Universal Coating and Material Property Measurement ... - Labsys

®The Beta Backscatter Methodis a proven and mature test method thatfor a number of applications is bettersuited than other non-destructive testmethods. Electrical and magnetic propertiesdo not influence the measurement.Measurements can be made on areasas small as 0.12 mm (0.006“) in widthand 1.2 mm (0.05“) in length. Basically,the module BETASCOPE ® can be usedto measure all coatings where the atomicnumbers of coating and substratediffer sufficiently (a minimum of 20 %).These prerequisites are fulfilled for paintcoatings on metal but also for manymetal coatings, such as gold on nickel.For instance, gold coatings can bemeasured in a range of approx. 0.5 µmto 35 µm (20 to 1400 µin), and silvercoatings even from 1 µm to 70 µm(40 to 3000 µin).Module BETASCOPE ® Measurement RangesThe measurement range of the Beta cal coating/substrate combinations. Thebackscatter method is generally determinedmeasurement ranges refer to the so-call-by the energy of the isotope and ed logarithmic range of the correspond-the density of the coating material. In ing isotope, which is the range where thethe table below, suitable isotopes and best measurement precision is obtained.measurement ranges are listed for typi-Isotope PM-147 Tl-204 Sr-90 C-14Coating Substrate Measurement range in µm (mils)Ag, Rh, PdCu, Ni, Fe1.2 - 4.0 5.5 - 22 15 - 70(0.05 - 0.16) (0.22 - 0.88) (0.6 - 2.8) -AlCu, Ni, Fe4.5 - 20 25 -100 90 - 400(0.18 - 0.8) (1 - 4) (3.6 - 16)-AuCu, Ni, Fe0.5 - 2.0 2.5 - 10 5.5 - 35(0.02 - 0.08) (0.1 - 0.4) (0.22 - 1.4)-CdCu, Ni, Fe1.5 - 5.0 7 - 30 15 - 70(0.06 - 0.2) (0.28 - 1.2) (0.6 - 2.8)-CrAl2.0 - 8.0 8.0 - 30(0.08 - 0.32) (0.32 - 1.2)--SnPb(60/40)Cu, Ni, Fe1.1 - 4.5 5.0 - 28 10 - 80(0.04 - 0.18) (0.2 - 1.12) (0.4 - 3.2)-Ni, CuAg, Mo1.5 - 5.0 9.0 - 30 20 - 100(0.06 - 0.2) (0.36 - 1.2) (0.8 - 4)-SnCu, Ni, Fe1.8 - 5.5 7.5 - 35 15 - 100(0.07 - 0.22) (0.3 - 1.4) (0.6 - 4)-ZnFe, Al2.0 - 6.5 4.0 - 30(0.16 - 1.2) (0.16 - 1.2)--PaintNi, Cu, Al11 - 40 50 - 200 80 - 800 3 - 11(0.44 - 1.6) (2 - 8) (3.2 - 32) (0.12 - 0.44)Oil, lubricating filmsCu,Ni, Fe, Al, 1 - 11---Mo, Ag, Au (0.04 - 0.44)7The measuring tables and probes areapplication specific. Hand-held probesare available to measure coatings onbulky specimens, such as large circuitboards, sheet stock, or armatures andfixtures. Other probes are available tomeasure the coating thickness on theinside of tubes. Each measuring tableoperates in conjunction with the appropriateisotope and platen aperture ring.The FISCHER aperture ring is highlywear resistant and features a JEWEL-RING ® platen. Slotted and round aperturesare available. Different measuringprobes, tables and isotopes have beendesigned to cover these varied applications.Universal measuring table Z6NG with small partsaccessory kit and weight pin.Hand probe Z15NG to measure thin coatings (e.g.,paint or primer coatings, oil- or lubricating films)also on cylindrical objects.The angle probe Z11NG in combination with supportstand V12 used to measure the coating thicknessin bushings, pipes, bearing shells, etc. withdiameters of 32 mm (1 1/4“) and up.Measuring table Z14NG to measure the coatingthickness on small parts with universal weight pin.Hand probe Z9NG to measure the coating thicknessof, e.g., armatures, printed circuit boards, sheetmetal, etc..