbide metal and the braze using scanning electron microscopy, it was possible to establish that the penetration depth of the active element titanium into the carbide metal increased with increasing brazing temperature.
KW - Active brazing
KW - Carbide metal
KW - Diamond
KW - Surface roughness
KW - Wetting angle
UR - http://www.scopus.com/inward/record.url?scp=84896974795&partnerID=8YFLogxK
U2 - 10.3139/146.111022
DO - 10.3139/146.111022
M3 - Article
AN - SCOPUS:84896974795
VL - 105
SP - 240
EP - 248
JO - International Journal of Materials Research
JF - International Journal of Materials Research
SN - 1862-5282
IS - 3
ER -