Special Coatings & Glue
Products for very special applications
Cera Glue AA
Cera Glue AA is a fiber-free, ready-to-use, water-based, high-temperature-use (up to nearly 1500 C [2732 F]) bonding glue for Alumina-to-Alumina or for bonding high-Alumina content ceramics to one another. Cera Glue bonds parts together dramatically, creating a strong adhesive connection of the pieces. Also this glue can be used with dense or porous surfaces: just apply two coats to both faces to be bonded, drying between each coating at room temperature or at 60 C, followed by heating up to at least 1500 C in any atmosphere for around ½-2 hours. NOTE that this product DOES NOT contain Boron Nitride.
- Specifically designed for Alumina-to-Alumina or for high-Alumina parts
- Usable to nearly 1500 C, higher than other bonding agents
- Glue is highly stable/unreactive with many materials – even molten ones
- Provides very strong joining of parts
- YAG (YAG, 3Y2O3*5Al2O3) based, phosphate-refractory bonded
- Contains no RCF (Refractory Ceramic Fiber)
- Water-based – easy cleaning and diluting if needed
- Bonding parts
- Glue-repair of broken or chipped ceramic/refractory parts
- Hermetically sealing tubes and bonded parts
- Creating large complex parts from separately sintered components
Link to PDF datasheet: Cera Glue AA
Cera Glue Sealcoat
Cera Glue – Sealcoat is a water-based coating that can glue ceramic pieces as well as forming a vitreous impervious seal on most ceramics that withstands thermal cycling. This product requires a one-time bake-on at 800-850 C for ½ to 1 hour for use up to nearly 800 C (1472 F).
- Bonds ceramics
- Vitreous layer of non-silica ‘glaze’
- Applied like house paint
- Safe, water-based
- Gluing ceramic pieces and boards
- Sealing ceramic surfaces from gaseous
Link to PDF datasheet: Cera Glue Sealcoat
Type T
Type T is a relatively-soft, washcoat-type of Titanium Carbide coating that provides a high-purity (>99% ) layer which is usable in vacuum and inert atmospheres to >2000 C (>3632 F). This coating should NOT be used in air atmospheres.
- Very stable coating on Graphite substrates
- Stops Graphite diffusion into parts or topcoatings
- Applies like housepaint – brush, dip, or spray
- Safe, Water-Based
- Coating Graphite crucibles, molds, and trays
- Barrier coating to carbothermic reduction of oxide coatings in vacuum (typically extends use-temperatures of oxide topcoatings by 100-200 C)
Link to PDF datasheet: Traycoat-A-Aerosol-Brushable
Type G
Type G is a Gadolinium Oxide coating which uses very high purity (99.99%) Gd2O3 with a minimal amount of cellulosic binder to allow easy paintability and adherence with typical use-temperatures being near room temperature. However, the coating can be used also as a washcoat (low adherence) coating in the same fashion as our Type Y (Y2O3) coating, only in vacuum/inert atmospheres when
use-temperatures exceed 200 C (392 F). Type G is considered a “neutron absorber coating” and, as such, can be milled with Aluminium Oxide cylinders/balls to give smaller particles, if desired for such application.
- High thermodynamic stability
- Applies like house paint – brush, dip, or spray
- Gadolinium has the highest thermal neutron absorption cross section of any naturally occurring element
- Neutron capture
- Nuclear applications
- Barrier coating to interactions during heat treating
Link to PDF datasheet: Type G
Type E
Type E is a relatively-soft, washcoat-type of Erbium Oxide (Y2O3) coating which provides a very-high-purity (99.99%) Er2O3 layer that is usable in vacuum and inert atmospheres to 2000 C (3632 F). This coating can be used instead of Type Y (Y2O3) whenever Yttrium is not desired, yet the properties of Y2O3 are needed. Type E should NOT be used in air atmospheres.
