Ceramic & Glass Intro to Ceramics A Review of the For more than 70 years, Goodfellow, the Leading and Innovative leading global supplier of Metals, Alloys, Ceramics, Glasses, Polymers, Compounds and Composites, has been ahead of the Ceramic and Glass Materials market in product innovation. Ceramics exhibit very strong ionic and/or covalent bonds which are stronger than the bonds found in metals. These confer the properties commonly associated with ceramics, Ceramics represent a range of diverse namely hardness, high compressive strength, low thermal and electrical conductivities, materials which includes traditional and chemical inertness. products such as those used in pottery In general, the microstructure of ceramics can be entirely crystalline or a combination of or as a refractory material, as well as crystalline and glassy. When the microstructure is entirely glassy, non-crystalline and advanced engineering materials such as Alumina and Silicon Nitride which are amorphous, the material is defined as glass. used in electronic devices, aerospace components and cutting tools.

Many components are either made or contain ceramic and glass materials. Goodfellow recently provided advanced ceramics for a permanent exhibition at Examples include: The National Museum of Scotland in Edinburgh. The properties of ceramics have many applications across industry, science and technology, and ceramics have been a key component in global trade for thousands of years. The materials provided by Goodfellow have helped to showcase the decorative and practical uses of ceramics, highlighting current uses of high-performance ceramics. Fibre optics which have Heat-resistant tiles on the The touch screens of More information about our ceramics case studies can be found on uses in many areas including outer surface of the Space electronic components Goodfellow.com communication networks, Shuttle (Silica coated with (Indium Tin Oxide (ITO), sensors and imaging devices. Reaction Cured Glass (RCG) Aluminosilicate glass, (Sapphire, Silica) which contains Tetrasilicide Piezoelectric ceramics like and Borosilicate glass) Titanates or Zirconates) Fun Facts

By the late 1990s, enough fibre Some ceramics are so strong optic cable had been installed to that a 1-inch diameter cable Hybrid materials containing Batteries and fuel cells go to and return from the moon could lift Alumina or Zirconia are (Alumina, Stabilised Zirconia, 160 times 50 cars used for dentistry and Perovskites) arthroplasty

Source: Richerson, David W. The Magic of Ceramics. Second ed. The American Ceramic Society, 2012 Our collection of ceramics in more than 30 forms is available off the shelf, with most subject http://ceramics.org/wp-content/uploads/2018/07/Fun-Facts-about-Ceramics.pdf to free delivery within 48 hours and with no minimum order quantities. Machinable Ceramic Materials

Shapal® Hi-M Soft MACOR®

Shapal® Hi-M Soft is a composite ceramic material of AlN and BN. It has a crystal MACOR® Machinable Glass Ceramic is a versatile structure which makes it hard, yet it can be machined using carbide-tipped tools. engineering material that is machinable using conventional With a thermal conductivity of approximately 5x that of Alumina, along with excellent metalworking or carbide tools. With a maximum use mechanical properties, Shapal® Hi-M Soft is an excellent material for engineering temperature of 1000oC and excellent electrical properties, applications, as close-tolerance components can be easily fabricated. Goodfellow MACOR® is an ideal material for prototypes and small-to- ® supplies rods and sheets of Shapal Hi-M Soft from stock and can also supply machined medium volume production requirements. components. Goodfellow supplies rods, bars and sheets from stock. We are also able to supply components produced to specific Applications customer requirements. THz optical and spacecraft design components Excellent Machinability Manufacturing Applications of MACOR® Semiconductor parts Machinable Glass Ceramic Electronic parts where electrical Precision coil formers (electronic/semiconductor insulation and heat dissipation are required industry) Heat sinks Crucibles for vacuum deposition High Thermal Spacers, cavities and reflectors (laser industry) Vacuum components Conductivity Thermal breaks, coil supports and vacuum feed- Click here throughs (aerospace industry) for the Fixtures and reference blocks in power generation Technical Click here for the (nuclear industry) Data Sheet Technical Data Sheet Mechanical Strength MACOR® is a registered trademark of Corning Incorporated Boron Nitride Nanotubes 70% Purity and 90% Purity Optical Glasses

