Center of Materials And Failure Analysis

14/11/2021 - 04:15 PM 273 views

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CÁC THÀNH TỰU CHÍNH

Director

MSc. Hoang Lam Hong

MISSION:

COMFA does both scientific research and technical service (in lab. and at onsite) in the field of materials properties characterization and failure analysis.

MAIN RESEARCH DIRECTION:

I. Industrial Technical Service

- Examine properties of metallic materials;

- Condition Assessment of plant components;

- Water quality control for boiler system, consult to avoid scale and corrosion;

- Failure analysis;

- Corrosion testing and evaluation;

- Consultancy and training.

II. Scientific and Technological Research

 COMFA has been doing the following studies:

-   Materials properties characterization
-  Atmospheric Corrosion of materials as steels, coppers and copper alloys, aluminum and aluminum alloys, zinc galvanized steel, zincalum galvanized steel and so on.
-  Corrosion mapping
-   Stress Cracking Corrosion (SCC)
-   Corrosion under insulation (CUI)

honghl@ims.vast.ac.vn

+84 982 621 343

ACHIEVMENTS

1. Industrial Technical Service

Examining the properties of metallic materials in the laboratory and at the field: analysis the chemical composition of six metals base (Fe, Cu, Al, Ti, Ni, Co), examine the microstructure of metallic materials (microstructure, grain size, evaluation of content of sulfide inclusions in steel), measurement of metals and oxide coating thickness, mechanical properties of metallic materials (hardness, tensile/bending, impact test). These services help the customer control the quality of materials, processes, and the quality of products.
Condition Assessment of plant components: using the NDT methods at the field like hardness test, analysis of the chemical composition, Replica examination, and other NDT to condition assessment of plant components during operation time. Especially, for components working under high temperature and pressure conditions in thermal power, chemical and petrochemical plants, this service has supported the customer to make plans of maintenance /replacement/prevention, reduce risks and save production costs.
Water quality control for boiler system, consult to avoid scale and corrosion: analyzing the water quality at laboratory and at the field to consult the customer how to water quality control for boiler system to avoid scale and corrosion, reduce risks and save production costs.
Failure analysis: industrial parts/components are damaged due to many different reasons: design, operating, material defects, aging … Failure analysis is a critical process of determining the root causes of problems aiming to the prevention of reaped failures, enhancement of production safety, and economic efficiency.
Corrosion testing and evaluation of components according to standards: ISO 8407, ISO 14993, ASTM B 117, JIH H 8502…, includes testing in the field and accelerated testing in the lab. With seventeen testing stations in Vietnam atmospheric including urban, industrial, and marine atmosphere environment, COMFA has been able to support industries in research/develop the new materials used in Vietnam.
Consultancy and training: Give industry the training courses/in-house seminar in relevant scope: Basis and advanced knowledge of materials, materials selection, theory and practice of materials properties testing, theory and practice of failure analysis, corrosion and protection in industry, water quality control to avoid scale and corrosion, specific corrosion in power plants, fertilizer plants and refineries …


Replica examination at on-site	Training course in Nghi Sơn 1 Thermal Power Plant

Fig. 1. Some pictures of industrial service activities of COMFA

REPRESENTATIVE PUBLICATIONS

Lê Thị Hồng Liên, Hoàng Lâm Hồng, Phạm Thi San, “Corrosion behavior of weathering steel in tropical atmosphere of Vietnam”, International Journal of Engineering Research & Science (IJOER), ISSN 2395-6992
Nguyen Thi Thanh Nga, Tadashi Shinohara, Le Thi Hong Lien, “Effects of Environment Factors on Stress Corrosion Cracking of Austenitic Stainless Steels in Atmospheric Environments” ISSN 0892-4228, Corrosion Engineering, Vol. 66, No. 6, pp. 138–142.
Phan Anh Tú, Lê Thị Hồng Liên, Đặng Nhật Khiêm, Hoàng Lâm Hồng, Đào Chí Tuệ, “ Đánh giá hiện trạng (Condition Assessment) các cấu kiện/thiết bị làm việc trong điều kiện khắc nghiệt-một công nghệ hiệu quả để đảm bảo an toàn vận hành nhà máy”, Tuyển tập báo cáo Hội nghị Khoa học kỷ niệm 25 năm Viện Khoa học vật liệu, trang 387-399, Nhà xuất bản Khoa học tự nhiên và công nghệ, 2018, ISBN 978-604-913-723-5
Dao Chi Tue, Te-Kang Tsao, Akira Ishida, Hideyuki Murakami and Le Thi Hong Lien, “Microstructure and Oxidation Behavior of Pt and PtIr Diffusion Coatings on Ni-Based Single Crystal Superalloy”, Materials Transactions, Số ISSN: 1345-9678 / 1347-5320
Nguyen Thi Thanh Nga, Le Thi Hong Lien, Tadashi Shinohara, “The influence of the environment factors and the surface treatment on Stress Corrosion Cracking of Type 304 Austenitic Stainless Steel”, International Journal of Engineering Research & Science (IJOER); Số ISSN: ISSN: [2395-6992].

