CAJ | 학술논문

航空发动机新机交付装机时，发现辅助齿轮箱下磁性检屑器铝合金表面异常，检屑器孔口及内部液体中出现大量白色物质。通过对磁性检屑器异常表面形貌观察、能谱分析、化学滴定法分析确认了磁性检屑器异常表面属碱性介质引起的腐蚀，腐蚀产物为Na、Al形成的盐类物质，以及Al、Mg形成的Al( OH)3、Mg( OH)2的混合物。通过滑油分析、发动机装配情况调查、APC-Ⅰ型水基清洗剂成分分析及加速模拟试验，证明造成磁性检屑器发生腐蚀的介质为装配时进入齿箱的APC-Ⅰ型水基清洗剂。
항공발동궤신궤교부장궤시，발현보조치륜상하자성검설기려합금표면이상，검설기공구급내부액체중출현대량백색물질。통과대자성검설기이상표면형모관찰、능보분석、화학적정법분석학인료자성검설기이상표면속감성개질인기적부식，부식산물위Na、Al형성적염류물질，이급Al、Mg형성적Al( OH)3、Mg( OH)2적혼합물。통과활유분석、발동궤장배정황조사、APC-Ⅰ형수기청세제성분분석급가속모의시험，증명조성자성검설기발생부식적개질위장배시진입치상적APC-Ⅰ형수기청세제。
The aluminium alloy surface of the magnetic chip detector in an aero-engine was found to be abnormal after installation. There was much white material in the porthole and internal liquid. The morphology, energy spectrum analysis, and chemical titration were carried out. The results show that the abnormal surface was caused by corrosion from alkali media, and the corrosion products were saline minerals with Na and Al and mixture including Al(OH)3 and Mg(OH)2. Through analyzing the lube, surveying engine assembly, analyzing composition of the APC-I water base cleaning agent and performing simulation test, it was found the APC-I water base cleaning agent caused the corrosion on the surface of the engine magnetic chip detector.