TC4合金表面高温氧化行为分析  

Analysis on High Temperature Oxidation Behavior of TC4 Alloy Surface

作　　者：吕彦兴[1] 李建霞[2] 刘海妹[1] 

机构地区：[1]河北化工医药职业技术学院,河北石家庄050026 [2]燕山大学,河北秦皇岛066004

出　　处：《铸造技术》2014年第7期1465-1467,共3页Foundry Technology

摘　　要：利用多道次搅拌摩擦焊搭接技术在TC4钛合金表面形成450μm厚的铝涂层,并分别对基体和涂层试样进行大气环境下650℃的高温氧化实验,对其组织形貌进行分析。结果显示,利用搅拌摩擦焊得到的涂层与基体的中间层是厚度超过55μm的富Ti条带状组织,表层铝被氧化后能阻止氧原子向基体内部扩散,并促进中间层的形成。The aluminum coating with the thickness of 450 μm was formed on the TC4 titanium alloy surface by multi-pass stirring friction welded lapping technology, the high temperature oxidation experimental of the matrix and the coating samples were conducted at 650 ℃ in atmospheric environment, and the structure morphology was analyzed. The results show that the interlayer of matrix and coating obtained by stirring friction welded is rich-Ti banded structure whose thickness is more than 55 μm, the oxidized aluminum at the surface can stop the spread of the oxygen atoms to matrix inside, and promote the formation of the interlayer.

关 键 词：钛合金 中间层 表面涂层 摩擦焊 

分 类 号：TG146.23[一般工业技术—材料科学与工程] V261.93[金属学及工艺—金属材料]