Platinised Titanium Cylindrical Mesh Anode for Electrolysis

March 8, 2020 at 8:32 PMPlatinised

Platinum titanium cylindrical mesh commonly used in electrolysis, electroplating, gold plating applications. Platinised anodes are manufactured with a titanium or niobium base structure, in the form of either sheet, expanded mesh, rod, wire or tube. These anodes and products allow efficient and precise plating of components in areas such as Electro plating, hard chrome plating and precious metal plating. The application of these anodes has reduced the process time and dramatically improved costs in a number of operations required.

Major Applications of the Platinised Titanium Anodes:-

Gold plating, Decorative chrome plating,  PCB industry, Silver plating, copper plating, instrumentation, platinum plating, electrowinning, rhodium plating, chromium plating , sensing elements, cathodic protection and hard chrome plating.

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Platinized Titanium Mesh Anode with Frame for Electro Plating

March 2, 2020 at 8:32 AMPlatinised

Platinum is one of the precious metals. Platinized titanium anodes are extensively used in Electro Plating, metal finishing, metal recovery processes. They have successfully replaced lead anodes in electroplating applications due to their lower consumption, dimensional accuracy, ability to form precise deposit thicknesses on desired geometric shapes, predictable plating chemistry and ease of maintenance. These anodes can be designed and formed with various geometries based upon the parts to be electroplated.

For high-quality electroplating anodes, manufactured to customer specifications and design, Electroplating is used to coat certain metals with a thin layer of a pure metal, like copper, chromium, platinum, nickel, palladium silver, zinc, gold or any of several alloys. During the process, an electric current passes through a solution known as an electrolyte. The composition of the electrolyte depends on the desired coating. The item being electroplated (cathode) is immersed into the electrolyte solution, as is the plating anode.

 

Tiaano manufacturing and supplying Platinised Titanium Mesh Anode (with frame, electrical connector and Hook) and custom made anodes for Electro plating Application. We have the facility to do platinum plating 0.5 micron to 20 micron thick by the process of Electro deposition. We also do replating of existing titanium mesh.

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Posted in: Electro Plating | Hard chrome plating | Platinum plated mesh | PLATINUM PLATED SHEET

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Platinum Plated Titanium Anodes for Research and Development

March 2, 2020 at 6:21 AMPlatinised

Tiaano offer Platinum plated Anode and cathodes (Electrodes) for various research and developments. Many article provides a history of platinised anodes by reviewing innovations in the chlor-alkali industry, electroplating, electro galvanizing, electro winning etc.... These anodes are attractive for numerous reasons (e.g., long life and educed energy consumption), but they must still overcome the hurdle of cost to gain wider acceptance for applications in the various process industries.

Chemical Behavior of Platinum and Titanium:-

Platinum is preferred on an anode's outer surface because it is highly resistant to corrosion and can ensure current flow in most electrolyte media without leading to the formation of an insulating layer on itself. Because it doesn’t corrode, it doesn’t produce corrosion products and hence the consumption rate is very low.

Platinum is inert in fused salts and acids, whereas it is dissolved in aqua regia. There is no risk of hydrogen embrittlement. It is one of the few rare metals that perfectly resist chlorides of seawater.

Titanium shows reasonably good resistance to a marine environment (seawater in particular). It does not react with concentrated (80%) solutions of metallic chlorides. However, it is susceptible to attack by hydrofluoric acid (HF) and hot hydrochloric acid (HCl) of higher concentrations. Even hydrogen peroxide and hot nitric acid can attack titanium. Oxidizing agents normally do not attack titanium because it readily forms a protective oxide coating. However, non-oxidizing substances such as sulfuric acid (above 5% concentration) and phosphoric acid (above 30%) can attack titanium. From a hydrogen embrittlement point of view, titanium fares better than tantalum as an anode material.

Advantages of Platinized Titanium Anodes:-

Platinum has the advantages of electro chemical inertness, mechanical strength, workability and favorable electrical conductivity. However, it is prohibitively expensive. Development of platinum on titanium and platinum on tantalum (plated) materials has opened up the feasibility of using these for anode materials for Electro Plating, metal finishing and cathodic protection systems in critical applications.

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Platinum Plated Titanium Perforated Anode for Electrolysis

March 1, 2020 at 11:35 PMPlatinised

Platinum is the most effective metal for any electro chemical or electrolysis process due to its current conducting property. Platinum being the most expensive material rational utilization of Platinum for the greater benefit ensures economical solution. Platinized Anodes is none but a rational utilization of platinum by coating or plating limited quantity on to titanium to achieve the same result as using platinum metal.

Platinized Titanium anodes can be operated at very high current densities. 75Amps per dm² are typical. All of the current flows from the platinum plated / coated portion of the anode surface. However, if this coating is damaged, current may also flow from the substrate material resulting in its premature failure. The primary limitation of platinized anodes is that the oxide film on the substrate can break down if excessive anode-to-electrolyte voltages are encountered. The practical limit for platinized titanium is 12 volts.

