本文選題：微弧氧化 + 鈦合金�。� 參考：《材料保護(hù)》2016年08期

【摘要】：為了對(duì)比研究不同主鹽成分對(duì)TC4鈦合金表面微弧氧化膜高溫曝露行為的影響,以相同濃度的Na_2SiO_3、Na_3PO_4、NaAlO_2作為電解液主鹽分別對(duì)TC4鈦合金進(jìn)行微弧氧化處理,對(duì)獲得的陶瓷膜樣品進(jìn)行恒溫氧化和熱沖擊試驗(yàn),分析氧化及熱震試驗(yàn)前后樣品的物相、形貌、膜層厚度和元素成分。結(jié)果表明:陶瓷膜樣品經(jīng)過(guò)750℃/30 h恒溫氧化試驗(yàn)后氧化增重符合拋物線(xiàn)規(guī)律,在Na_3PO_4溶液中形成的膜層有較好的抗氧化性,NaAlO_2中的次之;經(jīng)過(guò)100次650℃水冷至28℃的循環(huán)熱震試驗(yàn)后,3種電解液中獲得的氧化膜破壞程度不同,Na_3PO_4溶液中形成的氧化膜無(wú)剝落,NaAlO_2、Na_2SiO_3溶液中形成的氧化膜都出現(xiàn)剝落現(xiàn)象,其中以Na_2SiO_3溶液中形成的氧化膜剝落最嚴(yán)重;涂層的抗氧化性及抗熱震能力與陶瓷層的表面形貌、厚度及相組成密切相關(guān)。
[Abstract]:In order to compare the effects of different main salts on the high temperature exposure behavior of TC4 titanium alloy surface micro-arc oxide film, the same concentration of Na2SiO _ 3 / Na _ 3SiO _ 4 / NaAlO _ 2 was used to treat TC4 titanium alloy by micro-arc oxidation. The samples were subjected to constant temperature oxidation and thermal shock tests. The phase, morphology, film thickness and element composition of the samples before and after the oxidation and thermal shock tests were analyzed. The results show that the oxidation weight gain of ceramic membrane samples after 750 鈩，

本文編號(hào)：1956200