scholarly journals Modification of Surface of Basalt Fabric on Protecting Against High Temperatures by the Method of Magnetron Sputtering

2019 ◽  
Vol 19 (1) ◽  
pp. 36-43 ◽  
Author(s):  
Pamela Miśkiewicz ◽  
Iwona Frydrych ◽  
Wojciech Pawlak ◽  
Agnieszka Cichocka
Keyword(s):  
Thermal Properties ◽  
Magnetron Sputtering ◽  
Heat Resistance ◽  
High Temperatures ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Specific Substrate ◽  
Chromium Layer ◽  
Contact Heat ◽  
Fabric Surface

Abstract Basalt fibers and fabrics made of these are characterized by excellent thermal and mechanical properties. Therefore, basalt fabrics, due to a good resistance to high temperatures, are frequently applied in the personal protection equipment (PPE). In order to improve their thermal properties and, above all, the contact heat resistance, the process of physical vapor deposition was proposed. The process of Physical Vapor Deposition (PVD) involves producing a coating on a specific substrate as a result of physical deposition of molecules, ions or atoms of the selected chemical compounds. The method selected for the test is the magnetron sputtering. It involves depositing a uniform film of chromium on the surface of the basalt fabric. In order to improve the thermal properties – especially the contact heat resistance, two values of thickness of the chromium layer deposited on the basalt fabric surface were adopted for the test. Covering 1 μm and 5 μm with the chromium layer did not fulfil the expectations and the research will be continued.

scholarly journals Biocompatibility and antibacterial properties of TiCu(Ag) thin films produced by physical vapor deposition magnetron sputtering

2021 ◽  
pp. 151604
Author(s):  
Saqib Rashid ◽  
Gian Marco Vita ◽  
Luca Persichetti ◽  
Giovanna Iucci ◽  
Chiara Battocchio ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Antibacterial Properties

scholarly journals Study on Some Thermal and Electrical Properties of Basalt Fabric Modified with Metal and Ceramics as a Result of Magnetron Sputtering

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2087
Author(s):  
Pamela Miśkiewicz ◽  
Iwona Frydrych ◽  
Magdalena Tokarska ◽  
Wojciech Pawlak
Keyword(s):  
Electrical Properties ◽  
Magnetron Sputtering ◽  
Imaging System ◽  
Radiant Heat ◽  
Original Method ◽  
Color Measurement ◽  
Contact Heat ◽  
Instrumental Color ◽  
Thermal And Electrical Properties ◽  
Fabric Surface

The main aim of the research was to compare the values of some thermal and electrical parameters obtained for a basalt fabric modified with the metal and ceramics coatings. The surface modification of basalt fabric was made by using a magnetron sputtering technique. Chrome and zirconium(IV) oxide coatings were deposited on the fabric surface. The thermal and electrical properties of selected fabrics were determined. In order to assess the comfort properties of fabrics, the thermal resistance of materials was analyzed. Instrumental color measurement was used for an assessment of the surface of modified and unmodified basalt fabric. Using a non-contact digital color imaging system, DigiEye, an original method of samples surface analysis was presented. As a result of research, the modification of basalt fabric surface for applications in a hot work environment enabled the improvement of thermal properties in relation to the references samples. The first level of protection against contact heat for a contact temperature of 100 °C was obtained for the zirconium(IV) oxide-modified basalt fabric. The first level of protection against radiant heat was obtained for all samples. The highest value for the heat radiant resistance was obtained for the chrome-modified basalt fabric.

Magnetron Sputtering for Low-temperature Deposition of CdTe-based Photovoltaics

2003 ◽  
Vol 763 ◽  
Author(s):  
Alvin D. Compaan
Keyword(s):  
Thin Film ◽  
Magnetron Sputtering ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
High Efficiency ◽  
Chemical Vapor ◽  
Rf Magnetron Sputtering ◽  
Polycrystalline Thin Film ◽  
Thin Film Semiconductors ◽  
Temperature Deposition

AbstractAlthough the deposition over large areas of polycrystalline thin-film semiconductors such as CdTe is possible by a variety of methods including close spaced sublimation, vapor transport deposition, physical vapor deposition, organometallic chemical vapor deposition, and electrodeposition, the use of a plasma-based method such as magnetron sputtering can have significant advantages. In this paper I review recent results from our group in the fabrication of CdS/CdTe cells using rf magnetron sputtering and discuss some of the advantages that appear possible from the use of sputtering methods in this class of materials. Some of these advantages are particularly relevant as the polycrystalline thin-film community address issues related to the challenges of fabricating high efficiency tandem cells with efficiencies over 25%. Recently we have achieved: improvements in sputtered cell performance with cells based on commercial SnO2:F as well as on substrates with our own sputtered ZnO:Al, progress in the use of reactive sputtering for the deposition of oxygen alloys of CdS and N-doped layers of ZnTe, and progress in the sputtering of wider and narrower bandgap alloys of CdTe with Zn, Mn, and Hg. Details of the sputtering process and some of the recent achievements are discussed below.

