No. PT 402, Jalan Satu, Tikam Batu Industrial Estate, 08600 Sungai Petani, Kedah Darul Aman, Malaysia.+604 - 439 1191/ 1192titanium@kij.com.my

pvd-coating-4

Benefits of PVD coating:

In comparison to traditional electroplating and other existing coatings, PVD Coating has the following benefits:

Corrosion and Oxidation resistant

rightNo discolouration, tarnishing, cracking or peeling under normal conditions; the coating is impervious to harsh sunlight, salt water and humidity.

Environmentally Friendly

rightNon-toxic, non-hazardous and non-polluting process.

Vandal-resistant

rightVandalism caused by marker pens and paint can be removed easily.

Economical

rightAs cost effective as traditional electroplating; the coating does not require the use of abrasive cleaners and can be wiped clean with a soft cloth.

Flexibility

rightLow modulus of elasticity which provides its flexibility and good thermal conductivity; no peeling or flaking of the coating when bent.

Appearance

rightUnique colour selections; uniform colour; smooth surface and no further processing necessary; shinier and glossier than the original materials, providing a luxurious appearance; minimal distortion of the product.

Versatility

rightSuitable for a wide range of materials, applications and finishes.

Abrasion resistant

rightHigh density; hardness over 80 HRc; longer lifespan for wear and tear.

Durability

rightLong lasting alternative for a gold finish; 15 - 25 times more wear-resistant than electroplating.

Safety

rightThe coating has been safety tested for surgical devices and food processing.

 

What is PVD Coating?

PVD coating means Physical Vapour Deposition of Titanium, Titanium Aluminium and Chromium. The process is also referred to as Titanium/Titanium Aluminium/ Chromiumplating. The technology behind PVD coating is based upon the principle of plasma acceleration. The method involves purely physical processes, such as low temperature vacuum evaporation with plasma sputter bombardment.

 

PVD coating is one of the best methods for enhancing thin film plating elements. The vacuum deposition method coats the product with a film of hard refractory material 1-2 microns thick.

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The picture above is the result of a 3000 times x-ray taken of a 1mm stainless steel plate after coating. The result shows that the 1mm coated stainless steel plate contains of 3% of the PVD coating and 97% of original stainless steel.

PVD Coating Process:

PVD coating is takes place in vacuum chamber by evaporation process. Titanium/ Titanium Aluminium/ Chromium is vaporised by means of multi arc or magnetron sputtering. The positively charged Titanium/Titanium Aluminium/Chromium ions are mixed with nitrogen or argon gas to form a plasma. The positively charged Titanium/Titanium Aluminium/Chromium plasma is attracted to the negatively charged workpiece, thereby forming a coating on the workpiece.

We are currently able to offer 2 kinds of PVD coating technologies:

  1. Multi Arc technology
  2. Magnetron sputtering technology

Magnetron sputtering technology is somewhat different from the multi arc technology. The difference is that magnetron sputtering technology uses magnetic fields to keep the plasma in front of the workpiece, intensifying the bombardment of ions. As a result, the magnetron sputtering coating has a molecular structure a few times smaller than that of the multi arc coating. The deposition is slower, thereby creating a surface layer with much higher density and greater compaction.

The PVD coating exhibits unprecedented toughness, lubricity, uniformity, and is chemically more stable in comparison to the traditional ion plating method.

What materials are suitable for PVD Coating?

PVD Coating can be used on various materials, such as stainless steel, aluminium, iron, porcelain and certain types of PVC.

Stainless steel is best recommended for PVD Coating. Stainless steel will fade and oxidise over time when exposed to the environment, humidity, and other factors. However, stainless steel that has been PVD coated:

  • will not tarnish, oxidise or discolour in harsh sun, salt water or humid environments.
  • will be impervious to extended UV light exposure, with no flaking, cracking or discolouration.
  • will be available in a wide range of colours, surface patterns and finishes.

 

The SIRIM test results for the PVD Coated Stainless steel are outlined below:

table01

The SIRIM test result via Energy Dispersive X-Ray Analysis (EDX) also showed that the composition of the coated material on the surface of the plate contained titanium of 97.8% and Nitrogen of 2.2% (TiNx).

Types of Finishing:

The finish of PVD Coating will depend upon the surface of the product being coated, for example long grain/hairline, etched, textured and mirror. Any engravings, patterns or designs which are apparent on the surface of the product will not be diminished through the PVD coating process. Even hairline markings will be clearly visible after the application of the coating.

PVD Coating Colours:

The colour of the coating can be varied. The colours currently available for PVD coating are: Gold, Champagne, Nickel silver, Bronze, Copper, Brass, Black, Rose gold, Dark Bronze (Coffee), Red Wine, Rainbow, Blue, Green and Purple We are continuously researching and developing the process to add more colours. If there is a particular colour that you are interested in developing, please do not hesitate to contact us.
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