However,
these methods do not lend themselves for applications on-site, where
anticorrosive protective coatings are typically applied. In addition, the
HVOF process generates temperatures far above the melting temperatures
of zinc and aluminium, which can cause excessive
oxidization of sprayed materials. An alternative is HVAF, which has
lower flame temperatures as it runs on compressed air, has a simpler
overall design because no water cooling is needed and consequently,
has lower running costs. HVAF can also be applied for thermal
spraying of various materials.