1. Hitech Engineering Materials and Systems Ltd
Mixed Metal Oxide Activated Titanium Anode For Impressed Current Cathodic Protection
Hitech Engineering Materials and Systems Ltd

2. MMO Titanium Anodes

3. Hitech EMS Ltd has available
Ru-Ti-Ir, Ru-Ti-Sn and Ir-Ta Activated Titanium Anodes for Impressed Current Cathodic Protection.
Shapes available include wire, ribbon, plate, solid rod, tube, mesh and canistered.
Successfully produced since 1992 the production plant has customers throughout China, the USA, Europe, the Middle East and Asia

4. Recent Client List 2001 Tube Spain S.E.T.A..ARGOS.A 2002
Ribbon, Tube, Sheet
UK Cathelco Ltd Germany SCA
Spain S.E.T.A..ARGOS.
2003
Tube, Mesh, Sheet, Canister
UK Cathelco Ltd Corrpro USA
Korea Wilson Walton Korea Ltd
Italy A.G.E
2004
Ribbon, Tube, Mesh, Sheet, Rod,
UK Cathelco Ltd Corrpro USA
2005
Wire, Ribbon, Tube, Mesh, Sheet, Rod, Canister
UK Cathelco Ltd UK B.A.C
America Corrpro Italy A.G.E
Kuwait HOV
Recent Client List

5. Mixed metal oxides are formed on the titanium substrate through a process of thermal decomposition creating an oxide coating of the platinum group of metals.
These oxide coatings have many superior electrochemical properties such as near metal conductivity and extremely low consumption rates.
Coating Summary

6. The titanium substrate usually specified is either commercially pure titanium Grade TA1 or TA2
An equivalency chart comparing the Chinese National Standard (GB ) with the ASTM standard follows:
Material

7. Equivalency Chart Element Ti, max N, C, H, Fe, O, Residual, each total
ASTM
Gr1
balance
0.03
0.08
0.015
0.20
0.18
0.1
0.4
Gr2
0.30
0.25 GB
(China)
TA1
0.10
TA2
0.05
Equivalency Chart

8. Coating Types Type Coating Element Application 1 IrO2-RuO2- TiO2-X
Suitable for use in sea
water where Cl2 is the principal anode product. 2
IrO2-TaO5-X
Suitable for use in soil,
backfill, fresh water and
sea water where O2, Cl2 or
a combination of both are
discharged at the anode.
Coating Types

9. Anode Forms Wire Ribbon Rod Tube Mesh Sheet Canister
Due to the ductility of the titanium substrate, a wide range of anode shapes suitable to the structure to be protected are possible.
Anode Forms

10. Quality assurance and control procedures are applied strictly at all stages of production.
Raw material specification
Surface preparation
Coating application
Coating distribution and coating adhesion
Anode/cable contact resistance
Each assembled anode is Helium leak tested
Quality Assurance

11. Advantages of MMO Titanium Anodes
Lightweight
MMO coatings demonstrate very high chemical stability even in environments with very low pH values. The coating is not affected by the generation of chlorine.
Wear rate of the anode is extremely low and uniform and between 1 and 6 milligrams/ampere-year.
Anode dimensions remain nearly constant during the design life of the anode.
Operated at high current density e.g. 2000A/m2.
A superior electrically-conductive performance: 10-7Ω·m
Advantages of MMO Titanium Anodes

12. Mixed Metal Oxide(MMO)
Coated species

13. Wire Anode Titanium Substrate
Pure titanium wire meets ASTM standard B348 grade 1 or grade 2.
Copper cored titanium wire according to customer’s requests.

14. Wire Anode Parameters 1.5 +0.15 -0.00 0.2 1.1 0.0047 12.2 3.0 +0.28
Diameter
(mm)
Tolerance
Titanium
Copper
Surface
Area
(m2)
Weight
( g/m )
Thickness
1.5
+0.15
-0.00
0.2
1.1
0.0047
12.2
3.0
+0.28
2.6
0.0094
66.4
Wire Anode Parameters

15. The coating used on wire is suitable for most cathodic protection applications, but output varies with application.
Wire Anode Coating

16. Wire Anode Application
Canistered anodes
Continuous horizontal ground bed
Discontinuous vertical ground bed
Above ground storage tanks
Underground storage tanks
Electrical cable shielding
Water storage tanks
Water treatment equipment
Wire Anode Application

17. The wire diameter remains nearly constant during the life of the anode
Inherently stable and resilient, the titanium wire anode is easy to install
The high current density capacity has the added advantage of allowing high current overloads for initial polarization without causing harm to the anode
Wire Anode Features

18. Ribbon Anode Titanium Substrate:
The titanium ribbon meets ASTM standard B265 grade 1 or grade 2
Anode Coating:
The coating used on ribbon is IrO2-Ta2O5-X
Ribbon Anode

