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

Ferrous Alloys

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:

  • Preventing Molten Metal Corrosion
    • HTP-100 is stable against non-ferrous molten metals such as aluminum and magnesium which can accelerate corrosion of steels. HTP-100 is a "non-stick" coating.
  • Preventing surface carburization
    • HTP-100 is an effective diffusion barrier against carburization in hydrocarbon gas environments at elevated temperatures.
  • Preventing Steam Corrosion
    • High temperature steam can cause rapid corrosion of ferrous alloys. HTP-100 serves as an effective high temperature diffusion barrier against steam.

Other Alloys

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.


Metal Alloys - Demonstrations

Ferrous Alloys

substrates_moltenaluminum_demos.jpg

Molten Aluminum Casting

Non-stick nature of HTP-100 demonstrated on 304 stainless steel, submerged in molten aluminum for 1 hour at 1400°F.

 


substrates_hightempservice.jpg
High Temperature Service

High temperature capabilities demonstrated on 430 stainless steel sheets in humid air for 24 hours at 1800°F, preventing alloy oxidation.

 substrates_ferrousalloys_demos.jpg 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.

Other Alloys

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.

 

 substrates_otheralloys_demo_a.jpg

Inconel 625 - Uncoated

Uncoated IN 625 after 1000 hours at 1800°F in ambient air (SEM and camera image shown).



substrates_otheralloys_demo_b.jpg

Inconel 625 - HTP-100 Coated

HTP-100 coated IN 625 after 1000 hours at 1800 °F in ambient air (SEM and camera image shown).

 


Refractories & Ceramics - Overview

Lower-Cost Refractories

  • Industrial refractory ceramics are used as thermal insulators and chemical barriers in industries such as fertilizer production, cement manufacturing, and metal casting, with various compositions and porosities depending on end use.
  • High alumina content, dense refractories have the best corrosion resistance and thermal stability of all refractories, but they are expensive.
  • Insulating fire bricks (IFBs) are much cheaper, are better thermal insulators, and are easier to machine and install, but are highly porous and are more susceptible to degradation at high temperatures.
  • HTP-100 protects IFBs from chemical degradation, enabling the use of these low-cost materials in demanding environments, such as molten chloride salts at 1500°F.

Energy Savings

  • A further benefit of applying HTP-100 on refractory ceramics is its high emissivity, which allows the coating to re-radiate heat into the process, generating energy savings and improving thermal uniformity over the refractory surface, thereby preventing hot spots.

Abrasion Resistance

  • The combination of chemical corrosion and mechanical erosion means that refractory ceramics must be replaced frequently due to material loss. HTP-100 protects against both corrosion and erosion, with a mechanically tough and hard coating for long term durability. HTP-100 can withstand typical tool drop impacts.

Chemical Durability

  • Most coatings for industrial refractories are high-pH silicate coatings, which can be hazardous to handle and will react with refractories and the environment at high temperatures, leading to degradation of both the coating and the refractory. HTP-100 is an inert coating that is stable up to 1800°F, due to its highly stable aluminum phosphate matrix.

Crack Sealing

  • HTP-100 can be used to seal cracks in refractory bricks, which can develop over time due to sintering and hot corrosion. HTP-100 is easily applied during maintenance shutdowns, and, once dried, can be cured in service.

Refractories & Ceramics - Demonstrations

Material Description
KX-99 Firebrick Refractory
Basicast 411 Castable Refractory
Express 80 Castable Refractory
Duro™ Type II Acid Refractory
Aluminum Oxide Monolithic Ceramic
substrates_refactoriesceramics_demos.jpg

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.

For more information or to purchase an HTP-100 spray can,

Contact Us