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Pamela Miśkiewicz, Iwona Frydrych, Wojciech Pawlak and Agnieszka Cichocka

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.

Open access

N. Murali, K. Vijaya babu, K. Ephraim babu and V. Veeraiah

broadening of the peaks with an increase in temperature suggests the presence of electrical process in the material with a distribution of relaxation time. This indicates the temperature dependence of electrical relaxation phenomena in the materials [41] . The high value of Z′ and Z″ at lower frequency regions is due to the higher polarization caused by space charge. It is also observed that the values of Z′ and Z″ gradually decrease with increasing frequency and temperature. This indicates an increase in AC conductivity with the rise in temperature and frequency

Open access

A. Turowska and J. Adamiec

Abstract

The purpose of the paper was to evaluate the resistance to high temperature corrosion of laser welded joints of finned tubes made of austenitic steel (304,304H) and nickel alloys (Inconel 600, Inconel 625). The scope of the paper covered the performance of corrosion resistance tests in the atmosphere of simulated exhaust gases of the following chemical composition: 0.2% HCl, 0.08% SO2, 9.0% O2 and N2 in the temperature of 800°C for 1000 hours. One found out that both tubes made of austenitic steel and those made of nickel alloy displayed good resistance to corrosion and could be applied in the energy industry.

Open access

R. Schaller

REFERENCES [1] R. Schaller, G. Fantozzi, G. Gremaud (Eds.), Mechanical Spectroscopy Q −1 2001, Materials Science Forum 366-368 (2001). [2] P. Millet, R. Schaller, W. Benoit, Characteristic internal friction spectrum of grey cast iron, J. Physique 42 , C5, 929-934 (1981). [3] P. Millet, R. Schaller, W. Benoit, High damping in grey cast iron, J. Physique 46 , C10, 405-408 (1985). [4] C. Mayencourt, R. Schaller, A high-damping magnesium matrix to limit fatigue in composite, J. of Reinforced Plastics and Composites 18 , 1677-1688 (1999

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W. Szkliniarz and A. Szkliniarz

Abstract

The study presents fundamentals of manufacturing technologies for aircraft engine construction elements, made of light, intermetallic TiAl based alloy, which is characterized by high relative strength and good creep and oxidation resistance. For smelting of alloy, the vacuum metallurgy methods were used, including application of induction furnace equipped with special crucibles made of isostatic-pressed, high-density graphite. To produce good quality construction element for aircraft engine, such as low-pressure turbine blade, there were methods of gravity casting from a very high temperature to the preheated shell moulds applied.

Open access

D. Kopyciński, E. Guzik, R. Gilewski, A. Szczęsny and J. Dorula

amount of selected metal materials. Solidification of Metals and Alloys . 8(42), 73-86. [8] Fraś, E., Kopyciński, D., Janas, A. & Kolbus, A. (1999). A method of producing composites based on high-aluminum cast iron. The patent application No. P 337-305 17.12.1999. [9] Kopyciński, D. & Gilewski, R. (2012). Evaluation of resistance to oxidation of high-aluminum cast iron. Protection from Corrosion . 11, 511-513. [10] Kalandyk, B. & Głownia, J. (2001). Estimate of mathematical model of weight losses kinetic in Miller

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Marcel Kuruc, Martin Sahúl, Marek Zvončan, Jozef Peterka and Ľubomír Čaplovič

test on steel at low temperatures. The Japan society of mechanical engineers , 23 (185), 1736-1744. 11. KOBRIN, P. A., SEMIATIN, S. L. 2001. Determination of interface heat-transfer coefficients for permanent-mold casting of Ti-6Al-4V. Metallurgical and materials transactions B , 32 B, 685-695. 12. UMBRELLO, D., MICARI, F., JAWAHIR, I. S. 2012. The effects of cryogenic cooling on surface integrity in hard machining: A comparison with dry machining. CIRP Annals - Manufacturing Technology 61 , 103-106. 13. KAKINUMA

Open access

Daria Mikołajczak, Michał Kulka and Natalia Makuch

References [1] Glaeser W.A., Materials for Tribology, Tribology Series, 20,Elsevier, 1992. [2] Skołek-Stefaniszyn E., Kaminski J., Sobczak J., Wierzchoń T., Modifying the properties of AISI 316L steel by glow discharge assisted low-temperature nitriding and oxynitriding, Vacuum 85 (2010) 164-169. [3] Skołek-Stefaniszyn E., Burdynska S., Mroz W., Wierzchoń T., Structure and wear resistance of the composite layers produced by glow discharge nitriding and PLD method on AISI 316L austenitic stainless steel, Vacuum

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M. Pasandi, M. Janmohammadi, Z. Movahedi and N. Sabaghnia

-1066. Van Beuningen LT, Bush RH, 1997 - Genetic diversity among North American spring wheat cultivars: III. Cluster analysis based on quantitative morphological traits. Crop Sci., 37: 981-988. Wei YM, Hou YC, Yan ZH Wu W, Zhang ZQ, Liu DC, Zheng YL, 2005 - Microsatellite DNA polymorphism divergence in Chinese wheat ( Triticum aestivum L.) landraces highly resistant to Fusarium head blight. J Appl Genet., 46: 3-9.

Open access

A. Szczotok

-342 (1993). [6] Buehler Ltd. Buehler’s Guide to Materials Preparation. The Argus Press, Niles, Illinois, USA, 2002. [7] J. Szala, J. Cwajna, Acta Stereol. 18/1, 89-94 (1999). [8] A. Szczotok, Materialwissensch. Werkstoffech. 46 (4/5), 320-329 (2015). [9] A. Szczotok, J. Cwajna, Microsc. Microanal. 21 (3), 1339-1340 (2015). [10] X. Li, J. Wang, J. Zhang, Y. Han, Xi Li, Materials 8 , 3428-3441 (2015). [11] S. Zheng, Y.L. Jia, J. Tang, Mater. Sci. Forum 788 , 554-559 (2014).