technical ceramic solutions

Tag Archives: Ceramics

The Future With Ceramics

The Future With Ceramics

Ceramics of the past were mostly of artistic and domestic value. Ceramics of the present have many industrial applications.

The electronic field looks ahead to microminiaturization of electronic devices. Ceramic engineers will turn nonfunctional packaging parts into functional components of the device. To accomplish this, new ceramic materials will be developed along with new methods to process them.

The communication industry was revolutionized with the development of fiber optics. Along with microminiaturization of components will come the incorporation of opto-electronic integrated circuits.

High temperature superconductors will open the doors to magnetic levitation vehicles, cheap electricity, and improved MRI (magnetic resonance imaging). With micro-applications of superconductors through thin film tapes in sensors and memory storage devices, the use of superconductors will take-off.

The automobile industry, which already incorporates seventy pounds of ceramics into a car, is looking to the field of ceramics to provide improved sensors of motion, gas compositions, electrical and thermal changes; as well as light weight, high strength and high temperature components for the engines. For the conservation of energy and environmental protection, ceramics seem to be a viable possibility in the use of ceramic fuel cells, batteries, photovoltaic cells, and fiber optic transmission of energy.

Besides the ceramic applications in medical diagnostic instruments, the field of bioceramics for bone replacement and chemotherapy release capsules is here. As ceramic materials improve in terms of strength, nonreactivity, compatibility, longevity, porosity for tissue growth, and lower costs, more use of ceramic devices will be seen.

Source From Web

Introductions of Alumina Ceramics Materials

At present innovacera’s alumina ceramics material is including two types: high-purity and ordinary.

High-purity alumina ceramic series is the ceramic material with Al2O3 content over 99.9%. Due to its sintering temperature up to 1650-1990C and transmission wavelength of 1 ~ 6μm, it is usually made into molten glass to replace the platinum crucible: Cause its light transmittance and alkali metal corrosion resistance, it can be used as sodium tube for HID application; in the electronics industry, it can be used as integrated circuit ceramics substrate and high-frequency insulating materials.

According to the difference in Al2O3 content, ordinary type alumina ceramic series is divided into 99 ceramics, 95 ceramics, 90 ceramics, 85 ceramics etc. The ceramics with Al2O3 content of 80% or 75% is also classified as ordinary alumina ceramic series. Innovacera produce alumina all is above 92% Alumina.

Among these, 99 alumina ceramic materials are used for producing high-temperature crucible, refractory furnace tubes and special wear-resistant materials such as ceramic bearings, ceramic seals and valve films and so on.

95 alumina ceramics is mainly used as corrosion-resistant and wear-resistant parts.

85 ceramics are often mixed in some steatites, thus improving electrical performance and mechanical strength.

It can be sealed with molybdenum, niobium, tantalum and other metals and some are used as electro-vacuum devices.

Saint-Gobain Launches Combat® AX15 Hot-Pressed Solid Boron Nitride for Ceramic Manufacturing

Combat Solid Grades(Amherst, NY) — Saint-Gobain Ceramic Materials, the world’s leading manufacturer of hexagonal boron nitride, has added a new product AX15 to its Combat® family of high-purity hot-pressed boron nitride products.

Combat AX products, hot-pressed 99.7+% purity hexagonal boron nitride (hBN), exhibit exceptionally high thermal shock resistance, electrical insulation over 1800°C, and high thermal conductivity. The most popular product in the family, AX05, with its highest density and strength has been the material of choice for years in kiln furniture and furnace construction. The newest addition, AX15, with its uniquely open porosity, permits flow of process gases where outgassing is required, making it particularly suitable for direct contact, high-temperature environments such as crucibles, plates, setters, supports and muffles for aluminum nitride (AlN), silicon nitride (SI3N4) and SiAlON ceramic sintering. Like all other Combat hot-pressed products, AX family of boron nitride products can be easily machined into intricate shapes with tight tolerances using standard machining tools.

“AX15 is a perfect complement to AX05” said Dr. Eugene Pruss, Technical Manager, Boron Nitride Products, Saint-Gobain Ceramic Materials. “Combat AX products do not react with graphite or other ceramics, and their strength is unmatched for temperatures up to 1800°C and beyond in inert and vacuum environments. Together, AX15 and AX05 now offer a complete solution for both non-contact kiln furniture and direct-contact sintering media for high temperature ceramic processes” added Dr. Pruss.

In addition to pure hot-pressed solid boron nitride, Saint-Gobain also offers composites of zirconia and silica as well as grades using boric oxide and calcium borate binders. Combat hot-pressed solid BN is used in a wide variety of applications such as high temperature insulators for PVD coaters and ion implanters, nozzles for powder metal manufacturing, side dams for molten metals, and many more.