In this study, a TiC-reinforced composite coating was produced to improve the wear resistance of a pearlite matrix grey iron using a pre-placed Ti powder by laser cladding. Results of scanning electron microscopy (SEM), X-ray diffractometer (XRD), and energy dispersive X-ray spectroscopy (EDS) confirmed that the coating was composed of TiC particles and two kinds of α-Fe phase. The fine TiC par...

Laser cladding coating with wolfram carbide (WC) as enhanced particles can improve the performance of nickel-based materials. However, there still exists several problems, such serious element segregation and unequal distribution reinforcement phase. In order to mechanical properties further, IN718/WC coatings were prepared by ultrasonic vibration-assisted laser cladding. The effects vibration ...

Refractory high-entropy alloys (RHEAs) contain alloying elements with a high melting point, promising high-temperature applications due to their unique properties. In this work, laser cladding is used prepare RHEAS based on NbMoTaTiNi. At the same time as cladding, ultrasonic field used, and then microstructural characteristics, grain size, residual stress, wear, hardness of coating are evaluat...

We propose a simple UV based soft-lithography process for fabrication of low-loss polymer PSQ-L waveguides. The fabrication process consists of two steps: the imprint step for structuring is done first on the cladding PSQ-LL layer and is followed by a spin-coating step to fill the imprinted features with core PSQ-LH layer material. Even with non-polishing waveguide facets, the extracted scatter...

Fe60 laser cladding coating was prepared on the surface of 45 steel with assistance alternating magnetic field–mechanical vibration coupling field. The XRD results show that is mainly composed solid solution Ni-Cr-Fe, (Fe, Ni), and Fe-Cr also contains a certain amount Cr2Fe14C hard phase. In process cladding, chemical composition not affected by Under interaction field, liquid metal in molten p...

This work addresses a new configuration that improves the sensitivity of a humidity sensor based on a long-period fiber grating coated with a SiO(2)-nanospheres film. An intermediate higher refractive index overlay, deposited through Electrostatic Self-Assembly, is placed between the fiber cladding and the humidity sensitive film in order to increase the total effective refractive index of the ...

In this study, AlFeCrMoNi1.8Nb1.5 (at.%) eutectic high-entropy alloy (EHEA) coating was successfully prepared on the surface of M2 high-speed steel (HSS) by wide-laser cladding. The effects laser defocusing amount, power, scanning speed, and preset powder thickness formation quality EHEA were studied orthogonal experimental design, then mechanical properties water-cooled solidification under op...