Published in Japanese Journal of Applied Physics
Sputtering-made magnetic thin films with metal–ceramic multilayer structures have been reported to achieve excellent magnetic properties and/or new functions for various magnetic materials. However, sputtering-made magnetic films tend to have 10 or fewer layers because the main applications of thin films, such as magnetic sensors, recording heads a...
Published in Surface Topography: Metrology and Properties
Powder metallurgy was employed to facilitate self-lubricating composites using Cu-coated graphite powder, Cu-coated MoS2 powder and Cu-Sn alloy powder as raw materials. Investigations were conducted into how the sintering pressure affected the composites’ density, hardness, microstructure, and tribological properties. The results demonstrated that ...
Published in Japanese Journal of Applied Physics
To realize high areal density, hard disk drives larger than 4 Tbit in−2, ultrafine FePt grains of less than 5 nm and grain density larger than 24 T in−2 are required. Although there have been many investigations to reduce the grain size of FePt, there are only a few reports on the control of grain density. To increase the grain density, we focused ...
Published in Nuclear Fusion
A newly developed large-volume potassium-doped tungsten (W–K) plate with a thickness of 15 mm and a weight of 25 kg by powder metallurgy plus hot rolling was prepared to meet the requirements of the International Thermonuclear Experimental Reactor (ITER) in engineering application. In order to clarify the effect of K doping on the thermal shock per...
The development of generation IV nuclear reactor requires improvements in structural and cladding materials. Oxide dispersion strengthened (ODS) steels are promising candidates because of improved creep properties. Two main families of ODS steels are known, the first one is martensitic ODS steel with a full reverse ferrite to austenite phase transf...
Published in International Journal for Simulation and Multidisciplinary Design Optimization
In order to investigate the effect of energy density in selective laser melting (SLM) forming on the properties of porous bone scaffolds made of 316L stainless steel, the mechanism of different construction energy densities on the residual stress and microstructure of cubic porous bone scaffolds was investigated by combining experiments and finite ...
Published in Materials Futures
Nickel–yttria stabilized zirconia (Ni–YSZ) cermet is the most commonly used anode in solid oxide fuel cells (SOFCs). The current article provides an insight into parameters which affect cell performance and stability by reviewing and discussing the related publications in this field. Understanding the parameters which affect the microstructure of N...
Published in High Temperature Materials and Processes
Nickel base superalloy René 65 is a cast-wrought derivative of René 88DT. Lower cost and comparable physical properties allow René 65 to serve as a promising candidate material for turbine disks in next-generation aeroengines. The cast-wrought route leads to significant segregation of solute elements during solidification of René 65, which should b...
Published in Materials Research Express
In order to improve the quality of pulsed laser welding on magnesium alloy, the effect of pulse overlap rate on the microstructure and mechanical properties of the welds is studied. A Nd:YAG pulsed laser welding machine is used to carry the butt welding experiments on AZ31 magnesium alloy (1 mm), and the pulse overlap rate (10%, 30%, 50%, 70%, 90%)...
Published in Materials Research Express
The single scale SiCp reinforcement has a limited effect on the comprehensive performance of the composite, which restricts the optimization and improvement of its comprehensive performance. In order to improve the material’s strong plasticity, wear resistance, thermal expansion and other properties of the comprehensive requirements. The (micron an...
