YBa_2Cu_3-O_7超导相的水解反应

Interaction Between Superconducting YBa 2 Cu 3 O 7 Phase and Water

超导相ＹＢａ２Ｃｕ３Ｏ７与水发生强烈反应．反应产物为ＣｕＯ，Ｂａ（ＯＨ）２和Ｙ２ＢａＣｕＯ５，并放出氧气．这主要是因为超导相中存在Ｃｕ３＋离子．环境中水气氛的存在将大大影响ＹＢａ２Ｃｕ３Ｏ７超导性．

The superconducting YBa 2 Cu 3 O 7 phase is highly sensitive to water and water vapor,The YBa 2 Cu 3 O 7 phase decomposes in water to CuO,Ba(OH) 2 and Y 2 BaCuO 5 and evolves oxygen. This is probably due to the presence of nonequilibrium Cu 3+ ions in this compound. The superconductivity of YBa 2 Cu 3 O 7 samples is greatly degraded by the interaction with water and humid air.