Specifications of Platinized Titanium Anode:-

Substrate

Titanium 99.9% pure As per ASTM Standard

Anode Shape

Titanium Sheet, Wire, Rod, Expanded Mesh, Tube

Plating (Catalyst)

Pure Platinum

Purity of Platinum Catalyst

100%

Platinum Thickness

0.5 to 20 Micron

Plating Process

Electro deposition

Catalyst Color

Silver White

 

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Posted in: Electro Plating | Hard chrome plating | Platinum plated mesh | PLATINUM PLATED SHEET | Platinum plating

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Different Types of Platinised Titanium Anodes for Electro Plating Industry

February 16, 2020 at 10:09 PMPlatinised

Electroplating anodes are used to create products in many industries. All kinds of metals can be plated in this way, including gold, silver, tin, zinc, copper, cadmium, chromium, nickel, platinum, and lead. Electroplating is very similar to electrolysis (using electricity to split up a chemical solution).

Brief overview of Electro Plating process:-

The two are then connected to an electrical current source, by connecting the positive end to the plating anode and the negative to the item being to be plated. Once current flows through the system positively charged metal ions become attracted to the negatively charged item, thereby coating the item with the desired finish.

Key Benefits of Platinized Titanium Anodes in Electroplating:-

Ø  A low consumption rate that conserves precious platinum.

Ø  Favorable dimensional stability

Ø  Corrosion resistance ensures durability with easy maintainability.

Ø  Light weight, as well as favorable current distribution in electroplating.

Ø  High resistance to corrosion

Ø  Resistance to oxidation

Ø  High electrical conductivity

Ø  Ability to act as catalyst

Ø  High chemical stability

Ø  Capability to produce an excellent finish

Platinum is typically plated on different corrosion resistant materials such as titanium (Ti), tantalum (Ta), niobium (Nb). Tiaano offer anodes as per standard and customer’s drawings and specifications.

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Platinum Plated Titanium Anode or Electrode for Electrolysis

February 16, 2020 at 8:11 PMPlatinised

Tiaano provides Platinum plating on Titanium in the form of sheet, expanded mesh, pipe, wire, rod and custom built as Anodes and cathodes (Electrodes) for various industrial electrolysis applications, Including Electro Plating, Electrolytic Recovery, Electro – Chemical Sensing, Electro Winning refining of metals, Electro Galvanizing, , Regeneration of Chromic Acid, Electro – dialysis, Cathodic Protection, Electrolytic production of Sodium hydro Chlorate.

Type of Platinised Titanium Anodes or Electrode we offer:-

Ø  Platinized Titanium Rod Anode

Ø  Platinised Titanium Wire Anode

Ø  Platinised Titanium Sheet / Plate Anode

Ø  Platinised Titanium Expanded Mesh Anode

Ø  Platinised Titanium Perforated anode

Ø  Platinised Titanium Basket anodes

Ø  Platinised Titanium Tube Anode

Ø  Platinised Titanium Disc anodes

Ø  Platinised Titanium Strip anodes

Ø  Platinised Titanium Slotted anodes etc…

According to the substrate material used, the platinized anodes are classified as

1.       Platinized Titanium anodes

2.       Platinized Niobium anodes

3.       Platinised zirconium anodes

4.       Platinised Tantalum anodes

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Posted in: Electro Plating | Hard chrome plating | Ionisation | Platinum plated mesh | PLATINUM PLATED SHEET | Platinum plating

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Platinum Plated Sheet Anode for Electro Plating Application

February 12, 2020 at 6:46 PMPlatinised

Platinised titanium anodes combine the excellent electrochemical characteristics of platinum with the good corrosion qualities of titanium.  This anode is designed for Electro Plating application. They are characterised by the following features and advantages.

•          Energy saving potential

•          Low weight (in particular expanded metal anodes)

•          Long service time even at high current density

•          Dimensional stability, long durability of base material

•          Replating possible

•          Higher quality of end product

•          Application-specific design

 

Such anodes consist of a titanium based material in the form of expanded mesh, sheet, rod, wire, or pipe. The standard platinum layer thickness is 2 - 5 micron, in case of higher loads layer thickness of up to 20 micron. The lifetime of platinised titanium anodes is in particular dependent on the work medium (electrolyte) and the anodic current (specific current density). It should not exceed 75 A/dm2.

 

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Posted in: Electro Plating | Hard chrome plating | Platinum plated mesh | PLATINUM PLATED SHEET | Platinum plating

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Platinised Titanium Anode with Electrical Connector or Hook for Electrolysis

February 11, 2020 at 11:41 AMPlatinised

Platinum is widely used as electrodes in many industries, having special chemical & physical properties like high corrosion resistance, thermal conductivity and catalytic nature.  Being a very expensive metal, instead of using solid form, platinum is deposited on the surface of titanium or niobium, occasionally on molybdenum by micron level layer.

