The Selection and Characterization of the Absorptive Coatings Used to Laser Surface Treatments of Tool Steel Parts

2017 ◽  
Vol 1143 ◽  
pp. 167-173
Author(s):  
Petrică Alexandru ◽  
Simona Boiciuc
Keyword(s):  
Continuous Wave ◽  
Solid Phase ◽  
Laser Action ◽  
Graphite Powder ◽  
Absorption Capacity ◽  
Continuous Wave Laser ◽  
Conductivity Equation ◽  
Thermal Conductivity Equation ◽  
Surface Quenching

The paper presents the experimental results on the surface quenching by CO2 continuous wave laser action of solid phase steel with 1%C obtained, using different absorptive (ZnO, TiO2, ZrO2, graphite) powder coatings. The absorptivity of these coatings was determined by resolving the thermal conductivity equation for the irradiation with an energy punctual source on the massive body. Among the four investigated powders, for thermal treatment with laser of tools carbon steel it is recommend the powder of zinc oxide as coating with most efficient absorption capacity.

Continuous-wave laser action of Yb3+-doped lanthanum scandium borate

2005 ◽  
Vol 80 (2) ◽  
pp. 159-163 ◽  
Author(s):  
J.J. Romero ◽  
J. Johannsen ◽  
M. Mond ◽  
K. Petermann ◽  
G. Huber ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Laser Action ◽  
Continuous Wave Laser ◽  
Wave Laser ◽  
Lanthanum Scandium Borate

scholarly journals Numerical modeling of laser ablation of materials

2020 ◽  
Vol 28 (4) ◽  
pp. 398-405
Author(s):  
Ilkizar V. Amirkhanov ◽  
Nil R. Sarker ◽  
Ibrohim Sarkhadov
Keyword(s):  
Laser Ablation ◽  
Moving Boundary ◽  
Laser Action ◽  
Laser Pulses ◽  
Sample Surface ◽  
Ultrashort Laser Pulses ◽  
Laser Source ◽  
Maximum Temperature ◽  
Conductivity Equation ◽  
Thermal Conductivity Equation

In this paper, we report a numerical simulation of laser ablation of a material by ultrashort laser pulses. The thermal mechanism of laser ablation is described in terms of a one-dimensional nonstationary heat conduction equation in a coordinate system associated with a moving evaporation front. The laser action is taken into account through the functions of the source in the thermal conductivity equation that determine the coordinate and time dependence of the laser source. For a given dose of irradiation of the sample, the profiles of the sample temperature at different times, the dynamics of the displacement of the sample boundary due to evaporation, the velocity of this boundary, and the temperature of the sample at the moving boundary are obtained. The dependence of the maximum temperature on the sample surface and the thickness of the ablation layer on the radiation dose of the incident laser pulse is obtained. Numerical calculations were performed using the finite difference method. The obtained results agree with the results of other works obtained by their authors.

Continuous-wave laser action in Er3+:YLF at 3.41 µm

1994 ◽  
Vol 30 (19) ◽  
pp. 1596-1598 ◽  
Author(s):  
J.F. Pinto ◽  
L. Esterowitz ◽  
G.H. Rosenblatt
Keyword(s):  
Continuous Wave ◽  
Laser Action ◽  
Continuous Wave Laser ◽  
Wave Laser

scholarly journals Continuous-wave laser action at λ=1064.3 nm in proton- and carbon-implanted Nd:YAG waveguides

2003 ◽  
Vol 83 (20) ◽  
pp. 4110-4112 ◽  
Author(s):  
M. Domenech ◽  
G. V. Vázquez ◽  
E. Cantelar ◽  
G. Lifante
Keyword(s):  
Continuous Wave ◽  
Laser Action ◽  
Continuous Wave Laser ◽  
Wave Laser

Tunable single-frequency continuous-wave laser action in Co^2+:KZnF_3

1986 ◽  
Vol 11 (1) ◽  
pp. 12 ◽  
Author(s):  
K. R. German ◽  
U. Dürr ◽  
W. Künzel
Keyword(s):  
Continuous Wave ◽  
Laser Action ◽  
Single Frequency ◽  
Continuous Wave Laser ◽  
Wave Laser
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