Tag Archive for corrosion prevention

Corrosion and Chemical Resistant Coatings

Here at us, we spend our days electroless nickel plating components for a variety of applications including aerospace, electrical/electronics, the energy industry, and general engineering.

Properties of electroless nickel coatings

Hardness

Electroless nickel coatings produce very tough, abrasion and corrosion resistant surfaces, which can be further hardened with heat treatment. The hardness of the plated surface can also be increased by decreasing the phosphorus content of the coating, usually to around 2%.

Corrosion resistance

They also have a good natural corrosion and chemical resistance. These properties can also be maximised by increasing the phosphorus content of the coating, usually to 10% or above.

Electroless nickel and phosphorous levels

The chemistry of electroless nickel plating solutions can be altered to give the plated coating different properties, for example, a medium phosphorus coating, a low phosphorous coating and a high phosphorus coating.

Medium Phosphorous electroless nickel coating

Electroless nickel coatings with medium phosphorous content are the most commonly used and applied electroless nickel coatings. They generally have a phosphorous content of 6-9% and a VPN of roughly 500. However, this can be increased further with heat treatment. The coating tends to be bright, with a normal plating thickness range of 3-50 microns. Medium phosphorous electroless nickel coatings are very stable and reliable with fast plating rates.

Low phosphorous electroless nickel coating

Low phosphorous electroless nickel coatings contain less than 3% phosphorous and are very hard. With the appropriate heat treatment, a low phosphorus coating can be in the region of 1000 Vpn. The normal plating thickness of this type of coating is in the region of 10-25 microns and is grey/silver in colour.

High phosphorous electroless nickel coating

Electroless nickel coatings with high phosphorous contents typically have very high levels of corrosion and chemical resistance. High phosphorous coatings are non-magnetic, silver/grey in colour and have a normal thickness range of 25-75 microns. Plating rates are typically slow and the plating solution tends to have a short life.

If you would like to find out more about our electroless nickel plating services call us on our phone number, email us at info@metal-finishing-company.co.uk or visit the contact page on our website to make an enquiry.

The Ultimate Corrosion Protection

Here at us, we are experts in the fields of corrosion protection and corrosion resistance. We have spent years developing extremely sophisticated metal finishing techniques in order to establish ourselves as market leaders.

Our metal plating tanks are up to 10 meters in length, making them the largest in the UK. We have even been known to construct bespoke plating tanks in house to cater for customer’s specific needs. We can plate parts of all sizes, from small components the size of pins, to large applications such as oil pipelines and castings weighing up to 25 tonnes.

us’s onsite laboratory

The corrosion protection and corrosion resistance offered by the metal finishing services at us is closely monitored to ensure that we offer our customers the very highest standards.

We have a laboratory onsite which carries out all of the necessary tests to ensure that the thickness and hardness of the coatings we provide is measured accurately. We are also committed to investing in the very latest instrumentation to continually maintain the highest levels of quality for our plating services.

If you would like to find out more about our range of metal plating and metal finishing services that are the ultimate in corrosion prevention, contact us our phone number or email info@metal-finishing-company.co.uk

Nickel and Computer Hard Disks

It’s truly amazing how far the IT industry has advanced over the past few decades. Laptops, computers and tablets continue to reduce in size, but despite shrinking, they can actually hold more data than ever before.

IBM invented the very first computer disc storage way back in 1956. The disks were about 150cm in diameter, which is roughly twice the size of an old vinyl record, and they could store 100 kilobytes of data. The computer hard disks we use today can be as small as 1cm wide and hold more than 400 gigabytes!

Hard disk drives work by using a magnetic head to move to a location where information is stored. As experts in electroless nickel plating, us have a wealth of knowledge about the use of nickel and the benefits of using nickel in everyday items such as hard drives.

Nickel really is a critical part of the technology involved in hard drives and is used in the film heads. It is applied to the magnetic heads using a plating process that uses heat, not electricity, to deposit the nickel layer.

This film head technology means that the storage density of hard drives has increased by 10 every 8 years since 1979! It also means that hard disk drives can now be used in mobile phones, video games consoles and iPods.

If you would like to find out more about us’s plating services and metal finishing services, call us on our phone number or email: info@metal-finishing-company.co.uk