A Demonstration (DEMO) thermonuclear reactor is the next step after International Thermonuclear Experimental Reactor (ITER). Designs for a DEMO divertor and First Wall require joining of tungsten to steel; this difficult task, however, because metals’ physical properties necessary operating conditions. Brazing prospective technology that could be used solve problem. This work examines state-of-...

The work deals with the fabrication of a joint between AZ31 magnesium alloy and AW-6060 aluminium use Zn interlayer. layer was produced on surface an insert by diffusion bonding. then placed inside steel mould kept at room temperature. using compound casting filling liquid alloy, heated to 650 °C. microstructure bonding zone formed joined alloys analysed optical microscope scanning electron equ...

The effect of Si addition on the evolution bainitic transformation, carbon diffusion, carbide formation, and dislocation density in steel was investigated using in-situ high-energy X-ray diffraction (HEXRD). Alloys Fe-0.4C-1.7Mn (in wt%) with 1–4 wt% were austenitized at 1273 K then isothermally heat treated 573, 623, 673 K. According to HEXRD results, increasing content reduces transformation ...

The formation of a protective chromium carbide passive film makes austenitic stainless steel (ASS) alloys suitable for corrosive and high-temperature environments. This paper examined the transformation microstructure, corrosion, mechanical properties gas tungsten arc welded 316 steel. scientific principles governing metallurgical corrosion dynamics were discussed. review shows that on 316L ASS...

We assess key plasma surface interaction issues of an all-metal plasma facing component (PFC) system for ITER, in particular a tungsten divertor surface, and a beryllium or tungsten first wall. Such a system eliminates problems with carbon divertor erosion and T/C codeposition, and for an all-tungsten system would better extrapolate to post-ITER devices. The issues studied are sputtering, trans...

Fe-Al alloys in the aluminium range of 55-65 at.% exhibit a lamellar microstructure of B2-ordered FeAl and triclinic FeAl2, which is caused by a eutectoid decomposition of the high-temperature Fe5Al8 phase, the so-called ∊ phase. The orientation relationship of FeAl and FeAl2 has previously been studied by Bastin et al. [J. Cryst. Growth (1978 ▸), 43, 745] and Hirata et al. [Philos. Mag. Lett. ...

of vector-borne diseases in both the hosts and vectors of these agents. A pre-requisite for such analyses is effective methods for the extraction of high quality, inhibition-free nucleic acids. Arthropods are the vectors of multiple infectious disease agents and the extraction of nucleic acids from arthropods requires adequate disruption of the exoskeleton and maceration of tissues to release n...

In order to investigate the proposition that high-Z impurities are responsible for the anomalously short lifetime of the Caltech spheromak, the center electrode of the spheromak plasma gun has been coated with a variety of metals (bare steel, copper, nickel, chromium, rhodium, and tungsten). Visible light (230-890 nm) emitted directly from the plasma in the gun breech was monitored for each of ...