Boron Nitride Nanotubes are a next- generation nanomaterial which will lead the Goodfellow supplies a variety of windows and optical components. 4th Industrial Revolution. Applications Electrically insulating thermal Boron Nitride Nanotubes (BNNTs) represent materials Sizes Components another form of Boron Nitride. Depending on the material, standard sizes Beamsplitters, FS mirrors, prisms, light Piezoelectric sensors start from 0.025mm thick and lengths of guides, viewports, precision spheres, Structurally they are nano-cylinders with 2mm. aspheric lenses, crucibles and domes. sub-micrometre diameters and micrometre High-temperature catalyst lengths. They are composed of hexagonal Fire retardant cables Boron Nitride, constructed by combining Materials Coatings Boron and Nitrogen. Aerospace & nuclear engineering BK7 Glass, B270, Corning Eagle 2000 XG, Anti-Reflection (AR) coatings, optical Polymer nanocomposites Quartz, Fused Silica, Sapphire, Zerodur, coatings, metallic coatings and The key features of BNNTs are light weight, Potassium Aluminosilicate and Filter electrically conductive coatings. mechanical strength, thermal and chemical Ceramic composites Glasses. stability, high electrical resistivity and Biomedical neutron absorption capacity. Infrared Materials Germanium, IR Grade Quartz, Calcium Fluoride, Sapphire. Click here for the Click here for the Technical Data Sheet Technical Information Quartz Perovskites Melting Trays

Introducing our new range of Ceramic Perovskites Opaque Fused Quartz is a popular choice of melting tray material due to Researchers are currently focusing on the cells, sensors and electric batteries, or its excellent thermal and chemical stabilities and superior thermal shock development of Perovskites, materials even next-generation display screens, resistance. It is ideal for situations where rapid temperature changes which are demonstrating great potential for LEDs, memory devices (RAM) and high- may occur during processing. optoelectronic applications. temperature superconductors. Some material manufacturing processes can lead to inconsistencies in the melting vessels that risk a much-reduced lifetime or even failure Perovskites are a group of materials having Goodfellow has a range of Perovskites during the melting process. To overcome these shortcomings, Goodfellow a unique versatile crystal structure. This including BaTiO3, CaTiO3, PbTiO3, in different supplies high-purity (>99.995%) moulded Opaque Fused Quartz melting crystal structure consists of a variation forms such as powders or sputtering trays which provide excellent characteristics for demanding melting targets. in the chemical formula ABX3, with many applications. Perovskites occurring as oxides (ABO3), where A and B are typically metal cations. Due to their lattice, these materials are characterised by special properties like Materials we stock in powder superconductivity, magnetoresistance, and solid forms: Applications piezoelectricity and dielectric and Barium Titanate High-temperature processing vessels pyroelectric behaviours. Bismuth Aluminate Calcining and melting vessels Therefore, these materials are being Bismuth Titanium Oxide considered as excellent candidates for Calcium Titanate Solder pots multilayer capacitors like fuel cells, solar Copper Tungsten Oxide Lithium Titanate Lead Titanium Oxide Click here for the Lanthanum Titanate Click here for the Samarium Ferrite Technical Information Technical Data Sheet FORMS Foam Metallised Film Rod Bar A low density, permeable structure of cells and continuous ligaments Film which is coated with a metal. The thickness of the metal is A straight length of circular section material. offering a high surface area to volume ratio, and also a high strength measured and described in terms of the material’s specific electrical A straight length of rectangular, square or oval section material. to weight ratio. resistance in ohms per square. Sheet Bead Foil Microfoil Flat material with a thickness >0.5mm. A small piece of material with a hole through it. Beads can be Thin sheets of pure metal and metal alloys. Due to their fragile nature, spherical, tubular or “fish-spine” interlocking forms. some foils are coated on one side with an acrylic or polyester support. An extremely thin sheet of metal or alloy mounted on a permanent Where foils are supported they are indicated in the detailed support. This support cannot be removed without destroying the item description. Microfoil. Single Crystal Bolt Granule Microleaf A material grown as a monocrystal, generally to a specific A threaded pin that can be screwed into a nut or a tapped hole to orientation, dimension and surface finish. It may contain a dopant. fasten items together. Bolts are available with different head styles Single crystals are usually made to order. Pellets of an approximately regular shape. Granules may vary in size An extremely thin sheet of metal mounted on a removable support. and also in metric and inch-threaded sizes. and, therefore, the dimensions stated are nominal. In addition, the Microleaf is not available for metals which are too brittle to be free shape of a granule may vary from item to item. standing. Sphere Chopped Fibre A regular solid or hollow three-dimensional form in which every Honeycomb Monofilament cross-section is a circle. Spheres are available with standard or Fibres cut into short lengths called cut, staple or chopped fiber. precision tolerances, and can be supplied with different surface A single strand of a non-metallic material. A cellular structure similar in appearance to natural honeycomb. finishes depending on the material. Crucible Ink Non-Woven Fabric Sputtering Target A vessel in which other materials may be heated or melted, usually at high temperatures. A liquid or paste used for writing, printing or drawing. In many instances Non-woven fabrics are made by methods other than weaving or knitting, A high purity material used as a source for sputtering, a cold it is a colloidal sol system of fine pigment particles dispersed in a the yarns and fibres being held together, often quite loosely, by means vaporization process in which atoms are physically removed from solvent. The ink will impart colour and its properties by being adsorbed/ other than geometric interlacing. Due to the open and porous the target surface by ion bombardment. absorbed onto the substrate, often via ionic bonding. Fabric nature of this material, all other dimensions are nominal.

