Bodycote Hot Isostatic Pressing :: Tech 18 Nitride + Ceramic

For Textile Industry, Paint Blend Shear Blades, Zinc Diecasting, Spline Rollers, and Any Place That Wear is Caused by Sliding Surfaces Plus Chemical Attack

CHEMICALLY BONDED INTO SUBSTRATE
TECH 18 is a significant advance in surface engineering technology. The surface of a metal part is first modified to harden the outer surface of the metal and form a unique, porous oxide on the surface. Then the porosity is filled with ceramic. During the fill process, chemical reactions occur that cause the ceramic to be chemically bonded to the substrate material. The bonding creates improved surface strength, hardness, corrosion resistance, and surface "friendliness."

HARDNESS
TECH 18 ceramic has a Vickers hardness of 2850. Comparatively, various steels can range from 200 to 800 Vickers (20 to 64 Rockwell C). The microscopic crystals of ceramic, chemically bonded together, form an extremely hard surface which resists wear and particle pull out. A unique feature of the TECH 18 process is the ability to harden the metal underneath the ceramic. This metal hardness measures 1000 Vickers (~70 Rockwell C), and the surface withstands higher loads without deformation compared with untreated metal.

THICKNESS OF ONLY 0.0005 INCHES
TECH 18 can be chemically modified to engineer the surface for unique applications, like non-wetting of molten metals and glasses, low friction to man-made fibers, catalytic to process streams, and numerous other properties. These added qualities are achieved with nominal buildup.

ID AND OD SURFACES
TECH 18 application techniques allow this process to be performed on most surfaces, including inside diameters as small as 0.1 inches by 26 inches long.

EXTRAORDINARY WEAR RESISTANCE
TECH 18's combination of chemical bond strength, high particle hardness, low friction and corrosion resistance results in exceptional wear resistance. For example, when an abrasive fiber is texturized in a TECH 18 processed entanglement jet, life increases of 1000% and more have been realized.

Hardens outer 0.0005" of substrate to 70Rc

Increases measurable coating hardness to 2850 Vickers (>85Rc)

Creates exceptional wear-resistance in low-load conditions

Can be applied to ID and OD surfaces

Reduces friction and galling

TECHNICAL DATA

HARDNESS
2850 Vickers

BOND MECHANISM
Chemical

BOND STRENGTH
Over 10,000 psi

THICKNESS
0.0005 Inches

COEFFICIENT OF FRICTION
<.2 Against fibers