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NATIONAL METALLURGICAL LABORATORY About NML | About us | Mineral processing | Metallurgy | Chemistry | Temperature Calibration | NABL Accreditation | Quality policy | Human resources | Recent Publications | NML Brochure | Contact us |
RESEARCH AND DEVELOPMENT ACTIVITIES Current
projects ¤
Surface
Mechanical Attrition Treatment (SMAT) ·
Surface nanocrystallization of steel and alloys
steel using SMAT ·
SMAT as a pretreatment coating for diffusion
coatings such as nitriding and boriding ·
Influence of SMAT on electro- and electroless
deposition processes ·
Influence of SMAT on Ti alloys for biomedical
applications
¤
Surface
modification of Ti alloys for Biomaterial applications ·
Thermal oxidation of CP-Ti and Ti-6Al-4V alloy
and evaluation of their corrosion and tribocorrosi
behaviour ·
Development of nanoporous TiO2 coating
on Ti alloys by anodizing
¤
Fretting corrosion ·
Fretting corrosion of surface modified Ti alloys
for orthopaedic implant applications ¤
Development
of Mg based biodegradable biomaterial by surface
engineering
Projects already completed ¤
Corrosion
behaviour of Ti alloys for Biomaterial applications ·
Corrosion
behaviour of Ti-Mo alloys for orthopaedic implant
applications · Corrosion behaviour of Ti-Mo alloys in fluoride ion containing medium for dental implant applications ¤
Fretting corrosion ·
Fretting
corrosion of Ti alloys for orthopaedic implant
applications and development of fretting corrosion maps ·
Fretting
corrosion of tin plated contacts ·
Fretting
corrosion behaviour of electroless Ni-B coated contacts ¤
Electrodeposition
·
Electrochemical studies on the competitive
process at the metal/solution interface ·
Electrodeposition of metals and alloys in
the presence of organic filming additives ·
Role of ion pairing agents on the kinetics
of electrochemical reduction of metal ions · Role of nitrate addition in promoting the codeposition of second phase particles during electrodeposition of
metals ·
Electrodepositon of Ni-P alloy deposits
for hydrogen evolution catalysts applications ·
Electrodeposition of nanocrystalline Ni-B
alloy coatings ·
Electrodeposition of Ni-B-Si3N4
composite coatings ·
Electrodeposition of PANI and PANI-Ni
layered coatings ¤
Electroless
deposition ·
EL Ni-B
coatings with high hardness and wear resistance ·
Development
of low temperature bath for deposition of EL Ni-B
coatings ·
EL Ni-P
and Ni-B based composite coatings ·
EL
Ni-Co-P and Ni-Co-B ternary alloy deposits
·
Development
of EL Ni-P/Ni-B duplex coatings using dual baths ·
Development
of EL Ni-P graded coatings by sequential immersion in
three different baths ·
EL Ni-P
coatings on iron powder to improve the oxidation
resistance ·
EL Ni-P
and Ni-B coatings on NdFeB magnet to improve the
corrosion resistance ·
EL
deposition of Ni-P-B ternary alloy deposits ·
EL
deposition of Ni-Zn-B ternary alloy deposits ¤
Phosphate
conversion coatings ·
Formulation and optimization of low
temperature phosphating baths · Evaluation of film forming surfactants as additives in phosphating baths aiming at the total elimination of the
chromic acid sealing stage ·
Acceleration of low temperature
phosphating baths by galvanic coupling and
electrochemical treatment ·
Development of zinc-zinc phosphate
composite coatings by cathodic electrochemical treatment · Role of anodes on the corrosion resistance of zinc phosphate based composite coatings deposited on steel
by cathodic electrochemical treatment · Cathodic electrochemical deposition of zinc-zinc phosphate composite coating on steel, aluminium and
magnesium ·
Cathodic electrochemical deposition of
composite coatings using different metallic anodes ¤
Electrosynthesis
of nanocrystalline ceramic thin films and powders ·
Cathodic electrosynthesis of alumina thin
films and ultrafine powders ·
Cathodic electrosynthesis of ultrafine
magnetic iron oxide
¤
Corrosion
and scaling ·
Stray
current corrosion of a buried pipeline ·
Development
of an accelerated test method for assessing the
efficiency of scaling inhibitors ·
Mannish
base compounds as corrosion and scaling inhibitors for
brass ·
Dezincification
of brass in sulfide polluted environment ·
Effect
of lead content on the dezincification behaviour of
leaded brass ANALYTICAL
TESTING SERVICES
Our scientists and technical officers possess expertise in chemical analysis, which enables us to serve a wide range of clients, representing government, academia, industries and other enterprises. The services offered vary from routine chemical analysis to complex and/or customized analyses. We have earned an international reputation in solving the problems faced by our clients. The reputation of our laboratory and our continued effort to achieve greater goals provides a high level of confidence for our clients
J
To deliver world-class analytical services using
the knowledge and technical expertise J To satisfy the industry needs for analytical services using creativity, flexibility and technical expertise in performing simple or complex analyses with total focus on customer satisfaction and quality workmanship.
