A control rod K5 of the 10 MW Budapest Research Reactor was damaged in 2004. We have applied both neutron and X-ray radiography to study the distribution of the residual material in the damaged K5. X-ray radiography visualized the main distribution of the residual materials, like different kinds of B4C and water, and the frozen gas bubbles, while neutron radiography displayed the fine structure...

With the development of nuclear industry, spent fuel (SNF) generated from power plants arouses people’s attention as a result its high radioactivity, and how to guarantee reliable operation facilities staff’s safety occupies crucial position. To avoid lethal irradiation, lot functional neutron shielding composites have been developed transform fast neutrons into thermal which can be absorbed wi...

Aluminum magnesium boride (BAM) and boron carbide (B4C) show great promise for engineering applications due to their high strength, hardness, impact resistance along with low mass density. Four BAM-B4C composite specimens (100% BAM, BAM + 10 wt% B4C, 20 50 B4C) produced by spark plasma sintering were characterized using electron microscopy energy dispersive spectroscopy. Mechanical properties s...

The ablation material used during the National Ignition Campaign, a glowdischarge polymer (GDP), does not couple as efficiently as simulations indicated to the multipleshock inducing radiation drive environment created by laser power profile [1]. We investigate the performance of two other ablators, boron carbide (B4C) and high-density carbon (HDC) and compare with GDP under the same hohlraum c...

In situ synthesized TiB2-reinforced TiAl composites usually possess high strength. However, it is very expensive to use B powder to synthesize TiB2 particles. Moreover, the strength enhancement of TiB2/TiAl composite is generally at the cost of plasticity. In this study, in situ dual reinforcement TiB2-Ti2AlC/TiAl composites were fabricated by using B4C powder as the B and C source, which great...

This thesis is a theoretical study of configurational disorder in icosahedral boronrich solids, in particular boron carbide, including also the development of a methodological framework for treating configurational disorder in such materials, namely superatom-special quasirandom structure (SA-SQS). In terms of its practical implementations, the SA-SQS method is demonstrated to be capable of eff...

Regarding titanium matrix composites (TMCs), their properties strongly depend on the reinforcement material employed for manufacturing; this may lead to a multitude of investigations TMCs. Considering diverse typology reinforcement, six types ceramic particles were tested in investigation: B4C, SiB6, TiB2, TiC, TiN, and BN. In order compare behaviour own influence TMCs, same ratio was starting ...

X-ray optical elements are required for beam transport at the current and upcoming free-electron lasers and synchrotron sources. An X-ray mirror is a combination of a substrate and a coating. The demand for large mirrors with single layers consisting of light or heavy elements has increased during the last few decades; surface finishing technology is currently able to process mirror lengths up ...