다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

Additive manufacturing of metallic components – Process, structure and properties

Elements Of X Ray Diffraction

https://www.diva-portal.org/smash/get/diva2:17175/FULLTEXT02

Ionized physical vapor deposition (IPVD): A review of technology and applications

Materials, technological status, and fundamentals of PEM fuel cells – A review

Investigation of intrinsic correlation between microstructure evolution and mechanical properties for nickel-based weld metal

Using Cr3C2 and Fe-CrNiBSi powder blends as raw materials, an α-Fe matrix composite coating reinforced by in situ (Cr, Fe)7C3 rods, with a thickness of about 3.6 mm, was fabricated on the surface of AISI A36 low carbon steel by means of plasma-transferred arc welding. The results of microstructural analysis show that in the coating, a large number of carbides, (Cr, Fe)7C3, in rod shape grow, and radiate around some half-dissolved Cr3C2 particles. The results of dry sliding wear tests at loads 100, 200, and 300 N show that the wear resistances of (Cr, Fe)7C3-reinforced coating, respectively, are about 6.9, 14.9, and 17 times higher than that of nonreinforced pure Fe-CrNiBSi alloy coating; the average value and fluctuation range of friction coefficient (FC) of (Cr, Fe)7C3-reinforced coating are less than those of pure Fe-CrNiBSi alloy coating; the main wear mechanisms of pure Fe-CrNiBSi alloy coating are ploughing, deformation, and adhesive wear, whereas those of (Cr, Fe)7C3-reinforced coating are microcutting, abrasive, and oxidation wear; the cracks on surfaces of (Cr, Fe)7C3 rods increased with the increasing loads; and the matrix α-Fe can prevent them from extending further in the composite coating.

Microstructure and Dry Sliding Wear Behavior of Fe-Based (Cr, Fe) 7 C 3 Composite Coating Fabricated by PTA Welding Process

It is generally considered that an inductively coupled plasma (ICP) assisted magnetron sputtering allows independent control of the incident ion flux and its energy at the substrate. Some previous works, however, show that variation of the RF power induces changes in both the ion flux and its energy if an internal metallic coil antenna is used. In this study, we have applied an internal coil antenna with dielectric insulation, and plasma properties as well as ion energy distribution have been investigated by varying the RF power and the sputtering current. The incident ion flux was enhanced significantly by the addition of an ICP and exhibited a relatively narrow energy spread. Ion energy at the grounded substrate was found to be determined by the plasma potential and did not change markedly while increasing the RF power. These results enable us to independently adjust the incident ion flux and its energy by varying the RF power and the bias voltage to the substrate, respectively.

http://iopscience.iop.org/article/10.1143/JJAP.42.7086/pdf

Plasma Properties and Ion Energy Distribution in DC Magnetron Sputtering Assisted by Inductively Coupled RF Plasma

Relationships among Charpy impact toughness, microstructure and fracture behavior in 10CrNi3MoV steel weld joint

Improving the eco-efficiency of fiber reinforced composite by ultra-low cement content/high FA-GBFS addition for structural applications: Minimization of cost, CO2 emissions and embodied energy

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