scholarly journals Surface roughening, columnar growth and intrinsic stress formation in amorphous CuTi films

1997 ◽  
Author(s):  
U.V. Huelsen ◽  
U. Geyer ◽  
P. Thiyagarajan
Keyword(s):  
Intrinsic Stress ◽  
Surface Roughening ◽  
Columnar Growth ◽  
Stress Formation

scholarly journals Surface Roughening, Columnar Growth and Intrinsic Stress Formation in Amorphous CuTi Films

1996 ◽  
Vol 441 ◽  
Author(s):  
U. v. Hulsen ◽  
P. Thiyagarajan ◽  
U. Geyer
Keyword(s):  
Electron Beam Evaporation ◽  
Intrinsic Stress ◽  
Scanning Tunneling ◽  
Surface Roughening ◽  
Growth Stages ◽  
Tunneling Microscopy ◽  
Columnar Growth ◽  
Compressive Stresses ◽  
Stress Formation

AbstractThe growth of amorphous CuTi films, prepared by electron beam evaporation, is investigated by Scanning Tunneling Microscopy (STM), Small Angle Neutron Scattering (SANS) and in situ measurements of intrinsic mechanical stresses (ISM). In early growth stages the films develop compressive stresses and, with increasing film thickness, a crossover to tensile stresses. In the same thickness range the STM investigations show a change in the growth mode. Our experiments suggest a transition from planar growth with statistical surface roughening to columnar growth.

Surface roughening and columnar growth of thin amorphous CuTi films

1997 ◽  
Vol 70 (13) ◽  
pp. 1691-1693 ◽  
Author(s):  
U. Geyer ◽  
U. von Hülsen ◽  
P. Thiyagarajan
Keyword(s):  
Surface Roughening ◽  
Columnar Growth

Influence of the Torch to Substrate Velocity and Resulting Temperature on the Residual Stresses in Alumina Plasma Sprayed Coatings

1997 ◽  
Author(s):  
A.C. Leger ◽  
A. Grimaud ◽  
P. Fauchais ◽  
G. Delluc
Keyword(s):  
Residual Stresses ◽  
Displacement Sensor ◽  
Columnar Growth ◽  
Coating Microstructure ◽  
Plasma Sprayed Coatings ◽  
Stress Formation ◽  
Flat Beam ◽  
Plasma Sprayed ◽  
Sprayed Coatings

Abstract A system, developed in the laboratory, allows to record in situ the deformation of a flat beam with a displacement sensor and so to analyse stress formation during spraying and upon cooling with fixed or rotating substrates. The beam is fixed onto a pair of knife edges by springs. The knife edges are disposed on a water-cooled rotating cylindrical substrate holder and the beam substrate (2 x 15 x 100 mm3) is parallel to the holder axis. The torch is moved back and forth parallel to the holder axis and the beam temperature is recorded by a thermocouple spot welded to it and also by an IR pyrometer. The influence of beam temperature for a given torch/substrate velocity on the residual stresses is studied for alumina and zirconia coatings. With fixed substrates a sharp increase of the residual stresses related to coating microstructure exists for a transition temperature around 600°C. It seems to correspond to a columnar growth throughout the layered splats. The effect of the torch to substrate velocity and so the pass thickness is studied too.

Macroscopic intrinsic stress formation in amorphous CuTi films

1995 ◽  
Vol 507 (7) ◽  
pp. 623-633 ◽  
Author(s):  
S. Dina ◽  
U. Geyer ◽  
G. v. Minnigerode
Keyword(s):  
Intrinsic Stress ◽  
Stress Formation

Observation of surface roughening on Cu(1, 1, 5)

1987 ◽  
Vol 48 (6) ◽  
pp. 1017-1028 ◽  
Author(s):  
F. Fabre ◽  
D. Gorse ◽  
B. Salanon ◽  
J. Lapujoulade
Keyword(s):  
Surface Roughening

Influence of Sample Preparation on Intrinsic Stress Inside a Model Chip—Comparison of Results from Electric Read-Out and Raman Spectroscopy

2017 ◽  
Author(s):  
T. Schaffus ◽  
H. Pfaff ◽  
P. Albert ◽  
M. Schaffus ◽  
F. Kroninger ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Sample Preparation ◽  
Intrinsic Stress ◽  
Stress Monitoring ◽  
Preparation Methods ◽  
Comparison Of Results ◽  
The Given

Abstract The given project is to benchmark typical preparation methods under the aspect of the influence of initial intrinsic stresses inside electric components. Raman spectroscopy has been applied as well as the piezo resistive readout on a specifically designed model stress monitoring chip.

COLUMNAR GROWTH HABIT APPLE RESISTANCE TO LAW TEMPERATURE AT AUTUMN AND WINTER PERIOD

2020 ◽  
Vol 63 (1) ◽  
pp. 70-76
Author(s):  
A. S. Zemisov ◽  
N. N. Saveleva ◽  
A. N. Yushkov ◽  
V. V. Chivilev ◽  
N. V. Borzykh
Keyword(s):  
Growth Habit ◽  
Winter Period ◽  
Columnar Growth ◽  
Autumn And Winter
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