Study And Measurement Of Cutting Tool Coating Thickness By Usign Beta Thickness Gauging Method
There are many types of methods in measuring the coating thickness. One of the methods is by using Beta Thickness Gauging method. The purpose of this study is to determine the thickness of cutting tool coating by using the beta (β) backscattering gauging technique. The intensity of the backscatte...
| Summary: | There are many types of methods in measuring the coating thickness. One of the
methods is by using Beta Thickness Gauging method. The purpose of this study is to
determine the thickness of cutting tool coating by using the beta (β) backscattering
gauging technique. The intensity of the backscattered beta particle radiations of
Srontium-90 (Sr-90) and Cobalt-60 (Co-60) is related to the thickness of material
coating on the base material of cutting tool. With a fixed measuring geometry, the
radioactive sources and base material, the intensity of backscattered beta particle is
dependent on the coating thickness. The results were compared with the methods and
sources of thickness measurement. There are several parameters that involved in this
measuring process, such as thickness, angle of source holder and source detector over
the surface, distance between specimen and source, and other. Value of cutting tool
coating thickness is measured by using GM (Geiger-Müller) counter instrument that can
detect a single particle of ionizing radiation, and also by using backscattering technique. |
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