- Maintains Consistent Carbon Contents of Sintered Parts
- Prevents Warping
- Extends Tray Lifetime
- Reaction-barrier Layer
- Easy-to-Use, Fast-Drying, Solvent Based
- Graphite Trays/Boats for Cobalt-bonded WC, TiC, TaC Parts
- Carbon Barrier/Separator Layer
- Rare Earth Magnets
- Reactive Refractory Metal Sintering
Link to PDF datasheet:Type E
Zypcoat HTO
Zypcoat® HTO is a water-based coating of Hafnium Oxide (HfO2) and Titanium Oxide (TiO2) blended in the molar ratio 2/3 HfO2 to 1/3 TiO2, which allows the formation of a special solid solution of Hf-Ti-O that has the very unique expansion (CTE, coefficient of thermal expansion) property of near zero expansion 1 . The Zypcoat HTO (66.7HfO2 * 33.3TiO2 leads to a solid solution that is a stable solid to over 2000 C with no polymorphic transormation: the solid solution exhibits electrical resistivity of circa 7×106 Ω-cm 2. Also, the Zypcoat HTO yields a well-bonded coating when applied to most highly-refractory substrates and is non-reactive with many ceramics and alloys, solid or molten. After heating to 1300 C – 1600 C on an Alumina substrate, the coating is over 97% HfO2 – TiO2, with the remainder being Al2O3, which is most likely also in solid solution with the Hafnia/Titania.
1. S. R. Skaggs, “Zero and Low Coefficient of Thermal Expansion Polycrystalline Oxides, ” Report LA-6918-MS, Los Alamos Scientific Laboratory of the University of California, Los Alamos, New Mexico (1977).
2. C. E. Holcombe, M. K. Morrow, D. D. Smith, and D. A. Carpenter, “Survey of Low Expanding High Melting Mixed Oxides,” Report Y-1913, Union Carbide Oak Ridge Y-12 Plant, Oak Ridge, Tennessee (1974)
- Non-reactivity with many solid or molten metals/alloys
- Use temperature estimated to be 2000 C in all atmospheres
- On heat up to 1300 C – 1600 C, forms unique solid solution of HfO2 – TiO2
- Aerospace, nuclear, and demanding applications
- Barrier coating to prevent diffusion, reactions, and sticking of parts during heat treatin
- Very-high-temperature areas
Link to the PDF Datasheet: Zypcoat HTO
Zypcoat ITO
Zypcoat® ITO is a 90% In2O3, 10% SnO2 coating that provides unique properties of electrical conductivity as well as low thermal conductivity along with refractoriness and stability. Zypcoat ITO yields a well-bonded Indium Tin Oxide coating when applied to ceramic substrates – allowing a high-purity ITO phase in a paintable coating for applying relatively thick layers (>2 mils or >50 micrometers) thickness that are usable to high-temperature.
- Electrically conductive with use to 1000 C
- Low thermal conductivity
- Reportedly low emissivity
- Whenever electrically conductive, refractory coatings are desired
Link to the PDF Datasheet: Zypcoat ITO
Zypcoat CZO
Zypcoat® CZO is based on a lesser-known mixed oxide – namely Calcium Zirconate or Calcium-Zirconium-Oxide, CaZrO₃, which has melting point of 2325 C. Zypcoat CZO forms 100% CaZrO₃ on heating over 500 C. It is usable in air atmospheres as well as inert/vacuum to temperatures to >2000 C, while bonding well to all substrates – ceramic, graphite, metal. Due to its high melting point and expected high stability with most materials, Zypcoat CZO is suitable for R&D studies at extreme temperature and conditions.
- Unique compound of CaO and ZrO₂
- Very high temperature melting point and use-temperature
- Expected low thermal and electrical conductivity
- Usable in all atmospheres
- Water-based, easy to use and cleanup
- High-Temperature Ceramics (HTC) research/development
- Testing in extreme environments
- Reactive-molten metal processing
- Barrier coating to prevent interactions
Link to PDF datasheet: Zypcoat CZO
Cera Glue GG
Cera Glue GG is a fiber-free, ready-to-use, water-based, bonding glue for Graphite-to-Graphite or for bonding Silicon Carbide ceramics to one another. Cera Glue GG bonds parts together dramatically, creating a strong adhesive connection of the pieces. Apply glue to both faces to be bonded and place them together while still wet; then dry the pieces thoroughly at room temperature (i.e., overnight) and/or at 60 C. To achieve the bond, Cera Glue GG requires a one-time bake-on at >= 800 C (>= 1472 F) for ½ hour.