State-of-the- NML
Madras Centre procures the most appropriate
instrumentation that will yield the most accurate
results for analyzing the chemical composition of metals
and alloys. We live by our commitment to procure the
latest and most advanced technology, with significant
capital allocated on an annual basis. All of our
equipment used for testing is routinely serviced and
calibrated by the authorized service providers. Major
Facilities ·
Optical Emission Spectrometer (Spectrolab,
Germany) ·
Atomic Absorption Spectrophotometer (GBC Avanta,
Australia) ·
Multi-channel
Potentiostat (ACM Instruments, UK) ·
Potentiostat/Galvanostat
(ACM Instruments, UK) ·
Fretting
corrosion test assembly (Wear and Friction Tech, India) ·
Pulse
plating rectifier (Komal Scientific, India) ·
Plating
cells for electro- and electroless deposition
Type
of analysis performed ü
Chemical
analysis of metals and alloys §
Carbon
steels, alloy steels, cast iron §
Aluminium
and aluminium alloys §
Zinc §
Corrosion
resistance of reinforcement steel bars §
Chemical
resistance of the fusion bonded epoxy coating which is
applied on steel reinforcing bars § Resistance of the fusion bonded epoxy coating which is applied on steel reinforcing bars to §
Non-stick
plastics coated domestic cooking utensils §
Corrosion
resistance of stainless steel surgical instruments § Quality of passivation of stainless steel articles, industrial equipments and components including §
Quality
of chemical dip passivation coating on wrought or cast
stainless steels ü
Coating
mass/Coating thickness measurement
Accreditation
ü
Our laboratory has
been awarded with ISO 9001-2005 certification by TUV-SUD.
This certification ensures compliance of our internal
quality system, technical staff and and general
requirements for the competence of testing laboratories. ü We also have NABL accreditation (ISO/IEC 17025:2005) for chemical testing of metals and alloys by optical emission spectrometer and atomic absorption spectrophotometer. The details of the scope of accreditation are available at this link. Sample
submission procedure S
Sample
for chemical analysis along with a letter of request and
necessary testing charges should be submitted to our
front office from Monday through Friday (except
holidays), from 9:00 am to 5:30 pm. Samples received
after 4:30 p.m. will be processed in the following
business day. S The
samples can also sent by regular mail/courier to the
following address:
The Scientist-in-charge National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani Chennai-600 113 India S The laboratory reserves the right to deny acceptance of any hazardous samples. The client is responsible for providing all the characteristic information about those samples to safeguard the health and safety of our scientific and technical staff. Procedure
for analysis J The test protocol for analysis will be chosen based on the type of samples or the request made by the Client. J
If
subcontracting is necessary, those samples will be sent
only to NABL accredited laboratories or those, which
meets our vendor/supplier certification program
requirements. The client will be informed about the
subcontracting. Intellectual
Property J
Methods,
discoveries, procedures, and equipment developed by NML
Madras Centre for any specific project/analysis shall
remain the sole property of the laboratory unless
otherwise agreed upon a signed contract with the client. Turnaround
time J
We
understand our clients’ testing needs and importance.
Our scientific and technical staffs are committed to
deliver the results in time. The typical turnaround time
for analysis of metals and alloys: ü by optical emission spectrometer - 2 working days ü
by atomic
absorption spectrometer – 4 to 5 working days § For other type of samples, the turnaround time will vary with the type of sample and the test methodology. Issue
of test reports
The
results of the chemical analysis will be reported in the
form of a test report. The hard copy of the test
report(s) can be collected from our front office or it
will be mailed to the client through courier. Depending
on the client’s request, the test report can be sent
through fax or e-mail (scanned copy or pdf format). Re If
the client feels that the analysis should be repeated,
then upon request, the analysis will be performed again.
However, if the results of the repeat analysis confirm
the original results, then the client has to bare the
charges for the same. If the results of the repeat
analysis differ significantly from the original
findings, then there will be no charge for the
additional work. Sample
Retention/Return Policy é
Metals and
alloy samples submitted for chemical analysis will be
retained for a period of 6 months prior to its disposal.
Water, sludge and environmental samples will be retained
only for 30 days beyond reporting date prior to its
disposal. é Samples submitted for analysis can be returned to the client if it is required for further analysis. In such cases, the client should make a request while submitting the sample for analysis.
Client visit/audit of our
laboratory/test facility J
We invite clients to visit our lab/facilities
during normal business hours (prior notice is
requested). The laboratory reserves its right to limit
or deny inspection privileges if it is necessary or
advisable for reasons of health, safety, protection of
the laboratory’s competitive position and/or
preservation of confidential information. Confidentiality J
No reports or copies of any laboratory document
will be sent to anyone other than the client. Payment J Payment in the form of a demand draft drawn in favour of NML Madras Centre, should be made in advance J Discount in testing charges can be considered based on the number of samples and the nature of the test requested.
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