Preface

Chapter 8 **Accelerated Cavitation Damage of Steels in Liquid Metal**

Chapter 9 **Post-Incipience Cavitation Evolution of an Eccentric**

Shengqiang Ma, Jiandong Xing, Hanguang Fu and Shizhong Wei

**Environments 121**

**VI** Contents

**Journal Bearing 139**

Coda H.T. Pan and Daejong Kim

Cavitation erosion is one of the most popular phenomena of the destruction of engineering materials working in water conditions and various kinds of liquids. The cavitation effect is defined as a physical effect, induced by a variable field of liquid pressures, where bubbles or other voids (caverns)—containing steams of a given liquid, gas, or a steam–gas mixture—are formed, expanded, and disappear.

A better understanding of all aspects related to cavitation wear will allow for more thought‐ ful analysis in the selection of innovative engineering materials additionally protected by various technologies or techniques in the field of surface engineering, and optimization of the design of constructional elements used in the cavitation environment in such industries as: river and sea transport, machining and cutting of hard metals, surface cleaning of vari‐ ous materials, chemical and petrochemical processes of, e.g., emulsification or depolymeri‐ zation, liquid sterilization processes, and also methods used in aesthetic medicine or in heating engineering, where cavitation processes are at the stage of initial investigations.

This book intends to provide the reader, not only students but also professional engineers who are working in the industry, as well as specialists, with a comprehensive overview of the state of the art in new trends, research results on issues related with cavitation, cavitation wear, and the ability to protect newly developed structural elements against the action of the cavitation environment. The chapters in this book have been written by respected and wellknown researchers and specialists from different countries. We hope that after studying this book you will have objective knowledge of new aspects of the topic concerning cavitation.

**Wojciech Borek, Tomasz Tański and Mariusz Król**

Institute of Engineering Materials and Biomaterials Silesian University of Technology Gliwice, Poland

**Chapter 1**

**Provisional chapter**

**Introductory Chapter: Cavitation - An Overview of New**

Cavitation is one of the very well-known phenomena of the destruction of engineering materials working in water conditions or any other kinds of liquids at variable pressure value. Better understanding of all aspects related to cavitation wear will allow for more thoughtful analysis in the selection of innovative engineering materials additionally protected by various technologies or techniques in the field of surface engineering and optimization of the design of constructional elements used in the cavitation environment in such industries as river and sea transport; machining and cutting of hard metals; surface cleaning of various materials; chemical and petrochemical processes, e.g. emulsification or depolymerization; and liquid sterilization processes and also in methods used in esthetic medicine or in heating engineering, where cavitation processes are at the stage of initial investigations. This book intends to provide the reader, not only for students but also for professional engineers who are working in the industry as well as to specialists, a comprehensive overview of the state-of-the-art in new trends, research results on issues related with cavitation, cavitation wear and the ability to protect newly developed structural elements against the action of the cavitation environment. When designing the individual components of machines or entire devices, one must draw special attention to the resistance of the elements working there, to tribological damages like mechanical, fatigue, adhesion, abrasion, hydrogen and other damages as well as to nontribological damages like corrosion, diffusion, cavitation, erosion, ablation and many others. Considering the mechanisms mentioned above, cavitation erosion and cavitation wear are often ignored during engineering design, the dual character of which has an effect on the economics and development of particular fields of the economy in the negative and positive sense. Cavitation is generally described as a phenomenon consisting of implosion of gas bubbles in liquid, with such bubbles formed because of a rapidly falling pressure causing

**Introductory Chapter: Cavitation - An Overview of** 

© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use,

distribution, and reproduction in any medium, provided the original work is properly cited.

DOI: 10.5772/intechopen.81956

**Research Results**

**1. Introduction**

**New Research Results**

Wojciech Borek, Tomasz Tański and Mariusz Król

Wojciech Borek, Tomasz Tański and Mariusz Król

Additional information is available at the end of the chapter

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/intechopen.81956

#### **Introductory Chapter: Cavitation - An Overview of New Research Results Introductory Chapter: Cavitation - An Overview of New Research Results**

DOI: 10.5772/intechopen.81956

Wojciech Borek, Tomasz Tański and Mariusz Król Wojciech Borek, Tomasz Tański and Mariusz Król

Additional information is available at the end of the chapter Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/intechopen.81956