The influence of basalt fabrics modifications on their resistance to contact heat and comfort properties

2019 ◽  
Vol 31 (6) ◽  
pp. 874-886
Author(s):  
Pamela Miśkiewicz ◽  
Iwona Frydrych ◽  
Wojciech Pawlak
Keyword(s):  
Magnetron Sputtering ◽  
Gas Phase ◽  
Thermal Insulation ◽  
Basalt Fiber ◽  
Chemical Compounds ◽  
Contact Heat ◽  
Specific Chemical ◽  
Content Type ◽  
Physical Deposition ◽  
Fabric Surface

Purpose The purpose of this paper is to present the influence of modifying the fabric surface made from basalt fibers by the magnetron sputtering of chromium and aluminum layers on its resistance to contact heat and comfort properties. Design/methodology/approach In order to modify the surface of basalt fabric, the process of physical deposition from the gas phase was used. It relies on creating a coating on a selected substrate by applying physical atoms, molecules or ions of specific chemical compounds. The trial of modification was carried out using the magnetron sputtering method due to the material versatility, application flexibility and ability to apply layers on substrates of various sizes and properties. Findings The findings obtained regarding the heat resistance to contact heat and thermal insulation (comfort) properties show different values depending on the type of metal deposited and the thickness of coating layer. It was found that the modification of basalt fabric surface at the micrometer level changes the tested parameters. Research limitations/implications This paper presents the results of resistance to contact heat and thermal insulation properties only for the twill fabric made of basalt fiber. The surface modification of fabric was carried out using the chromium and aluminum of two values of layer thickness (1 and 5 µm). Originality/value So far, no tests have been carried out to modify the surface of fabric made from basalt fiber yarns using the magnetron sputtering method. In addition, it has not been studied, how the modification of fabric affects its resistance to contact heat and thermophysiological properties.

Physical Vapor Deposition of Cu(In,Ga)Se2Films for Industrial Application

2001 ◽  
Vol 668 ◽  
Author(s):  
T. Wada ◽  
S. Nishiwaki ◽  
Y. Hashimoto ◽  
T. Negami
Keyword(s):  
Solar Cell ◽  
High Temperatures ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Glass Structure ◽  
Open Circuit ◽  
Annealing Process ◽  
Soda Lime Glass ◽  
Post Annealing ◽  
Stage Process

ABSTRACTCu(In,Ga)Se2 thin films were prepared by physical vapor deposition. The CIGS films were deposited by three kinds of method. The 1st was “2-stage process” in which (In,Ga)2Se3 precursor layer was deposited on Mo coated soda-lime glass at the 1st stage, and then exposed to Cu and Se fluxes to form CIGS films at the 2nd stage. The 2nd method was an ordinary “3-stage process”. The 3rd method was “2-stage deposition and post-annealing process” in which CIGS films were deposited at low substrate temperatures and then the obtained CIGS precursor films were annealed in Se flux at high temperatures. A solar cell using a CIGS film prepared at 400 °C by the “2-stage process” showed an efficiency of 11.8 % and that using a CIGS film deposited at 350 °C by the “3-stage process” showed an efficiency of 12.4 %. The CIGS films deposited by the “2-stage deposition and post-annealing process” have similar microstructures to the device quality CIGS films deposited by the “3-stage process” at high temperatures. The solar cell with an MgF2/ITO/ZnO/CdS/CIGS/Mo/glass structure showed an efficiency of 17.5 % (Voc=0.634 V, Jsc=36.4 mA/cm2, FF=0.756). The thin CIGS films with a smooth and flat surface can be fabricated by the “2-stage deposition and post-annealing process”. The solar cell using a 0.7μm CIGS absorber layer showed an efficiency of over 12 % and a large open circuit voltage of 0.677 V.

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