Deep-Sea Pressure Affects Titanium Film: Initial Growth and Long-Term Weakening Revealed

Published: Apr 23, 2026 12:06

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[SMM Titanium Express] Ningbo Institute of Materials research reveals dual effect of deep-sea hydrostatic pressure on titanium passive film: initial high pressure accelerates film growth for better protection, but long-term pressure induces local crystallization of amorphous film into metastable TiO phase, with grain boundaries becoming ion channels that weaken self-healing ability. This provides theoretical support for composition optimization and surface protection design of deep-sea titanium alloys

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