(東北大學(xué)材料與冶金學(xué)院， 沈陽110006昆明理工大學(xué)冶金系， 昆明 650093
)
摘 要: 利用熱力學(xué)數(shù)據(jù)計(jì)算并繪制了Ni-P=H2O系電位-pH圖， 根據(jù)電位-pH圖分析了電沉積Ni-Mo和Ni-Mo-P合金鍍層的電化學(xué)行為； 利用X射線衍射測試了Ni-Mo和Ni-Mo-P鍍層在鍍態(tài)下的物相組成。 熱力學(xué)分析表明： Mo和P都難以單金屬的形式沉積， 它們必須和其它金屬以誘導(dǎo)共沉積的方式才能沉積出來； P， Ni能以金屬間化合物Ni3P的形式在陰上沉積； Mo以兩種形式進(jìn)入陰極， 一種為以MoO3固體顆粒復(fù)合電鍍進(jìn)入鍍層， 另一種為以金屬間化合物的形態(tài)沉積。 X射線衍射分析表明， P以Ni3P， Mo以MoO3與MoC的形式存在于鍍層中， 這一結(jié)果與熱力學(xué)分析結(jié)論相一致。
關(guān)鍵字: 鍍層 熱力學(xué) 電化學(xué)行為 Ni-Mo Ni-Mo-P
ELECTRODEPOSITED Ni-Mo AND Ni-Mo-P ALLOY
（School of Materials & Metallurgy, Northeastern University, Shenyang 110006, P. R. ChinaKunming University of Science and Technology, Kunming 650093, P. R. China
）
Abstract:The potential-pH diagram of Ni-P-H2O system was drawn by thermodynamical data, the electrochemical actions of electroplating Ni-Mo and Ni-Mo-P alloys were analyzed. The phases of Ni-Mo and Ni-Mo-P coatings were studied by means of XRD. The results showed that it is difficult to deposit Mo and P as single metal but they can be co-deposited by inducing deposition with other metals, P and Ni are deposited in the form of intermetallic compound; Mo is deposited in the cathode by two forms, one is the form of MoO3 solid particles and the other is the form of intermetallic compound. The XRD analysis is in agree with the thermodynamic analysis.
Key words: deposit thermodynamic electrochemical action Ni-Mo, Ni-Mo-P
