(東北大學(xué) 材料與冶金學(xué)院， 沈陽(yáng) 110006)
摘 要: 通過(guò)水化實(shí)驗(yàn)，對(duì)稀土硅化物合金中逸出的PH3氣體進(jìn)行了定性與定量分析。采用S300型掃描電子顯微鏡，分析了含P稀土硅化物合金的微觀結(jié)構(gòu)及P元素的分布特點(diǎn)，研究了稀土硅化物合金中PH3氣體的逸出現(xiàn)象與P元素存在形態(tài)的關(guān)系。結(jié)果表明：合金中只有少量的P以氣體形式放出，大部分的P仍穩(wěn)定地存在于水化后的合金中；合金中PH3氣體的放出與合金中的RESi2相關(guān)系密切。
關(guān)鍵字: 稀土硅化物合金； PH3氣體； 逸出
（School of Material and Metallurgy, Northeastern University,
Shenyang 110006, P.R.China）
Abstract:To determine the evolution of PH3 gas from the rare earth(RE) silicide alloy, the qualitative and quantitative analyses of PH3 were done by water-reaction experiment. With S300 SEM, the microstructure of P contented in RE silicide alloy and the distribution character of P element in alloy were studied, and the relationship between PH3 gas evolution phenomenon and the existential state of P element in the alloy were discussed further. The results demonstrate that only a little P is released as gas, most of P exists steadily in the alloy after immersed in water, and the evolution of PH3 gas is closely related with the RESi2 phases in the alloy.
Key words: rare earth silicide alloy; PH3 gas; evolution
