Method for preventing corrosion and hydrogen embrittlement of ta

Details Method for preventing corrosion and hydrogen embrittlement of ta Method for preventing corrosion and hydrogen embrittlement of ta

1981-03-13

1982-10-26

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Maintaining environment nondestructive to metal

252147, 422 7, C23F 1104, C23F 1118

Patent

active

043561489

ABSTRACT:
A method for preventing the corrosion and hydrogen embrittlement of equipment made of tantalum handling therein hot concentrated sulphuric acid at 200.degree. C. or higher, characterized in that at least one oxidizer selected from the group consisting of nitric acid, nitrogen oxides, ferric ion, cupric ion, stannic ion or plumbic ion is incorporated in the sulphuric acid.

REFERENCES:
patent: 4154791 (1979-05-01), Howells et al.

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