Knowledge Pack: Characterization of Thin Films with Tribology and Mechanical Testing

Tribology Testing for Coatings Wear and Durability Performance

^{RESOURCE TYPE: Video

LENGTH: ~10 minutes}

_{PRESENTATION HIGHLIGHTS:}

[00:01:51] Introduction to tribology testing
[00:02:30] The four stages of the tribology test cycle and their applicability to films and coatings
[00:09:25] Wear, friction, and tribology tests vs. other film and coating characterization methods

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_DESCRIPTION:

In this webinar segment, Bruker application experts introduce tribology and mechanical testing as key approaches for evaluating the mechanical performance of thin films and coatings. They explain how these techniques are used to assess properties such as friction, wear, and durability under controlled contact conditions, and position them within the broader landscape of thin film characterization methods.

They also provide context on when tribology-based methods are appropriate, how they differ from other surface characterization techniques, and what types of questions they can help answer in both research and applied settings.

_{VIEWERS WILL LEARN:}

- What tribology and mechanical testing measure in thin film and coating systems
- Why friction, wear, and durability are critical considerations in thin film performance
- How tribology-based methods compare to other thin film characterization techniques
- When to use tribology and mechanical testing for evaluating coatings and material systems
- What to consider when defining test conditions for thin film applications

Presented by Kora Farokhzadeh, Ph.D., Application Scientist, Bruker (June 9, 2021)

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Thin Film and Coating Testing Using UMT Testers

^{RESOURCE TYPE: Application Note [PDF]

LENGTH: 10 pages}

^DESCRIPTION:This application note explains how tribology and mechanical testing are applied to evaluate the performance of thin films and coatings. It describes how controlled testing conditions—such as load, motion, and contact geometry—are used to measure properties including friction, wear, and durability.

The document also outlines how these methods support structured testing workflows, from defining the tribological system and identifying dominant wear mechanisms to selecting appropriate test approaches. It includes representative examples illustrating how different coating systems behave under varying test conditions and how results can be interpreted in practical contexts.

_{READERS WILL LEARN:}

How tribology and mechanical testing are used to evaluate thin films and coatings

What types of measurements are used to assess friction, wear, and durability

How test conditions influence measurement outcomes and interpretation

How to structure tribology experiments based on application needs

Key considerations when comparing coating performance across different test scenarios

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All-Inclusive Scratch Testing of Coatings and Thin Films Using Bruker's Universal Test System

^{RESOURCE TYPE: Application Note [PDF]

LENGTH: 4 pages}

^DESCRIPTION:This application note describes how scratch testing is used to evaluate adhesion, cohesion, and failure behavior in thin films and coatings. It outlines how progressively increasing load is applied to a coated surface to identify critical points where damage, delamination, or other failure modes occur.

The document also details how scratch testing can be used to compare coating systems, assess film-substrate interactions, and understand how mechanical stresses influence coating performance. It includes representative examples illustrating how different failure modes appear and how results are interpreted in the context of thin-film characterization.

_{READERS WILL LEARN:}

What role scratch testing plays in assessing adhesion and failure in thin films and coatings

What critical loads reveal about coating performance and film-substrate interactions

How to identify common failure modes such as cracking and delamination

How scratch testing is used for comparing coatings and deposition approaches

The ways scratch testing contributes within broader mechanical characterization workflows

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Scratch Testing of Nanofilms for Flexible Electronics

^{RESOURCE TYPE: Application Note [PDF]

LENGTH: 3 pages}

^DESCRIPTION:This application note examines the challenges of evaluating adhesion and mechanical reliability in ultra-thin films deposited on flexible polymer substrates. It focuses on metallic nanofilms used in flexible electronics, where coating performance is strongly influenced by film-substrate interactions and deformation under load.

The document describes how scratch testing can be adapted for these systems, including the use of alternative probe geometries, controlled load ramps, and integrated measurement techniques to capture failure behavior. It includes representative examples showing how cracks initiate and propagate in nanofilms, and how substrate deformation influences measurement outcomes and interpretation.

_{READERS WILL LEARN:}

What challenges arise when testing adhesion and durability in ultra-thin films on flexible substrates

When and why conventional scratch testing approaches may not be suitable for ultra-thin films

How test configurations can be adapted to capture meaningful failure behavior in nanofilms

How to interpret crack initiation and propagation in the context of thin film adhesion and mechanical integrity

Why substrate deformation must be considered in analyzing scratch test results for thin-film systems

Accelerating Process Optimization and Consumable Development for Chemical Mechanical Planarization

_{RESOURCE TYPE: Webinar

LENGTH: ~35 minutes}

_{PRESENTATION HIGHLIGHTS:}

[00:00:00] Introduction on CMP
[00:10:06] Instrumentation and Supply Materials
[00:23:38] Practical Applications and Experiments
[00:32:56] Conclusion

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_DESCRIPTION:

This webinar explores how tribology and mechanical testing are used to study and optimize chemical mechanical planarization (CMP), a process used to polish and planarize thin films deposited on semiconductor wafers. It explains how controlled testing can replicate aspects of CMP conditions, enabling evaluation of material removal behavior, frictional interactions, and consumable performance in thin-film systems.

