ceramic glass additives

Acrylic Ceramic Binder (PAA)

CAS: 9003-01-4

Polyacrylic acid (PAA) and its ammonium or sodium salt copolymers are used as binders and dispersants in aqueous ceramic tape casting, screen printing pastes, and multilayer ceramic capacitor (MLCC) slurries. These acrylic binders deliver strong green films with controlled flexibility, and decompose cleanly at low sintering temperatures.

ceramic glass additives

Alumina Fiber Ceramic Composite Reinforcement

CAS: 1344-28-1

Polycrystalline alumina (Al2O3) fibers are high-performance refractory reinforcements for ceramic matrix composites (CMC), thermal insulation modules, and metal matrix composites. Available in short-fiber and continuous-fiber forms, alumina fibers provide excellent tensile strength, creep resistance at temperatures up to 1400 °C, and chemical stability in oxidizing atmospheres.

ceramic glass additives

Ammonium Polyacrylate Ceramic Deflocculant

CAS: 9003-04-7

Ammonium polyacrylate (APA) is the ammonium-neutralized form of polyacrylic acid, used as a premium dispersant for alumina and other technical oxide ceramic slips. It provides excellent steric stabilization without introducing sodium ions, making it ideal for applications requiring high purity and low alkali contamination such as electronic substrates and MLCC green sheets.

ceramic glass additives

Ammonium Polymethacrylate Ceramic Deflocculant (Darvan Type)

Ammonium polymethacrylate (APMA) is a premium polymeric dispersant functionally equivalent to Vanderbilt Darvan C and Darvan 7-N, widely used in studio and industrial ceramics for deflocculating casting slips. APMA provides excellent electrosteric stabilization of clay, alumina, and mixed ceramic systems at very low dosages (0.1–0.3% on solids), producing fluid slips with high solids content and excellent casting behavior.

ceramic glass additives

Barium Carbonate for BaTiO3 Ceramics

CAS: 513-77-9

High-purity barium carbonate (BaCO3) is the primary barium source for synthesis of barium titanate (BaTiO3) and other barium-containing electronic ceramics, perovskite oxides, and specialty glasses. Stoichiometric control of the Ba/Ti ratio in BaTiO3 is critical for dielectric properties in multilayer ceramic capacitors (MLCC). BaCO3 decomposes at ~1000 °C to reactive BaO during sintering.

ceramic glass additives

Bismuth Oxide Ceramic Flux and Dopant

CAS: 1304-76-3

Bismuth oxide (Bi2O3) is a versatile low-melting flux and functional dopant in ceramic and glass applications. In ZnO varistors, 0.5–1 mol% Bi2O3 creates intergranular amorphous layers responsible for non-linear varistor characteristics. In LTCC (low-temperature co-fired ceramics), bismuth-containing frits enable densification below 900 °C, compatible with silver and gold electrode metallization.

ceramic glass additives

Borosilicate Glass Frit for Ceramics

CAS: 65997-17-3

Borosilicate glass frit is a pre-fused glass powder used in ceramic glazes, enamel coatings, and electronic packaging glass seals. The B2O3 component lowers the glass transition temperature and thermal expansion coefficient compared to soda-lime silicate, providing chemical durability and thermal shock resistance. Used across tile, tableware, and technical ceramic glaze applications requiring reliable mid-fire to high-fire properties.

ceramic glass additives

Calcined Kaolin (Metakaolin) Ceramic Filler

CAS: 1332-58-7

Calcined kaolin (metakaolin, Al2Si2O7) is produced by thermal treatment of kaolin clay above 550 °C to remove structural hydroxyl groups. The resulting dehydroxylated product has high reactivity, enhanced brightness, and improved electrical properties compared to raw kaolin. Widely used as a functional filler in porcelain, technical ceramics, and glass-ceramics.

ceramic glass additives

Calcium Oxide Ceramic Sintering Aid

CAS: 1305-78-8

Calcium oxide (CaO) is a reactive sintering aid used in BaTiO3-based dielectric ceramics, calcia-stabilized zirconia, and Si3N4 ceramics. In BaTiO3, CaO modifies grain growth kinetics and lowers sintering temperature. In zirconia, CaO (3–8 mol%) stabilizes the cubic phase for oxygen ion conductors. CaO must be handled carefully due to its strong hygroscopicity and exothermic reaction with water.

ceramic glass additives

Carboxymethylcellulose Ceramic Binder

CAS: 9004-32-4

Sodium carboxymethylcellulose (CMC) is an anionic cellulose derivative used as a binder, thickener, and dispersant in ceramic slips, glazes, and pressing powders. It improves green strength and workability while acting as a co-deflocculant in aqueous ceramic suspensions. CMC burns out cleanly, making it suitable for technical and traditional ceramics.

ceramic glass additives

Ceramic Mold Release Agent

Ceramic mold release agents are formulated to prevent adhesion between ceramic green bodies and tooling during pressing, extrusion, and injection molding. Offerings include petroleum jelly-based pastes, boron nitride aerosol sprays, stearic acid solutions, and silicone-free formulations for applications where silicone contamination must be avoided. Proper release agent selection minimizes surface defects and extends mold service life.

ceramic glass additives

Ceria Dopant for Zirconia SOFC Electrolyte

CAS: 1306-38-3

Cerium dioxide (CeO2) is used as a dopant in gadolinia-doped ceria (GDC) and samaria-doped ceria (SDC) electrolytes for intermediate-temperature solid oxide fuel cells (IT-SOFC). CeO2 also serves as a phase stabilizer in zirconia, a catalytic promoter in automotive catalysts, and a polishing compound for glass and optical components.

