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High temperature resistance of selected HVOF coatings Šárka Houdkováa *, Jan Černýb , Zdeněk Palac and Petr Haušildd aVýzkumný a zkušební ústav Plzeň, Czech Republic, houdkov@ntc.zcu.cz bCzech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Czech Republic, cernyj39@fjfi.cvut.cz cCzech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Czech Republic, zdenek.pala@fjfi.cvut.cz dCzech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Czech Republic, petr.hausild@fjfi.cvut.cz Keywords: High temperature, hardness, phase composition, HVOF, coating Abstract.
Depending on the sprayed material, the coatings suitable for high temperature applications can be sprayed as well.
While different thermal spraying technologies (e.g. plasma spraying, flame spraying, cold spraying,..) were developed and are used for different types of coating materials and related different application, the HVOF (High Oxygen High Velocity) spraying technology is the most suitable for spraying metal and hardmetal material.
To the materials, profiting from the advantages of HVOF technology, belong coatings intended as a protection against wear in high temperature environment.
Rodrígues, of the deposition techniques on the mechanical properties and microstructure of NiCrBSi coatings, Journal of Materials Processing Technology 204 (2008) 304-312[6] S.

Gambatese, Energy consumption of asphalt and reinforced concrete pavement materials and construction.
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Construction and Building Materials, 2002(16): 281-289
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Over the past few years, lanthanide ions-based nanostructured materials have draw much interest for their high potential of becoming a new class of luminescent materials, with a wide range of application in displays, sensors and lasers.
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Experimental Details Materials and procedure.
The annealing treatment is required to minimize the deleterious effects of cold compaction on the magnetic performance of the SMC materials.
Journal of Applied Physics Vol.93(10)(2003), p.6659-6661
Janghorban: Journal of Magnetism and Magnetic Materials Vol.322(2010), p.808-813
Janghorban: Soft magnetic composite materials (SMCs).

However, the results of the study have only suggested a new shaping method on nonmetallic specimens, which has not yet been announced for metallic materials.
- Materials: SUS304 steel has chemical composition, mechanical properties according to JIS G-4303-91 standard
Hameedullah, “Power Prediction Model for Turning EN-31 Steel Using Response Surface Methodology”, Journal of Engineering Science and Technology Review 3 (1) (2010) 116-122, 2010
Narayana Rao, “Application of Taguchi approach and Utility Concept in solving the Multi-objective Problem when turning AISI 202 Austenitic Stainless Steel”, Journal of Engineering Science and Technology Review 4 (1) (2011) 55-61, ISSN: 1791-2377 © 2011 Kavala Institute of Technology.
Tuy, “principle of material cutting”, Hanoi Technic and Science Publishing House, 2011

Surveys show that material to be used for alteration is almost ordinary or plastic paper.
In which, alteration material and character or background can be separated effectively.
Acknowledgements Thanks to the support of the funds for national natural science (60972093) and outstanding young of Anhui province in China (10040606Y07).
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Introduction In recent years, the state, local and industry standards have marked the foam concrete, which become one of the major building materials in our country.
Test materials and methods Test materials 1) Cement: P·O 42.5cement produced by Baotou grassland. 2) Fly ash: levelⅡ, dry fly ash produced by Baotou hope aluminum self-provided power plant. 3) Brick powder: crushing laboratory waste brick to 1 to 5 mm particles with jaw crusher and using ball mill to grind fine again.
New building materials, 2008(5):16-19(In Chinese) [2] Ramamurthy K, Gumaste K S.
Journal of xuzhou engineering institute, 2011, (2):1-5(In Chinese) [6] Lilong Fan.
New building materials, 2012(7):45-47(In Chinese)

Iranian Journal of Science and Technology-Transactions of Mechanical Engineering. 44(2020) 83-91
Journal of the Mechanical Behavior of Biomedical Materials. 81(2018)106-119
Journal of Thermoplastic Composite Materials. 31(2018) 119-142
Design and materials development of automotive crash box: a review.
Rapid Prototyping Journal. 24(2018) 1245-1264

Milling Experiment Design The chemical compositions of 316 steel materials are shown in Table 1, theoretically its hardness is about HRB95, extensibility ≥ 30%, the measured hardness of workpiece is HRA52, its hardness is low, but toughness is high.
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