What is BS 4479-9 - Low pressure and vacuum deposited coatings about?
BS 4479 is a British Standard series that discusses the design of articles that are to be coated. The purpose of the BS 4479 series is to provide the design and recommendations for articles that are to be coated.
BS 4479-9 is the second part of the BS 4479 gives recommendations for design features to be followed in the application of coatings by low pressure or vacuum deposition to various substrates. An outline of the three main processes involved is also given, together with some guidance on operational conditions.
Note 1: It is recommended that Part 1 of BS 4479 be read in conjunction with this Part. Part 1 includes a list of British Standards relating to processes covered by BS 4479 but not necessarily referred to in each Part.
Note 2: The titles of the publications referred to in BS 4479-9 are listed on the inside back cover.
Who is BS 4479-9 - Low pressure and vacuum deposited coatings for?
BS 4479-9 on low pressure and vacuum deposited coatings is useful for:
- Metallic product and coating manufacturers
- Aerospace and automotive industry
- Electronics industry
- Medical tool manufacturers
- Chemical engineers
- Mechanical engineers
- Quality control personnel
Why should you use BS 4479-9 - Low pressure and vacuum deposited coatings?
There is a wide variety of coating processes, developed and established industrially, intended to enhance or transform the surfaces of manufactured articles. However, time and money are often wasted because the design of many articles is unsuitable for the coating process to be applied. Coating is only one part of the manufacturing process and should not be ignored, or viewed in isolation, when considering the overall costs and quality.
It is essential that the design of any article required to be coated should take into account not only the function of the article and its method of manufacture but also the limitations imposed by the coating. In this regard, the recommendations in BS 4479-9 are intended to provide guidance towards good practice when it comes the design of articles to be coated.
BS 4479-9 focuses on design considerations for low pressure and vacuum deposited coatings and provides diagrams illustrating preferred and deprecated design features for articles to be coated by vacuum deposition. BS 4479-9 covers three main methods of low pressure and vacuum deposition i.e vacuum evaporation, ion plating and sputtering.
The design guidance in BS 4479-9 for low pressure and vacuum deposited coated components can help minimize the risk of corrosion, provide good adhesion and improve efficiency of the substrate.
Thus, adopting best industry practices for application of coatings by low pressure or vacuum deposition can play a positive role in the overall performance and service-life of the end-product.