热电法在表征涡轮叶片渗铝硅层厚度中的应用  

Aluminized Silicon Layer Thickness of Turbine Blade Characterized by Thermoelectric Method

作　　者：熊瑛[1] 张海军[2] 赵秀梅[1] 段建刚[1] 

机构地区：[1]沈阳黎明航空发动机(集团)有限责任公司,沈阳110043 [2]中国人民解放军驻沈阳黎明公司军事代表室,沈阳110043

出　　处：《航空制造技术》2016年第12期105-109,共5页Aeronautical Manufacturing Technology

摘　　要：选取工作300h的涡轮叶片和新品叶片制作试样,试样提供了不同的渗铝硅层厚度,采用热电法和金相法分别对试样上同一位置进行检查,热电法记录该位置处热电势值,金相法测量该位置截面的渗铝硅层厚度,对一系列实测数据进行分析,得到随渗铝硅层厚度增大热电势值相应减小的变化规律,随后对热电检查的外部影响因素进行了试验分析,并结合部分试样给出热电势值随温度、异物、探头角度等改变带来的误差规律。Samples which were maked by work 300 h of turbine blades and new blades provided different aluminized silicon layer thickness.Thermoelectric and metallographic method respectively were used at the same location on sample inspection, thermoelectric method was used to record the location potential value, metallographic method was used to measure the location of the aluminized silicon layer thickness. On the basis of analysis of a series of testing data, the change rule which the thermoelectric potential value corresponding decrease with the aluminized silicon layer thickness increased is concluded, then the external influence factors of thermoelectric inspection were analyzed by tests, and combined with some samples the law of measurement error of thermoelectric potential value which changed with temperature, foreign matter, the probe angle is given.

关 键 词：渗铝硅层厚度 热电法 热电势 金相法 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]