Electrodes [Anodes or Cathodes] are available with hanging hook, frame or band in the form of sheet, mesh, pipe, wire, rod and custom built.  Platinised titanium anode is used in electrolytes having no fluoride. Platinised niobium anodes are used in electrolytes having fluoride, where we need better conduction (its conductivity is three times of titanium)  and  also it is suitable for Sulphuric acid chromium plating bath operated at current density greater than 75A / dm². 

Types of Special Anode we offer - Application wise: -

Electro winning anode

Cathodic Protection (ICCP) anodes

Rhodium plating anode

Anodes for sensing elements

Chromium plating anode

Hard chrome plating anodes

Copper plating anodes

Silver Refining Anodes

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Benefits of Platinised Titanium Anodes over Lead Anodes for Hard Chromium Plating

January 31, 2020 at 2:57 PMPlatinised

Long life, dimensionally stable and easily fabricated into any shape:  When used in the plating process, dimension of the lead anodes are changing due to the loss of the lead oxide which is formed on  the anode during operation - it leads  surface area is getting collapsed . Also larger lead anodes can lengthen under their own weight.  Whereas titanium anodes are dimensionally stable throughout their operating life and can easily be manufactured, even in complex shapes and lengths, up to 4m. Consequently, shaped anodes can be manufactured very accurately to allow consistent plating to small tolerances, often making a further honing step unnecessary.

Homogeneous and long-lasting active surface: When lead anodes are not in use the lead oxide layers change to lead sulphate and lead chromate, which are not good conductors and consequently do not perform consistently. Platinised titanium anodes operated correctly, remain deposit free and therefore perform constantly well throughout the whole anode life.

Energy savings with shaped anodes and small anode/cathode distances: Small electrode gaps reduce electrical resistance losses in the plating bath and produce energy savings. In the case of lead anodes, which cannot be formed as accurately as a mesh, resistance losses result in bath heating, requiring further energy for cooling. Therefore, platinised titanium anodes can provide energy savings both in heating and cooling which, in turn, allows the plating chemistry to be easier to manage and maintain.

Reduced environmental burden and reduced maintenance: No chemical cleaning or brushing of passivated areas is necessary. Bath life is increased as there is no formation of lead sludge - lead anodes produce about 3g of lead sludge for every 1kg of chromium deposited in sulphuric acid type baths and even higher in other baths. Furthermore, the reduced resistance losses and subsequent need for cooling allow for easier maintenance and control of the plating chemistry.

Mesh anodes provide excellent throwing and can be used at high current densities: In electrolysis, corners and edges are preferred reaction sites; an expanded mesh has edges evenly distributed across the anode surface, thus producing uniform current density and excellent plating results. Large area mesh anodes improve throwing power and the mesh structure allows good solution movement and electrolyte exchange and plating with high current densities.

Easier handling and recoating: Positioning of lead anodes for optimising chrome plating is often awkward due to their weight, whereas spot welded or bolted mesh anodes are very light by comparison and allow safer and easier handling. Furthermore, they can be easily removed and / or replaced whenever necessary. This often allows a re-use of expensive anode materials and designs, and reduces operational costs. 

Considerations when converting from Lead to Platinised Titanium anodes:

Where platinised titanium anodes are used as a replacement for lead anodes consideration must be given to several factors to ensure that the technology is utilised to its full potential – a change in plating process is necessary and, as such, the whole plating set-up and its costs need to be considered to maximise the return on the investment in these anodes.

Consideration should be given to:-

Thorough cleaning of the plating tank and associated equipment with an adjustment of the residual lead concentration.

Bath/Electrolyte composition and operating conditions.

Current Density and operating Voltage.

Anode design.

The service life of platinised titanium depends on both the electrolyte matrix and the applied current density. Therefore, in fluoride containing baths and at current densities >75 A/dm2 platinised niobium is recommended in preference to platinised titanium.

Platinised titanium and niobium anodes are completely or partially covered with a fee microns of platinum (usually 2.5µm). Where the platinum is consumed after years of use, the underlying titanium or niobium passivates and the bath voltage rises at constant current operation. The base metals are not attacked at the usual operational voltages, in fluoride free chromium baths.

For most applications the platinum wear rate is very low and the corresponding anode life time high. In sulphuric acid chromium baths the platinum consumption is between 1g and 4g platinum per million amp hours. Careful design of the platinised anodes will increase their benefit and maximise their life span.  

Summary: Platinised titanium anodes provide a cost effective replacement for lead anodes in hard chromium plating. They provide superior quality deposition and consistency resulting in increased productivity and throughput. Cost benefit analysis demonstrates that the higher initial investment in this technology can be recouped within a short period of time.