19. Ribbon Anode Parameters
Width mm
Thickness
Length
Weight
g/m
Surface Area m2
6.35
0.635
152
18.15
0.014
12.7
36.29
0.120
Ribbon Anode Parameters

20. Ribbon Anode Applications Fine sand environments
Working environment evolution of O2 , Cl2 or a combination of both
Usually used for above ground storage tanks bottoms and reinforced concrete structures
Ribbon Anode
Applications

21. Features Ribbon Anode Can be supplied in grid or ladder form
Easy to cut and suit for all sizes of storage tank bottoms
Uniform current distribution
Simple installation
Superior performance and a strong bond to the concrete when used in reinforced concrete application
The design lifetime can be adjusted by varying the ribbon anode spacing
Ribbon Anode
Features

22. Solid Rod Anode Titanium Substrate:
The solid titanium rod meets ASTM standard B348 grade 1 or grade 2
Anode Coating:
The coating type can be defined according to the specific environment in which the anode operates but output varies with application

23. Rod Anode Parameters Diameter (mm) Length Weight (kg) Surface Area
3.2
1000
0.036
0.01
6.4
0.145
0.02
12.7
0.570
0.04 19
1.275
0.06
Rod Anode Parameters

24. Applications Features
Water condenser boxes
Heat-exchangers
Ground bed applications
High current output
Constant electrical resistance
The added advantage of allowing high current overloads for initial polarization without causing harm to the anode
Also available as rod anode assemblies
Rod Anode
Applications Features

25. Expanded Mesh Anode Titanium Substrate :
Expanded titanium mesh meets ASTM standard B265 grade 1 or grade 2
Anode Coating:
Selection of the specific anode coating is based on the operating environment
Expanded Mesh Anode

26. Expanded Mesh Anode Parameters
Width
(mm)
Length
Thickness
Mesh size
Weight
(g)
Surface
Area
(m2)
32.5
1220 1
12.5×4.5
178
0.0818 20
1000 90
0.0420
Expanded Mesh Anode Parameters

27. Expanded Mesh Anode Applications
Canistered mesh anodes have been designed to replace the massive silicon iron anodes in horizontal and shallow vertical ground beds
Reinforcing steel in concrete
Bridge piers and surfaces
Parking garages
Causeways for preventing or controlling floods
Docks
Expanded Mesh Anode Applications

28. Expanded Mesh Anode Features
Lightweight and unbreakable
Canistered mesh anodes can be supplied as singles or in strings
Lower cost than silicon iron
Lower shipping cost due to lower weight
Expanded Mesh Anode Features

29. Tubular Anode Titanium Substrate: Titanium tube meets ASTM
standard B338 grade 1 or grade 2.
Anode Coating :
Selection of the anode coating is based on operating environment.
Tubular Anode

30. Tubular Anode Parameters
Outer
Diameter
(mm)
Length
Thickness
Weight
(kg)
Surface
Area
(m2) 19
1200
1.0
0.305
0.072 25
500
1.5
0.249
0.039
1000
0.498
0.079
0.598
0.094
1500
0747
0.118 31
2.0
1.020
0.121
Tubular Anode Parameters

31. Tubular Anode Applications
Tubular anodes can be supplied as singles or in strings.
Suitable for all natural environments e.g. soil, fresh water, sea water, mud.
The current output depends on the anode dimensions, substrate, applications and design lifetime.
Tubular Anode Applications

32. Tubular Anode Features
High current output and low anode/earth electrical resistance.
Tubular anodes offer savings of 15-35% over competitive anodes on an installed cost basis.
Anode-cable assemblies are easy to handle, transport and install because of their unique flexibility.
Tubular Anode Features

33. Mixed Metal Oxide Activated Canistered Anode
Canistered anodes made in wire, tube or mesh are the perfect impressed current anode for shallow vertical and horizontal surface ground beds as well as wet , marshy soil conditions where caving is likely to occur. Ideal for protecting structures such as underground storage tanks, above ground storage tanks, pipelines.
Mixed Metal Oxide Activated Canistered Anode

34. Canistered Anode

35. Canistered Mesh Anode

36. Canistered Tubular Anode

37. Advantages of Canister anodes
Lightweight and unbreakable
Can be supplied as singles or in strings
Anode cable connection completely resin encapsulated
All anode/cable connections helium leak tested to ensure a perfect seal
Anode/cable connections factory sealed with resin
Anode/cable resistance less than ohms
20 years life with standard coating loading
Tubular anode centre or end connector giving a resistance of less than ohms
Advantages of Canister anodes

38. MMO Anode Images

39. Half Tube Anode

40. Ribbon Anode

41. Disc Anode

42. Tube anode assembly

43. Mesh Anode

44. Flute Anode

45. Wire Anode

46. U Shaped Anode

47. Solid Rod Anode Assembly

48. Tubular Anode Strings

49. Epoxy Seal

50. Hitech Engineering Materials and Systems Ltd
Tudor House Mews, Westgate, Grantham, NG31 6LU, UK