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X-Ray Radiography of Alumina to Kovar Joining | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 26, Issue 5, 2008, Pages 520-527 PDF (239.48 K) | ||
| DOI: 10.30684/etj.29.5.4 | ||
| Authors | ||
| Abdulhadi K.Jedran; Zareh A.Sarkiss; Selma M.Hussain | ||
| Abstract | ||
| In this work alumina samples were used to be joined with kovar alloy by using different filler types . Fillers were formed with different concentrations of Silver , Copper , and Titanium powdered metals . These fillers where by mixing powders and compacting by hydraulic press , and sintering by tube furnace with argon atmosphere of 1100 oC and time of 60 min. Alumina/Kovar assemblies were joined in vacuum furnace of pressure of 2x10-4 torr at temperature of 850 oC and time of 20 min. .X-ray radiography was used evaluates and detect the defect in contact area Thrtee types of defects were detected namely craqcks , voids and Non uniformity . Shear test was achieved to determine joint strength . Correlation between shear test (destructive test) and X- ray radiography (Non destructive test) was found . | ||
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