Corrosion Effect Analysis of Prepreg Salt Spray Media in Electronic Controller
In order to analyze the corrosion effect of materials and components caused by salt spray intrusion into the electronic controller,the salt spray medium was introduced into the controller.Furthermore,cyclic damp heat test was carried out to analyze the environmental effect of the controller under the above environmental stress.The research found that sodium chloride was deposited on the surface of the circuit board and components inside the controller with no obvious corrosion,and the controller operated normally after 2 hours of salt spray immersion.Then,4 days cyclic damp heat test was conducted with the controller,obvious corrosion of the electronic components was observed and the controller still operated normally.After further testing for 8 days,the corrosion quantity of components increased,and the controller showed abnormal power-on and analog parameters.The fault location analysis of the failed controller was carried out,and the failure components were identified as crystal oscillator and field effect transistor through troubleshooting.After replacing the above failed components,the controller functions normally.
electronic controllerprepreg salt spraycorrosion effect
NETL
NSTL
万方数据
