The Tantaline Process “ The surface alloy is the key” Version: 13.11.08

The Process Overall Details Stainless Substrate Tantalum Core Processes Supporting Operation Quality Testing Inspection Product Sutability Control Alkaline Cleaning + Acidic Pickling Etching for Tolerance Control Mounting of Parts + Reactor Packing Alloy Bonding of Substrate & Tantalum Deposition of Tantalum Excess Layer Post Treatment Polishing & Grinding 100% Quality Testing by Boiling in Hot HCl Exit Control + Certificate

Overall

Details

Process Requirements Materials Geometry and Size 18” (460mm) 28” (710mm) D Length < 10xD

Materials

Geometry and Size

Creating the Tantaline Surface High temperature: 700C – 900C Solid state diffusion (allows surface alloying) Gas phase process / geometry independent The deposited tantalum is 100% dense, ductile and low tension Alloy Zone Tantalum Surface Typical : 0.002” / 50um Max: 0.008”/ 200um

High temperature: 700C – 900C

Solid state diffusion (allows surface alloying)

Gas phase process / geometry independent

The deposited tantalum is 100% dense, ductile and low tension

Tantaline Utilizing Standard Parts Tolerance Etching 0.002” (50um) material is removed Tantaline Processing 0.002” (50um) tantalum is grown (up to 0.008” or 200um) Dimensions of original part maintained (internal & external) Original Part Tantalum Metal Surface Alloy SS SS Etched Part SS

Tolerance Etching

0.002” (50um) material is removed

Tantaline Processing

0.002” (50um) tantalum is grown (up to 0.008” or 200um)

Dimensions of original part maintained (internal & external)

Post Treatment Polishing & Grinding Vibration polishing (standard) Visual apperance Fine grit grinding (extra) Polishing by fine #500 to #1000 paper by hand Bright polishing (extra) By machine and paste. Tolerance grinding (extra) In case where very exact tolerances are needed

Vibration polishing (standard)

Visual apperance

Fine grit grinding (extra)

Polishing by fine #500 to #1000 paper by hand

Bright polishing (extra)

By machine and paste.

Tolerance grinding (extra)

In case where very exact tolerances are needed

Quality Control Testing in HCl 100% of parts are tested 95°C (203°F) hot 32% hydrochloric acid Min 2 day – Up to 30 days Less than 1 / 1000 of parts fails during this test

100% of parts are tested

95°C (203°F) hot 32% hydrochloric acid

Min 2 day – Up to 30 days

Less than 1 / 1000 of parts fails during this test

Thank You Contact Us: Americas Europe ______ Ph: 1-88-TANTALUM Ph: +45 70-200-679 Fax: 1-888-292-9243 Fax: +45 70-200-689 Email: AMERICA@tantaline.com Email: EUROPE@tantaline.com