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281) We studied substitution potential by generating a comprehensive summary of potential substitutes for 62 different metals in all their major uses and of the performance of the substitutes in those applications.
2015 Proceedings of the National Academy of Sciences of the United States of America
* On the materials basis of modern society.
- It is indisputable that modern life is enabled by the use of materials in its technologies. Those technologies do many things very well, largely because each material is used for purposes to which it is exquisitely fitted. The result over time has been a steady increase in product performance. We show that this materials complexity has markedly increased in the past half-century and that elemental life cycle analyses characterize rates of recycling and loss. A further concern is that of possible scarcity of some of the elements as their use increases. Should materials availability constraints occur, the use of substitute materials comes to mind. We studied substitution potential by generating a comprehensive summary of potential substitutes for 62 different metals in all their major uses and of the performance of the substitutes in those applications. As we show herein, for a dozen different metals, the potential substitutes for their major uses are either inadequate or appear not to exist at all. Further, for not 1 of the 62 metals are exemplary substitutes available for all major uses. This situation largely decouples materials substitution from price, thereby forcing material design changes to be primarily transformative rather than incremental. As wealth and population increase worldwide in the next few decades, scientists will be increasingly challenged to maintain and improve product utility by designing new and better materials, but doing so under potential constraints in resource availability.
=>可能性のある, 可能な, 潜在力のある, 位置の, 電位の, 潜在的な, ポテンシャル, 可能性, 電位
Overview of noun potential
The noun potential has 2 senses (first 1 from tagged texts)
1. (10) potential, potentiality, potency -- (the inherent capacity for coming into being)
2. electric potential, potential, potential difference, potential drop, voltage -- (the difference
in electrical charge between two points in a circuit expressed in volts)
Overview of adj potential
The adj potential has 2 senses (first 2 from tagged texts)
1. (7) potential, possible -- (existing in possibility; "a potential problem"; "possible uses of
nuclear power")
2. (6) likely, potential -- (expected to become or be; in prospect; "potential clients")
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