Permeation, or the permeability coefficient, of a polymer refers to the volumetric flow of gasses, under controlled conditions, through the material’s surface. Permeability does not equal leakage! Leakage refers to gasses that flow around the seal. Permeation is a fundamental property of elastomers and is often desired to measure the rate of transmission or diffusion of gas through the material.
This white paper answers the following questions: What do I need to consider when connecting the leak detector to a coating system? How can I shorten the response times of the leak detector? How can the mass flow controller be tested separately? How do I perform a sniffer leak detection on gas supply lines? What influences the signal recovery behavior? What to do in case of an intense signal from the helium leak detector? With this white paper, our experts share their know-how and provide you with a separate checklist to help you avoid falsified measurement results.
Hiden Analytical has gained the prestigious ISO 14001:2015 environmental accreditation signifying the company as a leader in environmental management in all areas of the business. Hiden’s green strategies have been integral to the development of an environmental management system (EMS) which provides a framework for improving resource efficiency as well as waste and cost reduction throughout the bespoke manufacturing of our systems.
Los Angeles-based materials science company American Elements announced the further expansion of its rare earth and less common metals organometallics production facilities to meet growing demand for the materials as precursors for thin film deposition, including chemical vapor deposition (CVD and MOCVD) and in the production of catalysts used in the hydrocarbon and petrochemical industries.
Since 2000 Vacuum Technology & Coating Magazine has been the industry's leading source for the latest articles, news, and product and service information. Below we describe some of the terms that you will find in a typical issue of VT&C.
Vacuum Coating (Vacuum Deposition and Thin Film Deposition) is the process of depositing a film or other material atom by atom or molecule by molecule onto a surface in a low pressure environment or vacuum.
Physical Vapor Deposition or PVD refers to vacuum deposition methods which involve the material (which is being deposited) going from a condensed phase to a vapor phase and then to a thin film condensed phase. Sputtering and evaporation are common PVD processes.
Sputtering refers to a type of process used to deposit thin films and employs a plasma to bombard and eject atoms from a target source.
Evaporation refers to the heated source material being evaporated in a vacuum. Vacuum allows vapor particles to travel directly to the target object, where they condense back to a solid state. (called a Deposition Source) refers to a type of process used to deposit thin films and employs a plasma to bombard and eject atoms from the target source (called a Deposition Source).
Vacuum Hardware refers to the types of hardware and components that are used in the vacuum process. There are many types of hardware used in this process, some examples are flanges, fittings, seals, valves, and chambers.
Thin Film Metrology involves determining the optimal thickness, composition and/or condition of a coating through various techniques and mathematical calculations.
Gas Analytical Systems are used in the analysis of residual gases within a low pressure environment or vacuum.
Vacuum Pumps are devices that remove gas atoms and molecules for the purpose of leaving behind a partial vacuum. Some examples of types of vacuum pumps are rotary vane pumps, diaphragm pumps, and scroll pumps.
Every issue of VT&C includes a product showcase focused on a specific topic relevant to Vacuum Processing, please see our editorial calendar which lists the topic for each issue.