HTP-100 can be deposited on metal, refractory, advanced ceramics, and thermally stable polymeric substrates. Regardless of the type of substrate, minimal surface prep is required. HTP-100 has the primer embedded in the paint formulation, offering a simple one-layer deposition. The coating also results in a hermetic quality seal at the interface between coating and substrate. With HTP-100, no metallurgical bondcoat is needed as phosphate bonding provides robust chemical bonding to the substrate and serves as an effective diffusion barrier against moisture, oxygen, hydrogen, and molten metals.
METAL ALLOYS - OVERVIEW
The use of different grades of steel throughout heavy industrial plants is dictated by material capabilities and economics. HTP-100 coated low grade and inexpensive ferrous alloys typically outperform their higher-grade counterparts, thus offering opportunities for OEMs to lower capital costs by using inexpensive ferrous alloys.
Common uses include:
Nickel and titanium alloys are used for specialty high temperature applications, particularly in the aerospace sector. Protection of these alloys while offering high emissivity characteristics is essential for thermal management. HTP-100 is an effective barrier against oxidation and stable under vacuum conditions without outgassing and thus retains its emissivity.
Molten Aluminum Casting
Non-stick nature of HTP-100 demonstrated on 304 stainless steel, submerged in molten aluminum for 1 hour at 1400°F.
|High Temperature Service
High temperature capabilities demonstrated on 430 stainless steel sheets in humid air for 24 hours at 1800°F, preventing alloy oxidation.
|Carbon Steel (AISI 4140)
Hermetic seal of HTP-100 demonstrated on 4140 carbon steel, exposed to ambient air at 1000°F for 17 hours. No oxidation observed on coated side.
High Temperature Service
Superalloy oxidation protection demonstrated on Inconel 625, coated and exposed to humid air for 1000 hours at 1800°F, showing no oxide scale formed.
Inconel 625 - Uncoated
Uncoated IN 625 after 1000 hours at 1800°F in ambient air (SEM and camera image shown).
Inconel 625 - HTP-100 Coated
HTP-100 coated IN 625 after 1000 hours at 1800 °F in ambient air (SEM and camera image shown).
Molten Salt Exposure
Compatibility of HTP-100 with molten salts demonstrated by exposing coating to molten chloride salt at 1500°F for 72 hours, with no coating degradation.
HTP-100 is an all-purpose coating, and our customers are continuing to find new ways in which it can solve high-temperature and extreme environment material challenges.
HTP-100 can serve as a high-temperature adhesive in certain applications. It can be sprayed on both mating surfaces, which are then joined and fired to 570°F to achieve a durable high temperature joint capable of 1800°F, with at least 100 psi adhesive bond strength.
While welds and brazes can corrode under ambient atmospheric conditions, they are highly susceptible to corrosion in high-temperature plant infrastructure due to their complex morphology and metallurgy. HTP-100 can provide effective galvanic corrosion protection under ambient conditions, and it is especially effective in protecting welds and brazes at high temperatures, where rapid oxidation can weaken the joint significantly
Coated (left) and uncoated (right) 316 stainless steel weld joints, 72 hours at 1500°F in ambient air, with 3 thermal cycles – coating remained intact and protected substrate from oxidation.
Check out demonstrations of uses on our Blog.