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The Effects of Nanoparticle Addition on Binder Removal from Injection Molded Aluminum Nitride

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  • The effects of nanoparticle addition on the multi-step debinding of injection molded aluminum nitride (AlN) samples were studied. Experiments varying the solvent debinding conditions (time, temperature and aspect ratio) were performed on monomodal, microscale (μ) and bimodal, micro-nanoscale (μ-n) AlN samples. Variations in the solvent debinding kinetics as a result of the reduced particle size and increased powder content were examined. The bimodal μ-n AlN samples showed a slower solvent extraction of binder components compared to monomodal μ-AlN samples. The activation energy for solvent extraction estimated from diffusion coefficients (Arrhenius equation) was in close agreement with the value estimated by the master debinding curve (MDC) method. An activation value around 50 kJ/mole was estimated by both the methods for μ and μ-n AlN samples. The thermal debinding behavior of dewaxed samples was also studied and the trends correlated with the solvent debinding behavior.
  • Keywords: Master debinding curves, Diffusion coefficients, Solvent debinding, Bimodal, Activation energy, Monomodal
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  • Onbattuvelli, V. P., Enneti, R. K., Park, S., & Atre, S. V. (2013, January). The effects of nanoparticle addition on binder removal from injection molded aluminum nitride. International Journal of Refractory Metals and Hard Materials, 36, 77-84. doi:10.1016/j.ijrmhm.2012.07.003
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  • 36
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