(Ceramic Powder Produced by Wintrustek)

Ceramic powder is made up of ceramic particles and additives that make it easier to use for making components. A binding agent is used to keep the powder together after compaction, while a release agent makes it possible to remove a compacted component from the compaction die with ease.

Material examples

ALUMINA

Ceramic with the chemical formula Al2O3 is called alumina. The primary properties of these powders are their structure, purity, hardness, and specific surface area.

ALUMINUM NITRIDE

In the semiconductor and electronics industries, these powders' thermal and electrical qualities are particularly valued.

HEXAGONAL BORON NITRIDE

Hexagonal boron nitride has good electrical insulation, thermal conductivity, and chemical stability.

ZYP

ZYP powder is made out of zirconia that has been stabilized with yttrium oxide and is an incredibly fine, highly reactive powder.

Manufacturing Methods

MILLING/GRINDING

Milling, also known as grinding, is a method of producing ceramic powder in which the particle size of a ceramic substance is reduced until it is transformed into powder form.

TAPE CASTING

Another prevalent process for producing ceramic powders is tape casting. It is employed in the production of integrated circuit substrates. Additionally, it is utilized in the construction of multilayer capacitors and integrated circuit package structures. Casting repeatedly takes place on a carrier surface using a ceramic powder, an organic solvent, and a polymer binder. Teflon or another non-stick substance serves as the carrier surface. Then, using the edge of a knife, the ceramic powder combination (slurry) is distributed across the smooth surface to a predetermined thickness. After drying, the layer of ceramic powder mixture is prepared for processing.

COMPACT

Ceramic powder is transformed via this process from its granular state to a more cohesive and dense one. This procedure compacts ceramic powder, as the name suggests. Cold pressing or hot pressing can be used to compact ceramic particles.

INJECTION MOLDING

Injection molding is used to produce ceramic materials with complex geometries. This process can be used to produce ceramic materials in large quantities. Injection molding is a versatile process. It is used for both oxide ceramics and non-oxide ceramics. In addition, it is highly precise. The end product of injection molding is of high quality.

SLIP CASTING

Slip casting is a powder ceramic production method that is commonly employed in pottery. Typically, it's utilized to make shapes that are difficult to make using a wheel. Slip casting is a lengthy procedure that might take up to 24 hours. On the plus side, the finished product is accurate and reliable. In Europe, slip casting dates back to the 1750s, and in China, it dates back even more. The suspension of the ceramic powder enables it to come together as a slip. A porous mold is then filled with the slip. As the mold dries, forming a solid layer from the slips.

GEL CASTING

Gel casting is a ceramic powder manufacturing process that began in Canada in the 1960s. It is employed to create intricate ceramic shapes that are strong and of excellent quality. In this procedure, a monomer, cross-linker, and free radical initiator are combined with the ceramic powder. The combination is then added to a suspension of water. To increase the mixture's stiffness, the binder that is already present is polymerized. The combination then transforms into a gel. The gel mixture is poured into a mold and allowed to solidify there. After solidifying, the substance is removed from the mold and dried. The finished product is a green body that is subsequently sintered.

EXTRUSTION

Extrusion is a process for making ceramic powder that may be used to mold the material into desired shapes. Pulling the ceramic powder through a die with a particular cross-section. The production of ceramics with intricate cross-sections is possible with this technique. Furthermore, it doesn't exert enough force on the materials to crack them. The final products of this procedure are strong and have a commendable surface polish. In 1797, the first extrusion procedure was carried out. A person by the name of Joseph Bramah committed it. Extrusion might be warm, cool, or hot. At a temperature higher than the material's recrystallization temperature, hot extrusion takes place. Warm extrusion takes place above room temperature and below the material's recrystallization temperature, whereas cold extrusion happens at room temperature.