共搜索到17条信息，每页显示10条信息，共2页。用时：0小时0分0秒457毫秒
; phosphate-permanganate 1 Introduction As a green engineering material, magnesium alloys have many advantages and are widely used as structural materials for automobiles and aircrafts[1]. However... issues[6-7]. One of the effective alternatives is phosphate-permanganate conversion technology for magnesium alloys. HAWK et al[8] studied the phosphate-permang anates conversion coatings......
pickling-activation process was proposed as an environmental friendly pretreatment method in phosphate-permanganate solution before electroplating on magnesium alloys. The effects of pickling-activation... 4-6 phosphate-permanganate solution for 3-5 min. The adhesion and corrosion resistance of copper plating are enhanced. The one-step pickling-activation can replace the existing two-step process of acid......
on magnesium alloy such as chromate, phosphate, stannate, rare-earth, phosphate-permanganate and phytate were reviewed. The emphasis on the mechanism of the formation and the processes of the phosphate...镁的氟化物,膜厚为4~6 μm.这种膜层为微孔结构,与基体结合牢固,具有良好的吸附性,其耐蚀性与铬化膜相当,可以用作镁合金加工工序间的短期防蚀或涂漆前的底层. 表2 几种磷酸盐/高锰酸钾化学转化处理工艺[12, 14?15, 17?19] Table 2 Processes of several phosphate/potassium-permanganate......
covered conversion coatings including earth conversion coatings[10-12], stannate coatings[13-14], phosphate-permanganate conversion coatings[15-17], manganese phosphate coating[18] and zinc phosphate.... A phosphate-permanganate conversion coating for magnesium [J]. Met Finish, 1995, 93(10): 34-37. [16] ZHAO M, WU S, LUO J R, FUKUDA Y, NAKAE H. A chromium-free conversion coating of magnesium alloy......
contact between paint and metal surface. Several studies of chromate conversion coating, stannate conversion coating, cerium conversion coating and phosphate-permanganate coating were focused... conversion coating and electroless nickel layer [J]. Corros Sci, 2004, 46(6): 1467-1477. [6] HAWKE D, ALBRIGHT D L. A phosphate-permanganate conversion coating for magnesium [J]. Met Finish, 1995, 93(10......
the conventional zinc sulfate solution is used for zincate. It consists of the zinc oxide, sodium hydroxide, ferric chloride and potassium sodium tartrate. A phosphate- permanganate solution and zinc...], phosphate- permanganate[9, 50], molybdate[51] and other conversion coatings[52-54] are among the concrete examples. ELSENTRIECY and AZUMI[51] developed an environment-friendly chemical conversion......
treatments on the surface of magnesium alloy. Phosphate coatings of Mg3(PO4)2 were obtained in phosphate-permanganate baths[11-13]. HAN et al[3] obtained a phosphate coating of Mn3(PO4)2 on AZ3lD magnesium.... [11]Hawke D, Albright D L. A phosphate-permanganate conversion coating for magnesium [J]. Met Finish, 1995, 93(10): 34-38. [12]Umehara H, Takaya M, Terauchi S. Chrome-free surface treatments......
phosphate[14-17], phosphate-permanganate[18-19], stannate[19-23], vanadate[24], cobalt(Ⅲ) hex coordinated complex[25], cerate[26-29] or lanthanite[27] or praseodymate[27] and others. Although.../permanganate conversion coating on AZ31 magnesium alloy [J]. J Electrochem Soc, 2006, 153(3): B90-B96. [15] KOUISNI L, AZZI M, ZERTOUBI M, DALARD F, MAXIMOVITCH S. Phosphate coatings on magnesium alloy AM60......
] 吴纯素.化学转化膜[M]. 北京: 化学工业出版社, 1988: 1?5.WU Chun-su. Chemical conversion film[M]. Beijing: Chemical Industry Press, 1988: 1?5. [6] Hawke D, Albright D L. A phosphate-permanganate conversion coating......
. A chromium-free conversion coating of magnesium alloy by a phosphate-permanganate solution [J]. Surf Coat Tech, 2006, 200: 5407-5412. [4] KOUISNI L, AZZI M, ZERTOUBI M, DALARD F,MAXIMOVITCH S. Phosphate coatings on magnesium alloy AM60. Part 1. Study of the formation and the growth of zinc phosphate films [J]. Surf Coat Tech, 2004, 185: 58-67. [5] SHARMA A K, SURESH M R, BHOJRAJ H, NARAYANAMURTHY H......
