(Note, all this is based reading, explosives are something I've thoroughly avoided, I like my fingers.)
Nope, ammonium nitrate is a secondary explosive, and as far as I know a rather insensitive one, although how insensitive would depend on what fuel you mix it with. I don't recall if it was mentioned if Takata is mixing it with one. By itself, it's quite insensitive, but in large quantities in worse case conditions has resulted in some of the worst explosives disasters: https://en.wikipedia.org/wiki/Ammonium_nitrate_disasters Note the Texas City one was in theory pure ammonium nitrate (although I wonder if it was pure enough...), many of the others had other stuff contributing, or starting the disaster.
Don't know about sodium azide, but lead azide has been used as a detonator, and therefore a primary explosive as far as I know, in non-corrosive firearms primers for some time (although I think lead styphnate is more popular).
Ammonium nitrate is a preferred explosive component for many classes of users, military, civilian, and terrorist, simply because it's very very cheap, it's also used as fertilizer. Which of course then makes it relatively accessible to the latter class of users, but not in the ideal form, the more surface area, the higher the boom.
Which circles back to the Takata problem, they haven't been able to keep it from turning into a powder, which has the max surface area and turns it into an explosive that turns the air bag into a true, metal fragment and splinter producing bomb.
Nope, ammonium nitrate is a secondary explosive, and as far as I know a rather insensitive one, although how insensitive would depend on what fuel you mix it with. I don't recall if it was mentioned if Takata is mixing it with one. By itself, it's quite insensitive, but in large quantities in worse case conditions has resulted in some of the worst explosives disasters: https://en.wikipedia.org/wiki/Ammonium_nitrate_disasters Note the Texas City one was in theory pure ammonium nitrate (although I wonder if it was pure enough...), many of the others had other stuff contributing, or starting the disaster.
Don't know about sodium azide, but lead azide has been used as a detonator, and therefore a primary explosive as far as I know, in non-corrosive firearms primers for some time (although I think lead styphnate is more popular).
Ammonium nitrate is a preferred explosive component for many classes of users, military, civilian, and terrorist, simply because it's very very cheap, it's also used as fertilizer. Which of course then makes it relatively accessible to the latter class of users, but not in the ideal form, the more surface area, the higher the boom.
Which circles back to the Takata problem, they haven't been able to keep it from turning into a powder, which has the max surface area and turns it into an explosive that turns the air bag into a true, metal fragment and splinter producing bomb.