FACILITIES

No.	Equipment	Manufacturer	Description of uses
1	Scanning electron microscope (SEM/EDX) Jeol JMS 6490	Jeol-Japan	- High resolution for morphology investigation (SEM) - Chemical composition analysis (EDX)
2	Atomic Emission Spectrophotometer Spectrotest TXC 03	Spectro – Đức	Chemical composition analysis of steels and other alloy based on copper, aluminum, nickel, titanium and coban (at on-site and in laboratory)
3	Atomic Emission Spectrophotometer PMI Master-Plus*	Oxford/ Đức	Chemical composition analysis of steels and alloys based on copper, aluminum and nickel (at on-site and in laboratory)
4	Spectrophotometer PC MultiDirect	Aqualytic/ Germany	Water quality analysis (at on-site and in laboratory)
5	Spectrophotometer DR 900	Hach/USA	Water quality analysis (at on-site and in laboratory)
6	Cyclic Corrosion Test Chamber Ascott CC450XP	Ascott /England	Atmospheric accelerated corrosion testing (with cyclic T&RH and Cl^-&SO₂)
7	Dissolved Oxygen Meter Direct - OX 24*	Aqualytic/ Germany	Dissolved oxygen measurement
8	Conductivity Meter Direct - CD 24*	Aqualytic/ Germany	Measure Conductivity and Total Dissolved Solid of solution
9	pH Meter Direct - pH 24*	Aqualytic/ Germany	pH measurement
10	Conductivity Meter Cond 197i* (low range)	WTW/ Germany	Measure low conductivity of solution, especially use for determining conductivity of water and steam in boiler system)
11	Optical Microscope Axiovert 40 MAT	Carl Zeiss/ Germany	Metallography investigation of metallic materials
12	Stereo Microscope STEMI DV4	Carl Zeiss/ Germany	Metallography investigation
13	Stereo Microscope STEMI-2000C	Carl Zeiss/ Germany	Metallography investigation
14	Portable Optical Microscope PORTAMET	Buehler /USA	Metallography analysis of metallic materials at on-site
15	Portable Optical Microscope GXM-FM	Buehler /USA	Metallography analysis of metallic materials at on-site
16	Cutting Machine DELTA ABRASIMET	Struers/ Denmark	Cutting machine with cooling fluid which is used for investigation of metallic materials microstructure
17	Small Cutting Machine MINITOM	Struers/ Denmark	Cutting machine with cooling fluid which is used for investigation of metallic materials microstructure
18	Grinding and Polishing Machine LABOPOL 25	Struers/ Denmark	Sample preparation for examining metallography microstructure of metallic materials
19	Rockwell Hardness Tester Rockwell AR10	Mitutoyo, Japan	Stationary Rockwell Hardness testing
20	Vicker and Brinell Hardness Tester AVK-Co	Mitutoyo/ Japan	Stationary Vicker and Brinell Hardness testing
21	Micro Hardness Tester IndentaMet 1106*	Buehler/ USA	Micro hardness testing (range 10 gf to 1 kgf)
22	Portable Hardness Tester MIC 10 DL/GE*	Krautkramer/ Germany	On-site Hardness testing
23	Impact Tester RKP-450	Zwick/ Germany	Impact test of Charpy sample
24	Tensile Tester Supper L120	Tinious Olsen/ USA	Tensile test, bending test and compression test
25	Thickness Ultrasonic Equipment DMS-2TC	GE/ Germany	Thickness measurement
26	Stress Tester P-3	Vishay/ USA	Stress test and residual stress measurement
27	Penetrate Testing (PT) and UV lamp		Surface crack examination
28	Magnetic Yorke WE-7K	Wester Instrument /Canada	For magnetic test (MT)
29	Autolab PGSTAT-302N	Metrohm/ Hà Lan	Measurement electrochemistry properties of materials which is used for corrosion investigation
30	Balance Sartorius TE 214S with accuracy of 0.0001g	Sartorius/ Germany	- Determine corrosion mass loss for small samples - Prepare chemical solutions for analysis - Others
31	Balance Sartorius TE 612 with accuracy of 0.001g	Sartorius/ Germany	- Determine corrosion mass loss for big samples - Prepare chemical solution for analysis

HIGHLIGHTS
Scientific research, technology development, application and transfer of science and technology products and services; international cooperation and training in the field of materials science and technology and other related fields.

28 + Year of establishment
Established on June 11, 1993
240 + staffs
3 Professors, 9 Associate Professors, 13 Senior Researchers, 80 Ph.
Arwards
First Class Labor Medal