Interactions between wear and corrosion on cast and sintered Ti-12Nb alloy in comparison with the commercial Ti-6Al-4V alloy

This work investigates the corrosion and tribocorrosion behavior of alpha + beta Ti-12Nb alloy processed by casting and sintering, in 9 g/l NaCl solution at body temperature, and compares the results with the commercial Ti-6Al-4 V alloy. Different electrochemical techniques were used to access the corrosion behavior. Tribocorrosion behavior was studied at open circuit potential under continuous and intermittent sliding, and at anodic potentiostatic condition under continuous sliding. Results revealed that Ti-12Nb alloys presented similar tribocorrosion behavior although the sintered one exhibited a better corrosion behavior. Nevertheless, Ti-6Al-4 V presented better overall degradation resistance than both Ti-12Nb alloys.- This work was supported by FCT national funds, under the national support to R&D units grant, through the reference project UIDB/04436/2020 and UIDP/04436/2020, together with M-ERA-NET/0001/2015, and co-supported by Brazilian agencies CNPq [grants #308.204/2017-4 and #125.954/2018-2] and FAPESP M-ERA-NET [grant #2015/50.280-5], also by MINECO (Spain) through the program PCIN-2016-123 and the Ramon y Cajal project RYC-2014-15014. I. Caha is grateful for a PhD grant under the NORTE-08-5369-FSE-000012 project

Disaster Response in Turkey : Conditions Promoting Cross-Sectoral Collaboration and Implications for Effectiveness

Local and civil society can play decisive roles in disaster response. Yet, the disaster management literature is unclear regarding the conditions that enable cross-sectoral collaboration. Using a collaborative governance framework and 44 semi-structured interviews, this study investigates how trust, pre-existing relations, interdependence, knowledge, and resources affect cross-sectoral collaboration during disaster response in Turkey. The results illustrate how these factors interact with system context factors, like political compatibility, to facilitate or hinder cross-sectoral collaboration. The study concludes that cross-sectoral collaboration is no panacea for successful disaster response but empirical examples suggest that cross-sectoral collaboration can contribute to reducing suboptimal disaster response