Ceramic Materials

Compared to other materials, ceramics have many advantageous properties. In particular, the high hardness, the high wear resistance, the special density properties and the high temperature resistance of the ceramic distinguish the material from metal. In addition, compared to metal, ceramic is particularly resistant to corrosion and wear.

This opens up a wide range of application areas for which we can produce components according to the wishes of our customers. Due to its special strength, high hardness and wear resistance, the ceramic is suitable for components that are used in the mechanical sector.

Here we can supply machine components for the paper or packaging industry, for example. Ceramic is also an ideal material for thermal applications.

Because ceramic is particularly corrosion-resistant and physiologically harmless, it is also very suitable for applications with chemical and biological substances. That is why we use ceramics to manufacture components for our customers in the chemical industry , the energy and environment sectors , plant engineering for pharmaceutical and food production and the pump industry .

The technical ceramic, as it is produced by OXIDKERAMIK J. Cardenas GmbH, impresses with its special mechanical properties. The most important ones, which are also valued by our customers, result from their special density and hardness.

These are responsible for ensuring that components made of technical ceramics are particularly resistant to high temperatures and extremely pressure-resistant. This is a clear advantage over steels.

The material ceramic is characterized by the fact that its density is only 20% to 70% that of steel. This makes ceramic components particularly light with high compressive strength. Overall, the weight of the components can be reduced in this way.

This is important, for example, in aircraft construction in order to save weight. But our customers also benefit from this special property of the ceramic material when it comes to moving parts in mechanical engineering .

For example, the density of our zirconium oxide ceramic CR105 is 6.0 g / cm3 and the flexural strength is 1000 MPa. At the same time, the thermal conductivity of the ceramic material improves. Our CARSIC310 silicon carbide ceramic is outstanding here. With a density of "only" 3.1g / cm3, the thermal conductivity is 100 W / m K. The ceramic material is therefore particularly suitable for use in manufacturing and processing processes that generate a lot of waste heat.

OK997 can then be used in areas that require electrical insulation. OXIDKERAMIK J. Cardenas GmbH offers the ideal material with the product OK997, a high-purity 99.7% aluminum oxide ceramic.

As far as the chemical properties of technical ceramics are concerned, this is primarily characterized by their high resistance to corrosion. Compared to metals, acids and alkalis can hardly harm any ceramic material. The corrosion resistance of ceramics is partially retained up to high temperatures.

This enables the diverse use of ceramic materials in products for the chemical industry or the energy and environment sectors. Oxidkeramik J. Cardenas GmbH supplies the right material for every application with its technical ceramic materials. All of our company`s ceramic materials are corrosion-resistant.

Depending on the area of application, however, there are differences that must be taken into account. As with the hardness of ceramics, there is a difference between oxide ceramics and non-oxide ceramics in terms of their chemical properties. Our CARSIC 310 non-oxide ceramic, which consists of directly sintered silicon carbide (SSiC), has the highest corrosion resistance.

Compared to our oxide ceramics OK997, CR101 and CR105, this ceramic material has a chemical resistance in a pH value range of 0-14. This means that components made of this material are not only corrosion-resistant to hydrochloric acid or nitric acid, for example, but also to hydrofluoric acid. This is a particularly great advantage of our products, especially for the chemical industry.

One of the special requirements of ceramics as a material is that the respective component must be shaped before sintering. This allows us to respond individually to the wishes of our customers and to design the component that they need.

Because metal and ceramics differ in their material properties, metal components cannot simply be copied in ceramics. Even if very complex designs, even with internal or external threads, are possible in ceramic. Find out more about this in conjunction with ceramics made of our material OK997 .

In the case of metal-ceramic composite solutions, for example made from our silicon carbide CARSIC 310 , we pay attention to a particularly low-gap construction in order to be able to meet the highest hygiene standards. In doing so, we manage to combine the excellent ceramic properties of silicon carbide with the advantages of the assembly-friendly metal, according to the wishes of our customers. See silicon carbide shrunk with metal .

Talk to us about your constructions. We would be happy to advise you when it comes to adapting to ceramics 

Here are the most important properties of OK997 aluminum oxide ceramic at a glance:

• Temperature resistance up to 1,500 ° C
• extreme hardness and dimensional stability
• high compressive strength
• low specific gravity 3.90 g / cm³
• very high corrosion resistance
• very high wear resistance
• dielectric behavior
• electrically insulating
• tested according to FDA guidelines
• spec. Volume resistance 5 x 1014 O cm
• high dielectric strength> 20 [kV / mm]
• good thermal conductivity 28 W / m K
• high surface quality

Here are the most important properties of silicon carbide CARSIC310 at a glance:

• open porosity = 0%
• gas-tight material
• Temperature resistance up to 1,500 ° C
• high hardness
• low specific density: 3.1 g / cm³
• very high corrosion and wear resistance
• Thermal conductivity = 100 W / m K
• chemical resistance from pH 0 to pH 14
• tested according to FDA guidelines
• Circumferential speeds up to v = 50 m / s
• Use in the hygiene and food sector
• high surface quality
• CIP / SIP cleaning possible

Here are the most important properties of zirconium oxide ceramic CR105 at a glance:

• exceptional flexural strength 1000 MPa
• highest fracture toughness KIC 10.0 MPa m1 / 2
• excellent wear resistance
• very high compressive strength 3800 MPa
• low thermal conductivity 2.5 W / m K, ideal when used for thermal insulation
• very high edge stability
• tested according to FDA guidelines
• minimal tendency to weld against metallic materials
• outstanding tribological behavior

Here are the most important properties of zirconia ceramic CR101 at a glance:

• exceptional flexural strength 560 MPa
• highest fracture toughness KIC 8.0 MPa m1 / 2
• excellent wear resistance
• very high compressive strength 2700 MPa
• low thermal conductivity 3.0 W / m K, ideal when used for thermal insulation
• very high edge stability
• tested according to FDA guidelines
• minimal tendency to weld against metallic materials
• outstanding tribological behavior

Reservation for values:

The specified property values only apply to the test specimens on which they were measured. For standard parts and depending on the version, the values may differ. The stated values are to be understood as guide values. They refer to a temperature of 20 ° C, unless otherwise stated. Please contact us if you require further information. Status 3/2016