Pesquisadores de Hong Kong desenvolvem aço inoxidável ultraresistente para hidrogênio verde

Uma equipe da Universidade de Hong Kong criou uma nova liga de aço inoxidável que resiste à corrosão na eletrólise da água do mar. O material pode substituir componentes caros de titânio em sistemas de produção de hidrogênio.

A liga, conhecida como SS-H2, foi desenvolvida sob a liderança do professor Mingxin Huang, do Departamento de Engenharia Mecânica. Ela utiliza uma estratégia sequencial de passivação dupla, formando uma camada de óxido de cromo seguida por uma proteção à base de manganês que resiste a potenciais de até 1700 mV. Essa abordagem supera as limitações do aço inoxidável convencional, que falha em torno de 1000 mV durante a oxidação da água em ambientes ricos em cloretos.

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