Preliminary Study And Measurement Of Cutting Tool Coating Thickness By Using Alpha Thickness Gauging Method

Nurazlina , Ibrahim (2010) Preliminary Study And Measurement Of Cutting Tool Coating Thickness By Using Alpha Thickness Gauging Method. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Coatings thickness of cutting tool perform a variety of important functions including protecting and improving the performance in machining. Accurately, measuring the thickness of these coatings helps maintain product quality and control production costs. These projects are preliminary study and measure the cutting tool coating thickness by using Alpha Thickness Gauging Method. This project highlights the consideration of effects on the accuracy of measurement when using this method. Radioactive material used in the experiments is Radium-226 and Americium-241, while the coating material to be measured is made of Aluminum Titanium Nitride (TiAIN). There have 10 types of cutting tools that used in different coating thickness to be measured. Measurement readings are displayed on the Gieger Muller Counter which records the number of particles detected by Counter Tube - Type B. All measurement data is recorded in the table and based on the data, the graph was plotted to compare the accuracy of the measurement reading between Alpha Thickness Gauging Method and destructive method of Scanning Electron Microscope (SEM). Verification was performed on the graph to determine the accuracy of the measurement readings obtained from the experiment using a sample of unknown coating thickness. Results showed that the use of radioactive material Americium-241 can produce better measurement readings than the use of Radium-238. During the experiment carried out several factors that have affected the accuracy of the measurement readings were detected. In future study, these factors can be improved in order to produce more accurate measurement readings.

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