搜索结果: 1-15 共查到“材料科学 Laser”相关记录60条 . 查询时间(0.142 秒)
Researchers at Rice University have created flexible, patterned sheets of multilayer graphene from a cheap polymer by burning it with a computer-controlled laser. The process works in air at room temp...
Application of elastic mid-IR-laser-light scattering for non-destructive inspection in microelectronics
mid-IR-laser-light scattering non-destructive inspection microelectronics
2011/6/7
Some possible applications of the low-angle mid-IR-light scattering technique and some recently developed on its basis methods for non-destructive inspection and investigation of semiconductor materia...
Mid-IR-laser microscopy as a tool for defect investigation in bulk semiconductors
Mid-IR-laser microscopy defect investigation bulk semiconductors
2011/6/3
A non-destructive optical technique described in this paper is an effective new tool for the investigation of defects in semiconductors. The basic instrument for this technique—a mid-IR-laser microsco...
Optical beam-induced scattering mode of mid-IR laser microscopy: a method for defect investigation in near-surface and near-interface regions of bulk semiconductors
Optical beam-induced scattering mode mid-IR laser microscopy
2011/6/3
This paper presents a new technique of optical beam-induced scattering of mid-IR-laser radiation, which is a special mode of the recently developed scanning
mid-IR-laser microscopy. The technique in ...
Microstructure and properties of laser surface alloyed PM austenitic stainless steel
Microstructure properties laser surface PM austenitic stainless steel
2010/5/12
Laser surface alloying is a unique method where the external alloying elements in the form of powder, past, suspension, electrolytic coatings and plasma or flame sprayed coatings are introduced into a...
Effect of high power diode laser surface alloying on structure of MCMgAl12Zn1 alloy
Magnesium alloys Surface treatment Laser treatment Silicon carbide
2010/5/1
During the last few decades the world has seen a rapid growth of application of magnesium and its alloys almost in every field of today's industry. This is due to numerous characteristics of the metal...
Nanomechanical properties of silicon surfaces nanostructured by excimer laser
Nanomechanical properties silicon surfaces nanostructured excimer laser
2010/4/30
Excimer laser irradiation at ambient temperature has been employed to produce nanostructured silicon surfaces. Nanoindentation was used to investigate the nanomechanical properties of the deformed sur...
Comparison of surface laser alloying of chosen tool steel using Al2O3 and ZrO2 powder
Comparison alloying tool steel Al2O3 ZrO2 powder
2010/3/12
In this paper there is presented the laser treatment as a part technology applied for steel surface manufacturing. There is presented laser treatment with remelting of hot work tool steel 32CrMoV12-28...
A study on the CO2 laser welding characteristics of high strength steel up to 1500MPa for automotive application
A study CO2 laser welding characteristics high strength 1500MPa automotive application
2010/3/12
The automotive industry is continuously striving to develop light weight vehicles to address global warming. For light weight vehicles, the focus on materials is shifting increasingly from conventiona...
The influence of laser modification on the structure and properties of the X40CrMoV5-1 and 32CrMoV12-28 hot work tool steels
Surface treatment Heat treatment Hot work tool steel Laser alloying
2010/2/2
Alloys requiring a high technical application are often producing by the use of laser. Laser treatment technologies are widely used to modify superficial layers of different materials. In general the ...
Structure and properties of the laser alloyed 32CrMoV12-28 with ceramic powder
Surface treatment Heat treatment Hot work tool steel
2009/12/14
Purpose: The work was performed for the reason to determine the laser treatment parameters, particularly the laser power, to achieve a high value of layer hardness for protection of this hot work tool...
Microstructure analysis of the modified casting magnesium alloys after heat and laser treatment
Magnesium alloys Heat treatment Laser treatment
2009/12/14
Purpose: In this paper there is presented the structure of the modeling cast magnesium alloy EN-MCMgAl6Zn1 as cast state, after heat treatment and laser treatment.
Design/methodology/approach: The pr...
Laser remelting of Al-Fe-TiO powder composite on aluminium matrix
Composites Laser Intermetallic phases
2009/12/14
Purpose: Synthesis of the AlFeTiO3 composite powder lead to formation metal matrix composite layer. The formation of an in-situ surface layer was carried out on aluminium alloy substrate using laser c...
Development of the laser method of multicrystalline silicon surface texturization
Surface treatment Photovoltaics Solar cells Multicrystalline silicon
2009/12/3
Purpose: The aim of the paper is to demonstrate a laser method of multicrystalline silicon texturization. This means creating a roughened surface so that incident light may have a larger probability o...
Laser surface treatment of the hot work tool steel alloyed with TaC and VC carbide powders
Laser remelting and alloying Tantalum carbide Vanadium carbide
2009/12/3
Purpose: The paper presents investigation results of the structure and properties of alloying surface layer of the X40CrMoV5-1 hot work tool steel, using the high power diode laser HPDL. Tantalum and ...