- Specifically designed for Graphite-to-Graphite or for SiC-SiC
- Usable to nearly 1000 C in air
- Protects Graphite from oxidation
- High Emissivity
- Withstands cyclic use
- Contains no RCF (Refractory Ceramic Fiber)
- Water-based – easy cleanup
- Bonding parts that would be difficult to make as monolithic
- Glue-repair of broken or chipped Graphite or SiC parts
- Sealing surfaces, fissures, gaps
Link to PDF datasheet: Cera Glue GG
Cera Glue Bondcoat
Cera Glue BondCoat is a water-based paste that can glue/bond high-temperature ceramics, such as high-density Zirconium Dioxide and Silicon Carbide, as well as Boron Nitride. This product requires a one-time bake-on/bonding heat treatment at 1300-1500 C for 1/2 to 1 hour in an atmosphere compatible with the material being bonded (i.e., air, nitrogen, argon, etc.).
- Bonds dense refractory ceramic of ZrO2, SiC, BN
- Bonded material can be used at temperatures up to the bonding heat-treatment temperature
- The bond/glue is stable with many materials and provides very strong joining of parts
- Applies smoothly and spreads easily
- Safe, water-based
- Gluing dense refractory ceramic pieces
- Joining parts, such as 3D printed pieces, into complex structures
- Sealing ‘gaps’ and fissures
Link to PDF datasheet: Cera Glue BondCoat
Y-FZM 1400 Powder
Y-FZM 1400 is a dry powder mixture of Yttria and FZM (Fused Zirconia-Mullite) which, on adding around 40 wt% water and stirring forms a cementitious slurry that can be poured or cast into silicone molds to form parts. Y-FZM 1400 also can be used to cement/glue refractories together (such as Alumina). Cast parts can be removed from the mold after vibrating to remove air bubbles and then heating at 50-60 C to “set” the binder and allow removal from the silicone mold. Heating a cast part to 1375-1400 C results in nearly 100% dense refractory transormed to highly stable Yttria phases (Yttrium Aluminate, YSZ, Yttrium Silicate). Y-FZM 1400 is ideal for making your own corrosion resistant refractory parts, reportedly stable with molten Aluminum, glasses, and steel. Usable to nearly 1400 C in all atmospheres.
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- Prepared as a slurry from dry mixture by just adding water
- Readily prepared into near full density parts by cast-and-sinter technique
- Useful as a cement/glue or repair putty for other refractories
- Nearly 1400 C use temperature
- Forms Yttria compounds on sintering
- Contains no RCF (Refractory Ceramic Fiber)
- Water-based – easy cleanup
- Casting your own specialty parts of high-stability, high-performance Yttria-based refractory
- Repairing/patching of fissures, cracks, joints
- Cementing refractory ceramic parts
Link to PDF datasheet: Y-FZM 1400
CA-AT 1400 Powder
CA-AT 1400 is a dry refractory powder blend which, on adding around 30 wt% water and stirring, can be poured/cast into silicone molds to form parts or can be used to cement/glue refractories together. After casting and drying, firing the cast part to 1300-1400 C results in over near-full-dense refractory.
- Prepared as a slurry from dry mixture by just adding water
- Readily prepared into near full density parts by cast-and-sinter technique
- Very low drying shrinkage after casting
- Useful as a cement/glue or repair putty for other refractories
- Nearly 1400 C use temperature
- Contains no RCF (Refractory Ceramic Fiber)
- Water-based – easy cleanup
- Casting your own specialty refractory shapes
- Repairing/patching of fissures, cracks, joints
- Cementing refractory parts
Link to PDF datasheet: CA-AT 1400 Powder
SpackleKote Y
SpackleKote Y is a ready-to-use, water-based, Yttria-loaded putty that can be applied to ceramic substrates with a putty knife, trowel, or spatula to fill or repair. After applying and drying or firing onto ceramic parts, the region can be sanded or scraped.
- Forms a strong, yet porous ceramic layer
- Sandable/scrapable spackle layer forms after drying or firing
- Good for thin and thick application without cracking
- Usable to >=1400 C
- Water-based, safe, and easy to use and cleanup
- Resists cracking
- Contains no Refractory Ceramic Fiber
- Patching, sealing, repairing, filling of fissures, holes, and pock marks
- Providing a stable refractory surface based on Yttrium Oxide
Link to the PDF Datasheet: SpackleKote Y
SpackleKote Z
SpackleKote Z is a ready-to-use, water-based, Zirconia-loaded putty that can be applied to ceramic substrates with a putty knife, trowel, or spatula to fill or repair. After applying and drying or firing onto ceramic parts, the region can be sanded or scraped.