Woven fabrics are made by the regular interlacing of two arrays of yarns at right angles to each other, these being referred to as the Insulated Wire Tube warp and weft (see also Non-woven fabric). Nut A hollow length of material normally circular in section. Most tubes are A single or multiple flexible strand of metal or alloy with an insulating Generally a flat piece of material with a threaded hole which can be straight except those made of flexible polymer. sheath. screwed onto a bolt to fasten items together. Nuts typically have a Fibre hexagonal external shape. Nuts are available in metric and inch threaded sizes.

Yarns or tows consisting of several approximately parallel individual filaments, each filament usually being smaller in diameter than a Laminate Washer monofilament. Yarns contain a defined number of filaments, typically three to several hundred; tows contain thousands of filaments whose number Layers of material which have been bonded together by the use of heat, Powder is only defined approximately. Both are primarily specified by their linear pressure and, possibly, adhesive. A thin, flat piece of material with a hole in the middle, used in density measured in “tex”, the weight in grams of a 1km length of material. conjunction with bolts and nuts to distribute the load of a threaded Small particles with an approximately defined size range. Those fastener. materials described as alloy precursors are not true alloys - they are made by sintering a blend of powders of the component metals to Lump achieve alloying by diffusion. The resultant cake is ground and sieved to Film the required particle size range. Unless otherwise stated, the particle sizes shown are for guidance only. We do not guarantee either any Wire A solid piece of material with no defined shape. particular size distribution between the quoted minimum and maximum A non-metallic sheet material with a thickness < 0.5mm. sizes, or a specific particle shape. A single or multiple flexible strand of pure metal or alloy. Mesh Flake Mesh is available as either a woven wire or electroformed product; in all Flat, irregularly shaped pieces of material. A maximum flake size is cases, the quoted aperture sizes are nominal. Wire mesh: a material which indicated but individual flakes may vary greatly in size. is woven from metal wires to provide a thin grid with a regular series of holes. Electroformed mesh: a product made by electroplating the mesh geometry through a mask onto a substrate which is subsequently etched away. HEAD OFFICE Goodfellow Cambridge Limited Ermine Business Park Huntingdon, PE29 6WR England

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