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Analysis and testing

The labs of CRITT MATÉRIAUX INNOVATION offer you all means need to determine chemical composition, mechanical and tribological properties, corrosion endurance, on the core or surface of your parts or samples

Wearing and rubbing testing Mechanical testing Ageing testing Chemical analysis

Analysis and testing

The labs of CRITT MATÉRIAUX INNOVATION offer you all means need to determine chemical composition, mechanical and tribological properties, corrosion endurance, on the core or surface of your parts or samples

Wearing and rubbing testing Mechanical testing Ageing testing Chemical analysis

Chemical analysis

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analysises

Chemical analysis and micro analysis lab of CRITT MATÉRIAUX INNOVATION offers very complete skills and facilities for chemical element dosing, core or on surface, for all kind of materials or samples.

It is equipped with the following techniques
  • Optical emission spectrometry (ICP-OES) Spark Optical Emission Spectrometry Glow discharge spectroscopy (GD-OES)
  • X-ray fluorescence spectrometry
  • Infrared spectrometry
  • Dosing of gas content by reductive fusion in metals (hydrogen, oxygen, nitrogen)
  • Dosing of carbon or sulphur by combustion in metals
  • Gas chromatography
  • Dosing of total organic carbon (TOC)
  • X-ray diffraction
  • Scanning electron microscope coupled to an EDS probe (Energy Dispersive X-ray Spectrometry)
  • More informations
    Some examples

    A large part of the chemical analysises carried out by CRITT MATÉRIAUX INNOVATION can be performed under NF EN ISO/IEC 17025 (COFRAC) or NADCAP accreditation, or AIRBUS or SAFRAN qualification. See detail here

  • Dosing of elements present in a metallic sample or part and checking the conformity to a standard or a specification. Our facilities can carry out analysis from a very few quantity of material.
  • Research of the grade of a metallic sample of unknow composition.
  • Dosing hydrogen in titanium
  • Cleanless checking
  • Determination of the chemical composition profile of a coating, according with the thickness
  • Mapping of chemical elements on surface or core of a sample, by EDS probe.
  • Research, by X-ray diffraction, of phases present in a sample of hydroxyapatite.

    Mechanical testing

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    mechanical tests

    The mechanical testing lab of CRITT MATÉRIAUX INNOVATION have a pool of machines which can perform a large tests range, according with existing standards or protocol adapted for your request :

    Static or dynamic tests:
  • Traction and compression (from 1,25 to 240 000 N)
  • Torsion (from 0,1 to 100 N.M°
  • Axial/torsion
  • Shearing
  • Flexion by points
  • Screwing tests (until +/- 16 turns)
  • Rotative flexion tests
  • Impact bending
  • CRITT MATERIALS INNOVATION can design and carry out specific bed tests adapted for customised parts or tests protocol. Some tests can be performed in a specific environment (temperature, liquid medium…). Please, ask us for more precisions.
    More informations
    Some examples

    A large part of the mechanical tests carried out by CRITT MATÉRIAUX INNOVATION can be performed under NF EN ISO/IEC 17025 (COFRAC) or NADCAP accreditation, or AIRBUS or SAFRAN qualification. See detail here.

  • Uni- axial tensile test on standard sample
  • Uni- axial fatigue test on manutention hooks
  • Fatigue tests on corporectomy model
  • Flexion by point test on plate
  • Auto tapping performance
  • Disassembling test by torsion or pull-out
  • Impaction test on intervertebral cage

    Wearing and rubbing tests

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    tests

    Facilities of the CRITT MATÉRIAUX INNOVATION tribology platform, allow the evaluation of wearing and rubbing properties of materials and parts for several fields of activity. We are equipped with :

  • Two scratch-tests: instrumented scratch test for the analysis of the strength of thin films and their level of adhesion to the substrate, at micro and nanometric scales
  • A Taber® abrasimeter : strenght test for surfaces abrasion (standards ISO 7784-2, ASTM D 4060, ASTM F 1978)
  • Pin-disc tribometers: for measurement of rubbing coefficient and wear of materials in various mediums:
  • Standard, pin or ball-disc, from 1 to 20 N
  • Hight temperature, until 800°C, from 1 to 20 N
  • High loads with multi directional movements, until 500 N (standard ASTM F 732)
  • Wear simulators for joint implants: hip, knee… (standard ISO 14242 & 14243)
    More informations
    Certification

    With these equipments, associated with its numerous facilities for surface characterization, CRITT MATÉRIAUX INNOVATION propose to support your projects for new materials development, surface treatment, comparative validation, close realistic tests conditions

    A part of these tests can perform under ISO/CEI 17025 (COFRAC) accreditation. Find detail here

    Ageing tests

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    tests

    CRITT MATÉRIAUX INNOVATION offers you a large range of ageing tests adapted to your requiments:

  • Corrosion resistance tests in neutral salt spray
  • Tests under climatic conditions
  • Tests under wet conditions
  • ECC1 tests (RENAULT D17 2028 method)
  • Accelerated ageing under pure oxygen
  • More informations
    Some examples

    A part of these tests can perform under RENAULT or AIRBUS qualification. See details here

  • Ageing on UHMWPE samples, followed by physico-chemical tests, targeted to determine their stability to oxidation (ISO 5834-3 or ASTM F 2003-2 standards)
  • Determination of the resistance of a coating subjected to salt spray -> wetness -> drying cycles
  • Resistance test for the passivation layer of a stainless steel.
  •  

    Examples of applications

    Evaluation of a Surface Mechanical Attrition Treatment (SMAT) on the scratch resistance of CoCrMo (CCM) material and the wear of a CCM/UHMWPE couple, used in hip prostheses :

    Conclusion:

    Decrease of scratch’s density and deepness on the metallic material as well as the mass loss on the UHMWPE antagonist.

    Micro scratch test

  • Analysis of surfaces scratch resistance
  • Thin films adherence
  • Abrasive wearing by multiple passages of the indentor
  • Determination, under load and residual, of indentor penetration deepness
  • Conventional pin-disc tribometer

  • Accorded with ASTM G99 standard
  • Rubbing coefficient measurement
  • Wearing test under ambient air/ liquid medium/ lubricated
  • Wear evaluation by weighing, grooves areas, SEM observations…
  • High temperature tribometer

  • Temperature until 800°C
  • Load from 1 to 20 N
  • Speed max 500 turn/minute
  • Continues measurement of rubbing coefficient
  • Rotative or rotative/alternative mode
  • Possibility of tests in fretting
  • Can highlight high temperature rubbing’s specific phenomenas, as impact of oxide layers witch are forming on surface, their lubricating properties and disaggregation cinetic.  

    High loads tribometer

    The 3 stations tribometer, multi directional, apply higher loads than conventional pin-disc devices.  
  • 3 simultaneous stations, with independent load
  • Rubbing coefficient measurement
  • Multi directional trajectory: displacement as two directions (x, y)
  • Triangular trajectory…
  • High loads, until 500 N
  • Accorded with ASTM F-732-00 standard, annexes 1 and 2, « Wear testing of polymeric materials used in total joint prostheses n »
  • It can sollicite polymeric materials in a more realistic way, generating shear constraints. Moreover, the tested pin’s contact area can be increased maintaining realistic contact pressures, therefore the sample’s surface topography influence is taken in account.  

    Contact:
    Clémence Demangel – c.demangel@critt-mi.com

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