ceramic glass additives

Chromium Oxide Green Ceramic Pigment

CAS: 1308-38-9

Chromium sesquioxide (Cr2O3) is a highly stable green ceramic colorant and refractory material, producing consistent grass-green to deep bottle-green colors across oxidizing and reducing atmospheres. Cr2O3 is also used as the base pigment in chrome-tin pink and chrome-alumina pink ceramic stains, and as a high-purity refractory oxide in specialty ceramics for glass-melting applications.

ceramic glass additives

Citric Acid Ceramic Dispersant

CAS: 77-92-9

Citric acid is a low-molecular-weight organic dispersant and pH modifier used in ceramic slips, glazes, and colloidal suspensions. It chelates multi-valent cations (Ca2+, Mg2+, Al3+) at particle surfaces, reducing agglomeration and viscosity. Particularly effective for stabilizing alumina and zirconia slips at acidic pH, and as a burnout-free dispersant in electronic ceramics.

ceramic glass additives

Cobalt Oxide Blue Ceramic Colorant

CAS: 1307-96-6

Cobalt oxide (CoO) is the most powerful and stable blue colorant for ceramic glazes and bodies, stable across both oxidizing and reducing atmospheres at all normal firing temperatures. At 0.2–0.5%, CoO produces intense cobalt blue in clear glazes; at higher concentrations it yields navy and black tones. Widely used in underglaze decoration, blue-and-white porcelain, and cobalt-blue frit production.

ceramic glass additives

Copper Oxide Ceramic Pigment and Dopant

CAS: 1317-38-0

Cupric oxide (CuO) is a ceramic colorant and functional dopant that produces green to black colors depending on glaze chemistry and firing atmosphere. In reduction firing, Cu2+ is partially reduced to Cu+, yielding copper-red glazes. CuO is also used as a sintering aid in mullite and alumina ceramics, as a p-type semiconductor in sensor applications, and as a catalyst in certain ceramic compositions.

ceramic glass additives

Ethylene Vinyl Acetate Ceramic Binder

CAS: 24937-78-8

Ethylene-vinyl acetate copolymer (EVA) serves as a backbone binder and toughening agent in wax-based ceramic injection molding and low-pressure injection molding systems. EVA provides flexibility and cohesion to wax binder blends, improves flow at elevated temperatures, and burns out cleanly in two-stage debinding processes.

ceramic glass additives

Hexagonal Boron Nitride Thermal Ceramic Additive

CAS: 10043-11-5

Hexagonal boron nitride (hBN) is a layered ceramic material with unique properties combining high thermal conductivity (300–600 W/m·K in-plane), electrical insulation, chemical inertness, and excellent lubrication. Used as a thermal management filler in ceramic composites, a sintering additive in Si3N4 ceramics, and a release coating for high-temperature ceramic molds.

ceramic glass additives

Humic Acid Ceramic Deflocculant (Dolapix Analog)

CAS: 1415-93-6

Humic acid-based deflocculants are natural polyelectrolyte dispersants functionally analogous to commercial products such as Dolapix CE64. They adsorb strongly onto alumina and oxide surfaces, providing electrosteric stabilization and enabling ultra-low viscosity slips at high solids content. Suitable for colloidal processing, gel casting, and direct coagulation casting of advanced ceramics.

ceramic glass additives

Iron Oxide Red Ceramic Pigment

CAS: 1309-37-1

Ferric oxide (Fe2O3, hematite) is the most commonly used red-to-brown ceramic colorant, producing warm earth tones across a wide range of ceramic systems and firing temperatures. At low concentrations (1–3%), Fe2O3 creates tan and amber glazes; at 5–10%, rich iron-red and reddish-brown tones result. In reduction firing, Fe2O3 is partially reduced to FeO, producing celadon and tenmoku glaze effects.

ceramic glass additives

Lead-Free Glaze Frit Base

Lead-free borosilicate and alkali-borosilicate frits are the backbone of modern ceramic glaze systems, replacing traditional lead-containing frits to comply with EU REACH, RoHS, and California Prop 65 regulations. These fused, quenched glass materials provide controlled melting ranges (900–1200 °C), excellent gloss, and chemical resistance when applied as opaque or transparent ceramic coatings.

ceramic glass additives

Lignosulfonate Ceramic Binder

CAS: 8062-15-5

Sodium and calcium lignosulfonates are by-product binders from the pulp and paper industry, widely used in refractory and structural ceramic applications. They provide strong inter-particle bonding in pressing and ramming mixes, act as temporary binders for magnesia and alumina refractories, and are economical alternatives to synthetic binders in high-volume production.

ceramic glass additives

Low-Temperature Ceramic Frit (1050 °C)

Low-temperature ceramic frits are pre-fused glass materials formulated to mature and provide full gloss at firing temperatures of 950–1100 °C, ideal for majolica, earthenware, and LTCC (low-temperature co-fired ceramic) applications. High alkali and/or zinc content lowers the melting temperature while bismuth-containing variants are compatible with silver and gold metallization in electronic ceramics.

ceramic glass additives

Magnesium Oxide Sintering Aid for Alumina

CAS: 1309-48-4

High-purity magnesium oxide (MgO) is the most widely used sintering aid for translucent and high-density alumina ceramics. Trace additions of 250–500 ppm MgO suppress abnormal grain growth during sintering by segregating at Al2O3 grain boundaries, enabling near-theoretical density at lower temperatures. It is essential for transparent alumina (Lucalox) and 99.9% purity alumina substrates.