| Glass-ceramic Coatings for Steel and
Nimonic Alloy |
K. K. BISWAS, S. DATTA, S. K. DAs
M. C. GHOSE, A. MAZUMDAR AND N. RoY
Pages : 43-45
DOI : 10.1080/0371750X.1986.10822781 |
| Abstract |
| A number of Ti02 and P20 5 nucleated glass-ceramic coating compositions
in the system RO-R20-Al20 3-Si02 (R = Ca, Mg; R = Na,
K, Li) have been studied for application on various grades of steel
and alloy with a view to protecting them against mechanical wear and
chemical corrosion. Good adhesion of the coating has been obtained
on mild steel, stainless steel and nimonic alloy. The conventional
technique has been used in the preparation and application of the
coating material. The nucleation and crystal growth have been achieved
by suitable heat-treatment schedule of the coated specimen.
The properties of the coatings with respect to resistance towards
abrasion, impact, high temperature, thermal shock and chemical corrosion
have been evaluated and found to be superior to those of the
conventional vitreous enamel coatings. X-ray and electron microscopic
studies have been used to analyse the crystalline phases
formed in the coating during the heat-treatment process. The unique
combination of properties achieved in this new class of coating material
could be highly useful for a number of specialized engineering
and industrial applications for preventing failure of metals under
stringent operational conditions. |
| Full text : Subscribe to Download Full Text |
| [Go Back] |
|
