Corrosion Short Courses: Corrosion in Microelectronics and Semiconductor Industry

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Corrosion in Microelectronics and Semiconductor Industry

Course Overview

Corrosion is responsible for more than 50% of microelectronic device failures. It is dependent on the package type, electronic materials, fabrication and assembly processes, and environmental conditions (such as humidity, contaminants, temperature, stress and electrical bias etc.) This course thoroughly and systematically covers the causes and prevention of corrosion in microelectronics and semiconductor industry.

This 2-day corrosion short course can be taken as in-house training course, online course and distance learning course worldwide. It can also be customized to meet the specific needs of your organization.

Course Outline

1 Fundamentals of Corrosion

1.1 Corrosion: what it is

1.2 Impact of Corrosion on society

1.3 Why Do Metals Corrode

1.4 Basic Concepts in Corrosion

1.4.1 Primer in Chemistry

1.4.2 Ionization of Metals in Water

1.4.3 Galvanic Cell and Galvanic Series

1.4.4 the Corrosion Cell

         1.4.5 Potential-pH Diagram
   1.5 Different Forms of Corrosion
   1.6 Corrosion in Atmosphere

1.6.1 Effect of Relative Humidity

1.6.2 Effect of Temperature

1.6.3 Effect of Air Pollutants

2 Corrosion in Microelectronics

2.1 Characteristics of corrosion in microelectronics

2.1.1 Properties of Electronic Materials

2.1.2 Failure modes, defects, mechanisms, and causes

2.1.3 Design and Packaging

2.1.4 The Environment
2.2 Common sources of corrosion in microelectronics

2.2.1 Relative Humidity and Moisture

2.2.2 Temperature

2.2.3 Contaminants

2.2.4 In-Process Sources

2.2.5 Storage and shipping

2.2.6 Human contamination

2.2.7 In-service Contamination

         2.2.8 Electrical bias
   2.3 Common forms of corrosion in microelectronics
         2.3.1 Anodic, Cathodic, and Electrolytic Reactions

2.3.2 Uniform Corrosion
2.3.3 Galvanic Corrosion

         2.3.4 Pitting Corrosion
         2.3.5 Creep Corrosion
         2.3.6 Dendrite Growth
         2.3.7 Fretting
         2.3.8 Stress Corrosion Cracking
         2.3.9 Hydrogen Embrittlement
         2.3.10 Whisker Growth

3 Corrosion in the Assembly of Semiconductor Integrated Circuits

3.1 Major Factors Causing Corrosion

3.2 Chip Corrosion

3.3 Oxidation of Tin and Tin Lead Alloys (Solders)

3.4 Mechanism of Tarnished Leads (Terminations)

3.4.1 Tarnished Leads Caused by a Galvanic Corrosion

3.4.2 Tarnishing due to Chemical Residues

3.4.3 Tarnishing Caused by Base Metal Migration

3.4.4 Tarnishing by Plating Additives

3.5 Controlling Tarnished Leads at the Assembly

3.6 Plague and Plague-like Corrosion

3.6.1 Purple Plague

3.6.2 White Plague

3.6.3 Red Plague

4 Corrosion in Semiconductor Wafer Fabrication

4.1 Corrosion During Fabrication

4.1.1 Metallization and Chlorine-Induced Corrosion

4.1.2 Corrosion Prior to the Metal Lead Etch Process

4.1.3 Corrosion Issues Related to Batch Metal-Etch Systems

4.1.4 Corrosion Issues Related to Single-Wafer Metal-Etch Systems

4.1.5 Solvent Cleanup after Metal Etch

4.2 Corrosion Due to Environmental Effects

5 Corrosion Control and Prevention in Microelectronics

    5.1 Materials Selection in Microelectronics
    5.2 Design
    5.3 Use of Packaging Materials in Microelectronics
    5.4 Control of Environment in Microelectronics

6 Corrosion Test

    6.1 Accelerated Tests
    6.2 AC Impedance
    6.3 Galvanic Effect
    6.4 Corrosion Rate Determination
    6.5 Service Life Prediction

7. Exercises and Case Studies

Who Should Attend

Engineers, designers, and QA/QC personnel working in the microelectronics and semiconductor industry.

Registration for This Corrosion Course

Click here to register for this corrosion course online, or
Click here to download this corrosion course brochure with registration form in PDF format.

In-House Training Corrosion Courses

If you are concerned with corrosion in your business, in-house training is a great solution to train a group of employees from design, production, operation, quality assurance, inspection and maintenance, and technical sales and support on corrosion control and corrosion prevention technology. The contents of all corrosion courses can be customized to fit your organization's needs.

There is no minimum or maximum number of participants required for in-house training corrosion courses. We conduct the in-house training corrosion course at your company's premises and at a time convenient to your company. Requests for in-house training corrosion courses from overseas countries are also welcome.

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Corrosion Course-On-Demand

All our publicly scheduled corrosion short courses are conducted once a year. However, you do not need to wait for one year if you have missed any of the publicly scheduled corrosion courses as we have this unique corrosion course-on-demand scheme: we will conduct the course just for you on an one-on-one basis at a time and in a location convenient to you. This option costs significantly less than a full-scale in-house training program.

Click here to contact us for a quotation for taking this course as course-on-demand.

Online and Distance Learning Corrosion Courses

All corrosion courses can be conducted through online or distance learning. An username and password will be emailed to course participants for accessing the online course materials. Alternatively, a CD-ROM containing the same online course material or a master hard copy of corrosion course notes can be sent to your organization. Instructions, course assignments, discussions and questions related to the corrosion courses are posted on the website. Free email support for online courses is provided for a period up to 12 months. A Certificate of Completion will be issued to participants who pass the online test with a score of 70% and above.

Click here to register this corrosion short course for online or distance learning.

PowerPoint Slides and Test Banks for Trainers, Instructors, Tutors, University Lecturers and Professors

If you are involved in teaching corrosion courses, you may wish to purchase a complete set of PowerPoint slides and the computerized test banks (in MicroTest format) with solutions. These presentations are suitable for teaching corrosion courses at different levels (from undergraduate to postgraduate) and durations (from 6 hrs to 40 hrs). These ready-to-use corrosion PowerPoint slides contain high quality color photographs, illustrations, animations and video clips. They can also be easily edited and customized to your own styles. The corrosion test banks contain over 1,000 corrosion questions for your use in tutorials, tests or examinations. These questions are conveniently grouped into 4 categories in the test bank: (1) true or false, (2) multiple choice, (3) calculation, and (4) reasoning and open-ended discussions).

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