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Power Ultrasonics by Karl F. Graff, Juan A. Gallego-Juarez

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20

Ultrasonic degassing of liquids

D.G. Eskin    Brunel University, Uxbridge, UK

Abstract

This chapter gives an overview of fundamental and practical aspects of ultrasonic degassing of liquids. The role of main process parameters as well as challenges and opportunities of ultrasonic melt degassing are discussed.

Keywords

Degassing

Re-gassing

Degassing nucleus

Degassing kinetics

Hydrogen

Vapor

Liquid metal

Aluminum

Cavitation

Acknowledgment

The author thanks Professor G. I. Eskin for fruitful discussions and permission to use data and figures from his earlier work.

20.1 Introduction

Ultrasonic degassing is a phenomenon that has been studied since the 1920s and has been used in some industrial or pilot-scale applications. This chapter focuses ...

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