Engineering360: "Self-Healing Material Opens Up 'Opportunity' for Carbon Dioxide"

if the material gets scratched or cracked, it would need more than CO2 to "heal". there is another component to this material and without it, it would not heal or fill in the crack. Even if the parent material was rich in the second component, there would still need to be some sort of migration process such as solid state sintering. this sort of solid state atomic migration does not happen at room temperature or even 100C. Maybe after 10,000 yrs or so, but who has that sort of time frame.