Journal of Surface Investigation-x-ray Synchrotron and Neutron Techniques 

About: Journal of Surface Investigation-x-ray Synchrotron and Neutron Techniques is an academic journal published by Springer Science+Business Media. The journal publishes majorly in the area(s): Thin film & Ion. It has an ISSN identifier of 1027-4510. Over the lifetime, 3264 publications have been published receiving 9244 citations. The journal is also known as: Journal of surface investigation: x-ray, synchrotron and neutron techniques (Print) & Journal of surface investigation: X-ray, synchrotron and neutron techniques (Online).

Study of the crystalline and magnetic structures of BaFe11.4Al0.6O19 in a wide temperature range

Abstract: The structural study of barium hexaferrite (BaFe12O19) whose iron ions are partly replaced by diamagnetic aluminum ions (x = 06) is carried out with the help of the neutron-diffraction method Experimental data are acquired in a wide temperature range of 4–730 K via a high-resolution diffractometer, which makes it possible to obtain both precise information on changes in crystalline and magnetic structures and behavioral data on the sample microstructure BaFe114Al06O19 retains the magnetoplumbite structure in the whole temperature range and exhibits the “invar effect,” according to which its bulk thermal-expansion coefficient is close to zero at low temperatures (<150 K) The magnetic structure is defined by the Gorter model with magnetic moments oriented along the hexagonal axis For all nonequivalent crystallographic positions, the magnetic moment of F3+ is close to 4 μB at 4 K The total magnetic moment per formula unit is 156 μB, ie, less than the nominal value of 20 μB This is caused by the fact that diamagnetic Al ions are included in the composition Crystallite microstrains increase insignificantly with temperature due to increasing influence of the magnetic subsystem

Cold Metal Transfer (CMT) Based Wire and Arc Additive Manufacture (WAAM) System

Abstract: The forming system of wire and arc additive manufacture (WAAM) based on cold metal transfer (CMT) is a high build rate system for production of near-net shape components layer by layer, which is composed of industrial robot operation system and 3D path simulation software. In the 3D path simulation software, the working layout of the off-line virtual robot is carried for the imported three-dimensional model to screen the model wall thickness, correct process library, set process parameters, slice, layer, plan deposition path, form simulation and upload program to execution system. Among the whole system, the 3D path simulation software provides essential database for process control and an innovative planning path to coordinate industrial robot platform to build parts layer by layer. Furthermore, the experiment is also performed to study the stability of aluminum alloy forming using the WAAM-CMT system by establishing different experimental models and changing process parameters and process modes of industrial robot and Fronius digital welding machine embedded on robot operation platform.

Additive Manufacturing Based on Welding Arc: A low-Cost Method

Abstract: The objective of this paper is to present a review of a new developing manufacturing technology based on welding of metallic materials. Additive manufacturing (AM) is based on robot welding and it has showed the high flexibility, efficiency, fast output, good quality and low cost. This paper explores several common welding materials and manufacturing technologies include the shield gas, materials engineering, processes and most concerned commercial interests. AM has the potential to revolutionize the global parts manufacturing and industrial tendencies with the rapid development of increasing material manufacturing technology. AM based on arc welding has the big advantages of high efficiency and low cost, which makes it possible to use in many industries although it has a little bit poor surface qualities compare to AM based on laser and electron beam manufacturing.

Mechanism of the interaction between Al2O3 and SiO2 during the chemical-mechanical polishing of sapphire with silicon dioxide

Abstract: Chemical-mechanical polishing of sapphire with colloidal silicon dioxide has been studied with X-ray photoelectron spectroscopy. It has been found that aluminum silicate with the composition Al2SiO5 is formed on the polished crystal surface. The silicon-containing layer thickness reaches 20.5 nm. Its value decreases in the sequence of samples with (0001), ((10\(\bar 1\)2), and (11\(\bar 2\)0) and orientations. A mechanism by which Al2O3 reacts with SiO2 has been proposed. It has been revealed that sapphire samples with different crystallographic orientations exhibit an anisotropic rate of material removal. The anisotropy can be explained by a difference in the rate of the formation of intermediate products during chemical interaction between aluminum and silicon oxides on different planes.

Radiation effects on spacecraft materials

Abstract: Radiation conditions are described for various space regions, radiation-induced effects in spacecraft materials and equipment components are considered and information on theoretical, computational, and experimental methods for studying radiation effects are presented. The peculiarities of radiation effects on nanostructures and some problems related to modeling and radiation testing of such structures are considered.