Re: HVOF WC/Co12 coating on Cast Iron

Posted by ram chattopadhyay ( on 07:15:19 11/09/05

In Reply to:Re: HVOF WC/Co12 coating on Cast Iron posted by Steve Luterek

: : Need we a bond coat before WC/Co 12 coating on Cast Iron Substrate /lamellar graphite/?

Normally no bond coat required.My ex-colleagues (B.Kushner & A.Rotolico) have done investigations on microstructures and properties ofWC-Co coatings by both plasma (80KW) and HVOF processes. In my book on "Advanced Thermally Assisted Surface Engineering Processes", Kluwer Academic Publishers,2004,I have included their work in p210-212.Both the spray processes can result in glassy deposit which may require subsequent heat treatment to form crystalline structures.Comarotively high temp. heat treatment process may cause reaction of graphite with coating /and or base CI.
ram chattopadhyay

Follow Ups:
Surface Engineering Forum

Surface Engineering Message Board Archive

Surface Engineering Message Board Archive Index

Post A Message!

Gordon England Surface Engineering ForumPlease go to the new Surface Engineering Forum as this old message board is a read only archive. Please copy and paste relevant information or link to the page if you wish to reactivate a thread on the new forum.

Gordon England Independent Thermal Spray Coating Consultant
Telephone: +44 (0)1252 405186


Site Links


Nature of Thermal Spray Coatings

Surface Engineering in a Nutshell

Surface Engineering Forum

Thermal Spray Gun Repair Service

Plasma Consumable Parts

Thermal Spray Powder Supplies


Thermal Spray Coatings on Carbon and Glass Fibre Reinforced Polymers

HVOF Coating of Paper Making Roll

Abradable Coatings


Thermal Spray Processes:

Combustion Wire Thermal Spray Process

Combustion Powder Thermal Spray Process

Arc Wire Thermal Spray Process

Plasma Thermal Spray Process

HVOF Thermal Spray Process

HVAF Thermal Spray Process

Detonation Thermal Spray Process

Plasma Flame Theory

Cold Spray Coating Process

Wear and Use of Thermal Spray Coatings

Corrosion and Use of Thermal Spray Coatings

Glossary of Thermal Spray and Surface Engineering Terms

Image Directory for Thermal Spray Coatings

Plasma Gas Flow Information

Plasma Gas Flow Correction Calculator

Contact Form

Links to other interesting sites related to thermal spray and surface engineering

Reciprocal Links

Periodic Table of the Elements

SI Units

Calculators for Conversion between Units of Measurement

Hardness Testing

Surface Engineering Message Board Archive

Surface Engineering Message Board Archive Index

Photography Gallery2

Photography Gallery3

© Copyright Gordon England