Authors: Ismail Unver H Ozkan Gulsoy Bulent Aydemir
Publish Date: 2013/09/17
Volume: 22, Issue: 12, Pages: 3735-3741
Abstract
In this work porous Ni625 superalloys were produced by use of a water soluble pore forming agent prior to sintering Carbamide particles were used as the spaceholder materials After mixing and compaction the spaceholder particles were extracted using warm water leaching over a range of temperatures The porous green parts were subsequently thermally debinding to remove the paraffin wax under a pure Argon atmosphere and subsequently sintered at high vacuum The effects of volume fraction of spaceholder particles on density porosity and elastic modulus were investigated Microstructures were captured using optical and scanning electron microscopy Pore size was quantified using image analysis software integral to the scanning electron microscopy In addition compression tests were conducted on the sintered samplesThis study was supported by Scientific Research Projects Coordination Unit of MarmaraUniversity Project number FENCDRP0905120172 The authors are grateful to TUBITAK—National Metrology Institute and Sandvik Osprey Ltd for their financial support and the provision of laboratory facilities
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