ECM Test Chamber Using Condensation for Accurate Migration Analysis
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Solution Overview
Problem
Existing electrochemical migration testing methods fail to account for the condensation phase, which is a crucial factor influencing the ECM process, leading to inaccurate results in certain analyses.
Innovation Solution
A device that simulates condensation by placing the test liquid inside the test chamber, allowing for controlled heating and monitoring of temperature and humidity, with a deflector above the sample to prevent accidental liquid dripping, ensuring accurate ECM testing under real-world conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the water drop test method is used to form electrolyte by direct deposition, then the testing process is simple and fast, but the condensation phase is omitted which is an important influencing factor of ECM
Solution Approach 1:
The patent utilizes the phase transition of water from liquid to vapor to condensation to form the electrolyte layer. The test chamber is heated to evaporate water, which then condenses on the substrate to form a thin electrolyte layer, thereby incorporating the condensation phase that was omitted in traditional water drop tests.
Solution Approach 2:
The patent replaces the mechanical water deposition method with a thermal field-based method. Instead of mechanically dropping water, the system uses heating to create evaporation and subsequent condensation, substituting mechanical action with thermal field control to achieve electrolyte formation.
2Reliability
If the substrate is placed in a climatic chamber or humidity box to form electrolyte by condensation, then the condensation phase is included, but the testing environment becomes complex and time-consuming
Solution Approach 1:
The patent merges the electrolyte formation process with the testing chamber environment. The test chamber itself serves as both the enclosure and the heating source, combining the functions of environment control and electrolyte generation into a single integrated system rather than requiring separate climatic chambers.
Solution Approach 2:
The system uses its own heating function to create the evaporation and condensation process. The heating element within the test chamber directly causes water evaporation and subsequent condensation on the substrate, making the system self-sufficient without requiring external climatic chambers or humidity boxes.
3Device complexity
If manual water dripping is used in the water drop test, then the setup is simple, but errors are caused by manual manipulation
Solution Approach 1:
The patent replaces manual mechanical water dripping with a thermal field-based electrolyte formation process. Instead of manually controlling water deposition, the system uses heating to create evaporation and condensation, eliminating human error in water application while maintaining simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device provides rapid, reliable, and cost-effective ECM testing by replicating real-world condensation conditions, reducing testing time and economic costs while maintaining high accuracy.
Implementation Method 1
a controllable heating device (5) for heating the test liquid (4)
Implementation Method 2
The formation of the electrolyte that is carried out by direct deposition of a liquid between the electrodes is called water drop test
Data Source
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AI summary
The device comprises a test chamber (1) closable by a lid (2), at the bottom of which there is a test liquid (4), near which is located a controllable heating device (5). Above the level of the test liquid (4), in the environment of the test chamber (1), a height- and angle-adjustable carrier of the tested sample (8) is located. The device is provided with a power cable (8.1) for connecting the tested sample (8) to a voltage source (11). It is advantageous if the device is equipped with at least some temperature and/or humidity sensors, which are interconnected with a control and evaluation unit (13). It is advantageous if a deflector is placed in the space above the tested sample (8) with an area larger than the area of the tested sample (8).