A5081260483- Ion-surface interactions and analysis
- Additive Manufacturing and 3D Printing Technologies
- Advanced machining processes and optimization
- Advanced Machining and Optimization Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Electron and X-Ray Spectroscopy Techniques
- Silicon and Solar Cell Technologies
- Integrated Circuits and Semiconductor Failure Analysis
- Tunneling and Rock Mechanics
- Fusion materials and technologies
- Radiation Dose and Imaging
- Microstructure and mechanical properties
- Advanced X-ray and CT Imaging
- Additive Manufacturing Materials and Processes
- High Entropy Alloys Studies
- Cellular and Composite Structures
- Advanced Surface Polishing Techniques
- Iron and Steelmaking Processes
- Manufacturing Process and Optimization
- Semiconductor materials and interfaces
- Aluminum Alloys Composites Properties
- Ultrasonics and Acoustic Wave Propagation
Czech Technical University in Prague
1982-2023
City of Prague
1982
One completely new geometry and two modified chip breaker geometries were designed to increase the stability reliability of stainless steel dry drilling process. Experiments performed results individual tools compared with a conventional solid carbide twist drill Gühring Ratio diameter 5 mm. A matrix three feed rates (0,03–0,07 mm/rev) cutting speeds (20–30 m/min) was for conditions. Precipitation-hardenable 17-4 PH chosen as workpiece. During experiment, values thrust force, spindle torque,...
This paper evaluates the effect of stress-relieving heat treatment on AlSi10Mg alloy prepared by additive manufacturing using Laser Powder Bed Fusion (L-PBF) with print parameters: 370 W, 1400 m/s, and 50 μm. The as-built state four different annealing modes (240 °C/2 h, 240 °C/6 300 h/water-quenched) are investigated. To determine mode mechanical properties L-PBF alloy, heat-treated samples were compared each other. determined tensile hardness tests. strength in is 488 MPa, depending method...
The article deals with the application of computed tomography in dimensional quality control. advantage is that measured part not influenced by measuring force. It possible to measure complex parts and assemblies, their geometry, internal structure defects one step. disadvantage CT decreasing accuracy resolution when hi density materials or larger parts, which leads usage high accelerating voltage current. measurement result many factors, only instrument itself set parameters, but also...
The implanted boron depth profiles in samples comprising Si wafers covered with Ag films of various thicknesses are determined experimentally as well by Monte-Carlo simulation. A complex shape is revealed, which reproduced the calculation. Die Implantationsprofile Si-Plättchenproben, die mit Ag-Schichten verschiedener Dicke bedeckt wurden, werden sowohl experimentell wie auch mittels Monte-Carlo-Simulation bestimmt. Das gesamte Profil wird durch Berechnung gut reproduziert.
Dry machining is one of the main ways to reduce environmental burden process and negative effect cutting fluid aerosols on operators. In addition, dry can overall costs and, in case large workpieces, extra work associated with removing residual from workpiece adjacent area. For high-strength structural steel products, it typical drill holes larger diameters around 20 mm. Therefore, this devoted investigation drilling carried out a made S960QL helical diameter 21 The aim was find suitable...
Concentration profiles of As, Sb, and Bi implanted into Si are studied using backscattering the 200 keV α-particles. A conventional ion implanter serves as a source analyzing beam scattered particles detected silicon surface barrier detector. Measured projected ranges RP atoms found to be in satisfactory agreement with theoretical predictions. Die Konzentrationsprofile von implantiertem Sb und werden mittels Rückstreuung keV-α-Teilchen untersucht. Ein konventioneller Ionenimplanter dient als...
Abstract The main aim of this article is to compare two approaches decreasing the overall weight components by using additive manufacturing from AlSi10Mg alloy. This optimization advantageous as it lessens both production time parts (components) and costs, in key industries such aviation. first method used reduce a structure implementation lattice structures, which replace filled with selected structures different shapes, while maintaining properties original structure. other decrease...