Yes, that is a major factor in aging of chips. But giving a number for this is very difficult, as it varies on a lot of parameters. Quite a lot depends on the p

Yes, that is a major factor in aging of chips. But giving a number for this is very difficult, as it varies on a lot of parameters. Quite a lot depends on the process the chip was manufactured with. Older processes with larger feature sizes usually are less affected than modern processes with smaller structures. But almost all details of processes are confidential and available under NDA only, so not openly published. Also, it depends on the concrete designs. That is, why the carrier migration is simulated as part of the modern design process. Of course, also the operation conditions play a role. The hotter the chip is and the higher the operation voltage, the quicker the diffusion happens.