Mac Medical Overview Presentation

Morgan Advanced Ceramics capabilities for the medical

market

ContentsMAC locationsCeramicsGlass materialsCeramic assembliesBraze alloys/Precious metalsMetal injection moldingCoatings/Surface treatmentsAvailable processes

Morgan Advanced Ceramicsa division of Morgan Crucible plc

16 manufacturing sites on 3 continents

Philosophy

MAC combines the resources of our materials, processing, and application engineering to offer effective solutions to solve our customers needs.

CeramicsAlumina’s – 96%, 99.5%, 99.9%, Vitox biocompatible aluminaAluminum Nitride – 98.5%Zirconia Zirconia toughened aluminaSilicon NitrideCVD Silicon CarbideCVD PBNCVD DiamondMacor

Glass materials (Preforms and Alumino Silicates)

Glass Preforms allow hermetic seals between ceramic and metal parts.

Glass Preforms – wide range of thermal expansion coefficients available

Hybralox Glass – Alumina loaded glass for stronger sealing

Alumino Silicates are high glass content materials used for low thermal expansion, high thermal shock resistance.

Steatite Lava Cerasil

Ceramic assembliesCeramic to metal assemblies

Medical grade feedthrus

High power feedthrus

Coatings available

Diffusion bonding – ceramic to ceramic

Cofiring – Platinum into alumina

Frit bonding – High glass content intermediary layer.

Brazing – Various alloys and ABA’s

Glue - Various epoxy’s

Mechanical - Threading or bolting

Ceramic assemblies - Bonding

Sectioned braze joint

Cross section of diffusion bonded ceramics

Braze alloys

High purity, low vapor pressure brazing alloys. Precious and non-precious.

Active braze alloys – Do not need an intermediary layer as it directly wets to ceramic.

Braze alloys are typically used to join ceramic to metal assemblies, form electrical paths, and create heaters.

Metal injection moldingStainless steel: (i.e. 17-4 PH SST, 316L SST, 304L SST, F-15)

Tungsten

Copper

Almost any metal that starts out as a powder can be injection molded

Parylene coating available

Coatings (for ceramics)Metallizing (moly+nickel, sputter, ABA) – thick or thin film process. Developed for hermetic braze seals, it can also be used to conduct electrical current.

Anti wetting surface treatment – durable as the base material.

Frit or Preforms – high glass content

DLC - diamond like coatings (amorphous carbon) – Contact angles to 110 degrees. Solid lubricant, protective hard coating.

Charge dissipative ceramic – fired into the ceramic surface

Parylene (Insul-Cote P) – vacuum deposited conformal pin-hole free coating. Biocompatible, electrically insulative and low coefficient of friction. Works on many materials.

Coatings (for MIM parts)Parylene – bulk parts or wire can receive this. Replaces epoxy in many applications. Non porous, conformal, autoclave, biocompatible, and low in friction.

DLC – (diamond like coating) Ion beam or RF plasma process. Transparent, hard, elastic, low friction, chemically inert, electrically insulative.

Materials Processing (examples)

Ceramics

•Drypressing

•Isopressing

•CIM

•Slip cast

•Extrusion

•CVD

•Grinding

Alloys

•Draw

•Stamp

•Roll

•Melt-spun

Coatings

•CVD

•Spray

•AW surface treat

Metallizing

•Thick film

•Thin film

Brazing

•Vacuum

•Atmosphere

Alumina ceramic formingIsopressing – High purities. Suitable for volumes of 1 to thousands. Quick turn.

Drypressing – High purities. Suitable for higher volumes in the thousands. Tooling required.

Injection molding – High purities. High volumes. Very complex shapes. Tooling required.

Slip casting – Low purities. Suitable for volumes in 100’s. Tooling required. Inexpensive big parts.

Extrusion – High purities. Low cost. Tube shapes only. Multiple bores possible. Only length can be tight tolerance.

Tape casting – High purities. Low cost. Any volume.