Effects of nano-additive TiO_2 on performance of micro-arc oxidation coatings formed on 6063 aluminum alloy  

TiO_2纳米添加剂对6063铝合金微弧氧化陶瓷涂层性能的影响(英文)

作　　者：李红霞[1] 宋仁国[2] 季振国[1] 

机构地区：[1]杭州电子科技大学材料与环境工程学院,杭州310018 [2]常州大学先进金属材料常州市重点实验室,常州213164

出　　处：《Transactions of Nonferrous Metals Society of China》2013年第2期406-411,共6页中国有色金属学报（英文版）

摘　　要：Ceramic coatings were fabricated on aluminum doped with different concentrations of TiO2 nano-additive. alloy substrates by micro-arc oxidation （MAO） in silicate electrolytes Effects of nano-additive concentration on the structural and mechanical properties of the MAO coatings were analyzed. The results revealed that some nano-particle were incorporated into the resulting coating during the MAO process, while there was a reasonable concentration for the TiO2 nano-additive. With increasing the nano-additive concentration to 3.2 g/L, the adhesion value increased, while mean friction coefficient and mass loss decreased. A further increase of nano-additive deteriorated the adhesion and mean friction coefficient values, which was consistent with the micro-hardness tests.通过在硅酸盐电解液中加入TiO2纳米添加剂,研究纳米添加剂浓度的变化对6063铝合金微弧氧化陶瓷涂层性能的影响。结果表明,纳米添加剂进入到陶瓷涂层中,而添加剂浓度的选取有一个较合理的范围。随着纳米添加剂的浓度增加到3.2g/L,涂层的结合力逐渐增大,平均摩擦因数和质量损耗逐渐减小。当浓度增加到4.0g/L时,涂层的结合力减弱,而平均摩擦因数增加,这与涂层显微硬度的测试结果一致。

关 键 词：Al alloy micro-arc oxidation NANO-ADDITIVE micro-hardness friction and wear 

分 类 号：TQ174.1[化学工程—陶瓷工业]