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The contact between two airsoft bullets (hard, frictional) was mimicked using a Young modulus Y hf = 500 Y hyd = 50 MPa, μ hf–hf = 30· μ hyd–hyd = 0.6 and e n = 0.8. In order to discriminate the effect of friction, we pursued simulations with three distinct inter-species frictions μ hf–hyd = 0.05, 0.2, and 0.3.
Specifically, out of serendipity, two very distinctive operative frameworks have recently brought about promising avenues of research and new discoveries in tribology: the friction-related...
ZrB 2 ceramics possess exceptional physical and thermal properties, including an extremely high melting point of 3245 ℃, a remarkable hardness of 23 GPa, superior strength, excellent thermal conductivity of 60 W/(m K), high electrical conductivity of 1.0×10 7 S/m, outstanding resistance to ablation, and exceptional thermal shock resistance. Due to its outstanding physical and thermal ...
Induction Seam Welding of Pipe and Tubing. Contact Seam Welding of Pipe and Tubing. Fundamentals and Principles of HF Welding. High Frequency (HF) welding processes rely on the properties of HF electricity and thermal conduction, which determine the distribution of heat in the workpieces.
Therefore, the tribo-oxidation product HfO 2 can significantly reduce the coefficient of friction of the solid solution Hf-Ag-N coating. The Ag 3 d spectrum shows two peaks located at 367.8 eV and 373.6 eV, which can be attributed to Ag 2 O [ [56] , [57] , [58] ].
Investigation results obtained for micro-, nano-, and combined coatings such as Ti-Si-N / Cr 2 C 3 – NiCr, Ti-N-Cr/Ni-Cr-B-Si-Fe featuring not only high nanohardness but also good corrosion resistance to NaCl, HCl, and H 2 SO 4, high friction wear resistance, and very high thermal stability up to 900°C are described.
Last Updated: 09 Oct 2023. Request PDF | Microstructure, mechanical and tribological behaviors of hard-yet-tough Hf-Ag-N coating | Hafnium nitride (HfN) possesses excellent mechanical...
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