Objective
The processing techniques used to manufacture materials and components is a very broad activity encompassing materials science, mechanical engineering, electronic engineering, chemistry and economics. Commercial processing is now accomplished by automated and computer controlled equipment yet the engineers and researchers must understand the basic principles to program and control the parameters. This course is to develop the scientific base and fundamental nature of some common processes. The aim of this course is to provide students with the basic understanding of manufacturing processes, and the relationships between process design and fundamental concepts in transport phenomena, and properties.
用于製造材料同組件嘅加工技術係一項非常廣泛嘅活動，包括材料科學，機械工程，電子工程，化學和經濟學。 商業處理而家由自動化和電腦控制嘅設備完成，但工程師和研究人員必須了解編程和控制參數嘅基本原理。 本課程旨在發展一些常見過程的科學基礎和基本性質。 本課程嘅目的係為學生提供對製造過程嘅基本理解，以及過程設計與傳遞現象和屬性中嘅基本概念之間嘅關係。
Syllabus
The following topics will be covered:
MODULE 1 : PROCESSES FOR PARTICULATE MATERIALS AND BULK MATERIALS
a: Powder synthesis
Methods for powder production and blending. Particle shape and size distribution. Properties of powders.
b: Compaction of Powders
Various densities. Pressing. Isostatic pressing. Metal injection molding. Sintering and mechanisms. Processing ceramics, cermets and composite. Properties of sintered products.
MODULE 2: VACUUM PROCESSES
a: Vacuum
Introduction to vacuum technology, systems, pumps and gauges. Units of pressure. Deposition chambers, target and substrate preparation.
b: Physical vapor deposition
Physical vapour deposition processes and sputtering. Polycrystalline and epitaxial film production. Effects of substrates
c: Chemical Vapor Deposition
Films and nanostructures from gas precursors. Atomic layer deposition. Nanoscale control of film chemistry.
d. Growth progress and Microstructure control
Zone structure model, amorphous and crystallinity control, pore control and defects evolutions
MODULE 3: SOLUTION PROCESSES
a: Basic Principles
Precursor solutions, reaction rates, ligand additives for size and shape control.
b:Sol Gel
The principal of Sol gel and the related process. Morphology control, Chemical reaction of sol gel, the advantages and disadvantages of sol gels.
c: Chemical Solution Deposition — Basic Principles
Basics of sol-gel, chelate and related processes. Film formation: spin coating, dip coating and spray coating. Spray pyrolysis. Examples of chemical synthesis. Examples of chalcogenide semiconductor synthesis.
Learning Outcome
At the end of this course the students will be able to
1. Explain the relationships between basic concepts and design of the processing route.
2. Apply basic concepts to predict the material behaviour during processing.
3. Predict the structure and properties of the end products
4. List the advantages and limitations of each process.
5. Choose the best process for a particular component, device or material.
