7Search.ccinterstitial diffusion mechanisminterstitial diffusion mechanisminterstitial vs substitutional diffusionwhy is interstitial diffusion fasterinterstitial diffusion vs vacancy diffusionvacancy diffusion and interstitial diffusioninterstitial atomic diffusion coefficientstypes of diffusion mechanismmechanism of active diffusioninterstitial knock-off diffusionvacancy vs interstitial diffusionmechanism of facilitated diffusiondiffuse bilateral interstitial infiltrates