진학프로석·박사 채용 접수 플랫폼

Czech Technical University in Prague (CTU) offers a fellowship program, the CTU Global Postdoc Fellowship. This new and attractive two-year fellowship-program offers excellent researchers who have recently completed their PhD the chance to continue their research career at CTU. Fellows receive a two year fellowship and become members of a team led by a mentor.

The scholarship applicant must meet the following conditions on the date of application:

• • be no more than 7 years since obtaining the first Ph.D. degree,
• • Ph.D. studies at a university outside the Czech Republic or have completed at least a one-year working research stay abroad (outside the Czech Republic),
• • be an author (co-author) of three or more publications in a journal with IF or CORE A*/A conference paper.

Ensuring the safety and longevity of nuclear reactors requires structural materials that can maintain integrity under extreme thermal, mechanical, and irradiation environments. Current Accident-Tolerant Fuel (ATF) cladding strategies, such as Cr-coated Zr alloys, face challenges due to interdiffusion and phase instability at elevated temperatures, especially the formation of brittle ZrCr₂ Laves phases. Moreover, radiation-induced helium accumulation and swelling continue to undermine coating durability and adhesion.

This project proposes to design and investigate medium-entropy alloy (MEA) interlayers and coatings based on the Cr–Zr compositional system, engineered to stabilize interfaces and enhance radiation resistance under hydrogen and heavy ion irradiation. By tuning chemical disorder and lattice strain within the MEA structure, we aim to suppress interdiffusion, promote defect recombination, and mitigate radiation defect formation.

The study will combine ion irradiation experiments (He⁺, H⁺, and Fe²⁺) with advanced microstructural characterization (TEM, FIB, EBSD, APT) to elucidate the atomic-scale mechanisms governing interface stability and helium transport. The ultimate goal is to establish design principles for radiation-tolerant Cr-Zr-based MEA coatings, contributing to the next generation of high-performance ATF claddings that ensure enhanced safety and extended service life in nuclear reactors.