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Investigation into strength T5К10 hard alloy after volumetric pulsed laser hardening (VPLH)
摘要： The given paper is devoted to the investigation of the phenomenon of shock wave excitation caused by laser impact in hard alloy T5R10 that is widely used for cutting tools manufacturing and for other purposes. The effect of volumetric pulsed laser hardening (VPLH) on the changes in strength of hard alloy T5R10 is considered. The factors influencing the creation of new stable structures in hard alloys are determined.
关键词： Wear resistance,Hard alloys,Hardening,Cutter power,Laser,Strength,X-ray structural analysis
更新于2025-09-12 10:27:22
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X-ray structural analysis of an epitaxially grown Ag film/Si(111)$\sqrt{3} \times \sqrt{3} $-B substrate interface
摘要： We investigated the structure of the Si(111)√3×√3-B surface and epitaxially grown Ag(111) film/Si(111)√3×√3-B substrate interface using surface X-ray diffraction. An analysis of their crystal truncation rod and fractional order rod scatterings revealed a good agreement between the structure of the Si(111)√3×√3-B surface and previous theoretical studies when taking into account structural inhomogeneity caused by subsurface defects. At the Ag film/Si(111)√3×√3-B substrate interface, the Si(111)√3×√3-B surface reconstruction was maintained intact. The experimentally determined positions of Ag atoms were displaced from the ideal Ag(111) bulk sites, and a 3×3 periodicity was introduced to the bottom layer of the Ag film at the interface. The 3×3 periodic corrugation was transferred, albeit damped, to the upper layer. This transfer was considered to be the origin of the 3×3 periodic pattern at the Ag film surface on the Si(111)√3×√3-B substrate, a pattern observed in our previous scanning tunneling microscope study.
关键词： crystal truncation rod,3×3 periodicity,surface X-ray diffraction,Si(111)√3×√3-B substrate,epitaxial growth,Ag film,fractional order rod,X-ray structural analysis
更新于2025-09-09 09:28:46