- Forms a strong, yet porous ceramic layer
- Sandable/scrapable spackle layer forms after drying or firing
- Good for thin and thick application without cracking
- Usable to >=1400 C
- Water-based, safe, and easy to use and cleanup
- Resists cracking
- Contains no Refractory Ceramic Fiber
- Patching, sealing, repairing, filling of fissures, holes, and pock marks
- Providing a stable refractory surface based on Zirconium Oxide (Calcia-stabilized)
Link to the PDF Datasheet: SpackleKote Z
PlasterMix ZY Casting Powder
PlasterMix ZY is a Yttria-based plaster-forming mixture, which on merely adding water and stirring, becomes like Plaster-of-Paris that can be cast into silicone forms to make “investment” molds or porous shapes or even be applied like stucco to firebrick.
- Uses Yttrium Oxide as the cementitious phase for forming plaster
- Readily forms slurry with working behavior like Plaster-of-Paris
- Slurry can be cast for forming shapes or “investment” molds
- Provides mixing/working time of over 10 minutes before setting begins and up to an hour before completely setting up as plaster
- Heating to 800-1400 C provides a well-bonded, free-standing shape
- Sandable after drying or firing
- Yields crack-free thick dried or fired pieces
- Water-based, safe and easy to use or cleanup
- Contains no Refractory Ceramic Fiber (RCF), no sulfur, no silica
- Forming “investment” molds for casting very reactive molten metals
- Providing a stable porous (typically1,2 50-65% porous, with pore diameter 0.5-2 microns) refractory part based on Yttrium Oxide
- Forming a weakly-bonded, highly-stable refractory stucco/plaster on firebrick and porous substrates
Link to the PDF Datasheet: PlasterMix ZY Casting Powder
PlasterMix YY Casting Powder
PlasterMix YY is an all-Yttria based plaster-forming mixture, which on merely adding water and stirring, becomes like Plaster-of-Paris that can cast into silicone forms to make “investment” molds or porous shapes or even be applied like stucco to firebrick
- Uses Yttrium Oxide as the cementitious phase for forming plaster
- Readily forms slurry with working behavior like Plaster-of-Paris
- Slurry can be cast for forming shapes or “investment” molds
- Provides mixing/working time of over 10 minutes before setting begins and up to an hour before completely setting up as plaster
- Heating to 800-1400 C provides a well-bonded, free-standing shape
- Sandable after drying or firing
- Yields crack-free thick dried or fired pieces
- Water-based, safe and easy to use or cleanup
- Contains no Refractory Ceramic Fiber (RCF), no sulfur, no silica
- Forming “investment” molds for casting very reactive molten metals
- Providing a stable porous (typically1,2 50-65% porous, with pore diameter 0.5-2 microns) refractory part based on Yttrium Oxide
- Forming a weakly-bonded, highly-stable refractory stucco/plaster on firebrick and porous substrates
Link to the PDF Datasheet: PlasterMix YY
RefClay Y
RefClay Y is a ready-to-use, water-based, Yttria (Y₂O₃) refractory claylike material that can be press molded to form shapes and then fired to high density at 1400 C.
- Based on highly-stable refractory, Yttrium Oxide
- Can be press-formed with silicone or plaster press-molds to most any shape
- Firing to 1400 C in air forms tough, dense body
- Water-based, safe, and easy to use and cleanup
- Contains no Refractory Ceramic Fiber
- Forming stable refractory parts based on Yttrium Oxide
- Making electrical and thermal insulating ceramic shapes by merely press forming
Link to the PDF Datasheet: RefClay Y
RefClay Z
RefClay Z is a ready-to-use, water-based, Zirconia (ZrO₂) refractory claylike material that can be press molded to form shapes and then fired to high density at 1400-1600 C.
- Based on very refractory Zirconium Oxide
- Can be press-formed with silicone or plaster press-molds to most any shape
- Can be sanded/shaped further after thorough drying
- Firing to 1400-1600 C in air forms tough, dense body
- Water-based, safe, and easy to use and cleanup
- Resists cracking
- Contains no Refractory Ceramic Fiber
- Contains no Boron
- Forming stable refractory parts based on Zirconium Oxide
- Making highly thermal insulating ceramic shapes by merely press forming
Link to the PDF Datasheet: RefClay Z