TY  - JOUR
AU  - Wei, Shaolou
AU  - Ma, Yan
AU  - Raabe, Dierk
TI  - Reactive vapor-phase dealloying-alloying turns oxides into sustainable bulk nano-structured porous alloys
JO  - Science advances
VL  - 10
IS  - 51
SN  - 2375-2548
CY  - Washington, DC [u.a.]
PB  - Assoc.
M1  - PUBDB-2024-08088
SP  - eads2140
PY  - 2024
AB  - For millennia, alloying has been the greatest gift from metallurgy to humankind: a process of mixing elements, propelling our society from the Bronze Age to the Space Age. Dealloying, by contrast, acts like a penalty: a corrosive counteracting process of selectively removing elements from alloys or compounds, degrading their structural integrity over time. We show that when these two opposite metallurgical processes meet in a reactive vapor environment, profound sustainable alloy design opportunities become accessible, enabling bulk nanostructured porous alloys directly from oxides, with zero carbon footprint. We introduce thermodynamically well-grounded treasure maps that turn the intuitive opposition between alloying and dealloying into harmony, facilitating a quantitative approach to navigate synthesis in such an immense design space. We demonstrate this alloy design paradigm by synthesizing nanostructured Fe-Ni-N porous martensitic alloys fully from oxides in a single solid-state process step and substantiating the critical kinetic processes responsible for the desired microstructure. 
LB  - PUB:(DE-HGF)16
C6  - pmid:39693426
UR  - <Go to ISI:>//WOS:001380638700004
DO  - DOI:10.1126/sciadv.ads2140
UR  - https://bib-pubdb1.desy.de/record/620005
ER  -