Microstructural and electrical properties of Cu-chromium alloy (Cu-Cr) dispersed with vapor-grown carbon fiber (VGCF) prepared by powder metallurgy (P/M) process have been investigated. Cu-0.7 mass% Cr pre-alloyed powder (Cu-Cr) made by water atomization process was used as raw materials, which contained solid solute Cr elements in Cu matrix. The alloy powder coated with un-bundled VGCF by usin...

Advanced high strength steels (AHSS) are used for car body applications in the automotive industry to improve passenger safety, improve fuel efficiency and to lower harmful carbon emissions. Galvannealed AHSS are used to provide corrosion protection. AHSS are alloyed with several elements such as Mn, Si, Al, P, Mo, etc. to achieve better mechanical properties. However, the knowledge of the effe...

Three kinds of surfacing layers the austenitic steel, niobium alloyed steel and hypereutectic high chromium cast iron were prepared on 1045 substrate by arc process with self-shielding flux-cored wires. The bonding strength between was tested pull-lift test method. experimental results show that layer is highest up to 549.1 MPa, fracture location near fusion line quasi-cleavage characteristic. ...

The microelectrophoresis apparatus consists of a laterally oriented rectangular chamber and Ag-AgCl electrodes. This has been described in detail previously.5 Since that description several minor technical changes have been made in order to facilitate cleaning and repair of the apparatus. The sintered glass discs which separate the observation chamber from the electrode compartments are vertica...

The Master-alloy (MA) alloy route to promote a liquid phase during sintering has great potential reduce costs in low alloyed sintered steels, meanwhile enabling the introduction of innovative systems with Cr, Mn and Si. However, order successfully modify performance multi requirements must be met, including, for example, solubility base material, compatibility usual atmospheres, homogeneous dis...

The sintering of metal powders is an efficient and versatile technique to fabricate porous metal elements such as filters, diffusers, and membranes. Neck formation between particles is, however, critical to tune the porosity and optimize mass transfer in order to minimize the densification process. In this work, macro-porous stainless steel (SS) hollow-fibers (HFs) were fabricated by the extrus...