Excessive porosity after liquid-phase sintering of elemental titanium powder blends
Source abstract
Abstract
The liquid-phase sintering of binary titanium alloys using blended elemental powders has been explored. When silicon or nickel were mixed with titanium powder made by the hydride-dehydride route and sintered under VaCUUM, swelling and excessive porosity were observed if liquid was present and the relative density exceeded 90%. This is attributed to desorption of hydrogen into closed pores, which alters the pressure balance between the sample and the environment and opposes the sintering stress, causing expansion. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Research context
OpenAlex topics: Titanium Alloys Microstructure and Properties · Aluminum Alloys Composites Properties · Powder Metallurgy Techniques and Materials
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