K1145, formally known as TTZ, is a toughened modified Zirconia material that has excellent thermal, conductive, and physical properties for use as a spacer between magnets in assemblies, magnet systems, and magnet arrays. It is especially popular with rare-earth (Neodymium Iron Boron and Samarium Cobalt) magnet assemblies where potential impact is an issue. Because the material has a high density, and has been toughened, it is very resistant to abrasion, is considered inert, and is fracture resistant. Surfaces can be polished as desired to achieve a low coefficient of friction numbers, and if secondary and tertiary processes are utilized, mirror finishes are possible.
K1145 meets NASA's out-gassing requirements for space programs because CML and CVCM values are both zero. K1145 is excellent in ultra-high vacuum applications, medical applications, and applications requiring extremely tight mechanical tolerances over a range of temperatures.