PVD Coatings

The Secret To Perfect PVD Coatings – PVD Coatings Part I

PVD coatings have proven technologies for surface modification and tribological surface enhancements.

PVD stands for Physical Vapor Deposition and there are various types of PVD coatings available. The Cathodic Arc PVD coating is the best choice for wear and erosion resistance and repeatable levels of high performance. As a result, certain standards must be met with proper substrate and application parameters, in order to create Perfect PVD Coatings.

Differentiate each PVD coater by the way they approach your part. The way the coating is applied, on the surface of your part, is how PVD coatings can be differentiated. How that coating is applied can, also, have a significant impact on the performance of the product.

Every PVD coating comes with its own advantages and disadvantages, which is based on the unique application of each tool or manufactured part. For that reason, it’s necessary to ask the relevant questions beyond the smoke and mirrors of yesterday’s slow delivery of limited solutions. At Dayton Coating Technologies, our technology provider allows you access to the process, to make agile changes driven by your immediate needs.

Ask the Key Questions on PVD Coatings

If relevant questions are not being asked, then a successful and solid solution can not be guaranteed. Because of this, be sure you’re aware throughout the PVD coating process. A success-oriented PVD coating team will help you customize your coated parts, allowing you to be involved in every step along the way. Not being asked any questions leaves room for information to be missed, which would make the coating better for your tool.

Key Questions

  • what specific class thickness does your application require – would it require a class 1, 2, or 3 thickness?
  • What are your masking requirements or tolerance?
  • What are your tools’ heat treat needs, hardness requirements, and finish?
  • What type of substrate is your tool made of and what is the required surface finish after coating?

A good PVD coating team asks all the relevant questions, in order to develop a thorough understanding of an individual part’s coating needs.

Introducing ATM (Adhesion, Thickness, Morphology)

The A of ATM stands for adhesion, or the strength of a bond between the coating and your part. Adhesion will be extremely crucial in determining the usefulness of your part. Some of the most current wear-resistant coatings can share similar performance properties. Although, when it comes to all coatings, they’re only as good as how well they adhere to the surface of your manufactured part. Even secondary issues, regarding T for Thickness, can carry just as much significance.

The M of ATM stands for Morphology, or structural differences between coatings that are tertiary; it really depends on your application. Coatings like TiCN are easily burned off if run at too high of a temperature. In contrast, other coatings like AlTi or AlCr based coatings erode if not pushed hard enough. A failure to build surface temperature can quickly result in no surface Oxides forming at all.

In order to determine how useful the coating is on a part, adhesion is the most important factor for this. Careful handling and knowledgeable inspection can easily identify oxides, iron nitrides (white layer), and other adhesion inhibitors that will drastically reduce a tools performance. A coating should not be any less than an HF2 adhesion at the working surface.

If planned and communicated correctly, no matter the application, projects can yield perfect PVD coatings. The key to ensure all PVD coated parts are successful, repeatable, and efficient is proper surface preparation before PVD coating your manufactured part. Follow along in our series to Part II, to learn more about the use of our problem-solving acronym ATM.

Customer Success Guaranteed in Every PVD Coating

Allow Dayton Coating Technologies to help you improve your tools overall performance. Our high-quality team has the experience, technology, and strategies to bring our customers reputable, repeatable solutions. We ensure you’re involved in every step of the process, providing you a better PVD coated product. Contact us, today, to get started!