The webinar also outlines how these methods support process development by helping identify key variables, compare materials and consumables, and understand how changes in test conditions influence outcomes. It includes real-world examples illustrating how tribology-based measurements can be used to accelerate optimization efforts and improve process understanding for thin-film manufacturing.

_{VIEWERS WILL LEARN:}

- How tribology and mechanical testing are applied to CMP of thin-film materials
- What measurements you can use to study friction and material removal behavior in thin films
- How to adjust test conditions to simulate aspects of CMP environments
- How tribology data supports comparison of consumables and process variables
- How laboratory test results can be used to inform real-world thin-film CMP processes

Presented by Kora Farokhzadeh, Ph.D., Application Scientist, Bruker (July 13, 2020)

Adhesion Strength and Mechanical Failure Modes in a DLC Coating

^{RESOURCE TYPE: Real-time technical demonstration

LENGTH: ~10 minutes}

_{PRESENTATION HIGHLIGHTS:}

[00:13:35] Intro to scratch testing for coating adhesion tests
[00:14:52] Assessing failure modes
[00:18:52] Scratch test on a reference coupon
[00:22:52] Scratch test on a DLC coated component pin

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_DESCRIPTION:

Bruker application experts demonstrate how tribology and mechanical testing are used to evaluate adhesion strength and mechanical failure in diamond-like carbon (DLC) coatings. They walk through a controlled test scenario designed to induce failure, showing how coatings respond under increasing load and how different failure modes emerge.

They also illustrate how test data and surface observations are used together to identify failure mechanisms, distinguish between coating and substrate effects, and assess overall coating reliability in thin-film systems.

_{VIEWERS WILL LEARN:}

- What adhesion strength and mechanical failure reveal about DLC coating performance
- How tribology testing is used to induce and observe failure under controlled conditions
- How to identify and differentiate common failure modes during testing
- Why understanding failure behavior is critical for evaluating coating reliability
- When adhesion and failure testing should be prioritized in thin-film characterization

Presented by Kora Farokhzadeh, Ph.D., Application Scientist, Bruker (June 9, 2021)

Durability and Wear Rate of a DLC Coating in Reciprocating Sliding Contact

^{RESOURCE TYPE: Real-time technical demonstration

LENGTH: ~10 minutes}

_{PRESENTATION HIGHLIGHTS}

[00:24:14] Wear test parameters and instrument setup
[00:25:39] Wear test results at 30N
[00:28:34] Pairing tribology testing with optical profiler-based observation of wear scars]
[00:30:08] Wear test results at 100N

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_DESCRIPTION:

Bruker application experts demonstrate how tribology testing is used to evaluate durability and wear behavior in DLC coatings under reciprocating sliding contact. They present a test scenario that tracks friction and wear over time, showing how coatings transition from initial run-in to steady-state behavior.

They also explain how changes in friction, wear depth, and surface condition are interpreted to assess coating performance, including the influence of load, test duration, and evolving contact conditions.

_{VIEWERS WILL LEARN:}

- What durability and wear rate indicate about coating lifespan and performance
- How reciprocating sliding tests are used to evaluate friction and wear behavior over time
- How to interpret run-in behavior and steady-state conditions in tribology data
- Why controlled test parameters are important for generating meaningful wear results
- Practical considerations for selecting load and test conditions without altering wear mechanisms

Presented by Kora Farokhzadeh, Ph.D., Application Scientist, Bruker (June 9, 2021)

Knowledge Pack: Characterization of Thin Films with Tribology and Mechanical Testing

Tribology Testing for Coatings Wear and Durability Performance

Thin Film and Coating Testing Using UMT Testers

All-Inclusive Scratch Testing of Coatings and Thin Films Using Bruker's Universal Test System

Scratch Testing of Nanofilms for Flexible Electronics

Accelerating Process Optimization and Consumable Development for Chemical Mechanical Planarization

Adhesion Strength and Mechanical Failure Modes in a DLC Coating

Durability and Wear Rate of a DLC Coating in Reciprocating Sliding Contact

See all presentations from our Thin Films & Coatings Symposium

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