Surface texture and microstructure analysis
Surface texture and microstructure analysis is a fundamental service at the INFINITIA laboratory for understanding and optimizing the functionality of surfaces in industrial materials.
From our Forensic Engineering and Materials Characterization department, we carry out detailed studies that allow us to accurately evaluate the morphology, composition, and functional behavior of all types of materials.
This type of analysis is applied in quality validation processes, failure investigation, development of new materials and functional surfaces, and evaluation of surface treatments.
At INFINITIA, we have specialists who work with the latest technologies in microscopy, metallography, and surface testing to obtain key data and provide customized solutions for each client
What is surface texture and microstructure analysis?
Microstructure and surface texture analysis consists of studying the internal and external characteristics of a sample at a microscopic scale.
In the case of microstructure, elements such as grain size and distribution, phases, defects, crystalline orientation, and inclusions in metallic, ceramic, or polymeric materials are analyzed. Techniques such as optical microscopy, scanning electron microscopy (SEM), EBSD analysis, and EDX spectroscopy are used for this purpose.
At the same time, surface texture is characterized using techniques such as profilometry, roughness analysis, and contact angle, which allow critical parameters in the performance of functional surfaces to be evaluated.
These studies are essential for understanding the impact of manufacturing processes, heat treatments, or mechanical treatments on the properties of the final product. At INFINITIA, we adapt these analyses according to the type of sample, its intended use, and the technical objectives of each project.
Benefits of microstructure and surface texture analysis
One of the main advantages of this type of analysis is the ability to predict the functional behavior of the material and anticipate failure mechanisms.
For example, poor phase distribution can compromise mechanical strength, while inadequate roughness can affect adhesion, cleanliness or behavior in contact with fluids.
At INFINITIA, we have applied this service to sectors such as automotive, capital goods, electronics and food, developing surfaces with antimicrobial, self-cleaning or wear-resistant properties, among other functionalities.
How does INFINITIA do it?
At INFINITIA, we take a comprehensive approach to the analysis of surface texture and microstructures. We start with the precise preparation of samples (by cutting, polishing or chemical etching) and apply techniques such as SEM-EDX, metallography, hardness analysis and contact angle measurement.
We also develop microstructured surfaces using technologies such as injection molding (IMM) and laser engraving on plastics, polymers, steels, and aluminum.
Our laboratory has advanced equipment and experience in standard and customized testing.
In addition, we analyze the usability of surfaces based on their expected final functionality: cleanability, antibiofilm, hydrophobic or hydrophilic properties.
All this with a personalized, technical, and rigorous approach, tailored to each industrial customer.
Types of Surface Texture and Microstructure Analysis
At INFINITIA, we perform different types of analysis aimed at studying the internal microstructures and surface texture of industrial materials. Our goal is to gain an in-depth understanding of how these characteristics affect the functionality, durability, and performance of the product, both in the development and validation of advanced technical solutions.
Microstructural analysis using microscopy
This analysis allows us to observe the internal structure of metallic, ceramic, or polymeric materials at a microscopic scale. We use optical microscopy for initial analyses and scanning electron microscopy (SEM) combined with EDX and EBSD to study crystalline phases, grain orientation, segregations, and the presence of inclusions.
An example applied at INFINITIA is the evaluation of microcracks in stainless steel weld areas to ensure their structural reliability.
Metallographic analysis
Using metallographic techniques (cutting, mounting, polishing, and chemical etching), we prepare samples that are then analyzed to characterize their microstructure. This technique is essential in heat treatment validation processes or defect detection in machined parts.
At INFINITIA, for example, we have used this analysis to validate the correct manufacture and approval of steels.
Surface texture is evaluated using techniques such as optical profilometry, contact roughness measurement, and laser interferometry. These studies allow us to quantify parameters such as roughness, waviness, and microtexture, which affect properties such as friction, adhesion, and tribological behavior.
At INFINITIA, we have analyzed the texture of injection molds to ensure the correct replication of microstructured details in technical plastics.
Contact angle measurement
This test measures the interaction of a liquid with the surface, indicating its hydrophobic or hydrophilic character. It is essential in studies of cleanability, antibiofilm, and behavior against moisture.
We have applied this technique to validate antimicrobial coatings on surfaces in contact with food, verifying their ability to repel fluids and prevent residue accumulation.
Functional testing of microstructured surfaces
On surfaces functionalized by laser or injection, we evaluate their behavior against specific functions: water repellency, cleaning efficiency, biofilm resistance, or interaction with contaminants.
At INFINITIA, we develop technical surfaces for food and applications with high hygiene requirements, validating their performance using methods such as the JIS test for antimicrobial activity or cleaning simulations.
Applications of Microstructure and Surface Texture Analysis
Microstructural and surface analysis has essential applications in various industrial sectors. At INFINITIA, we work closely with our clients’ quality, R&D, and production teams to select the most appropriate techniques and extract critical information for decision-making.
Automotive
In the automotive sector, microstructural and surface texture analysis is key to ensuring the reliability of components subjected to fatigue, friction, or environmental exposure. This type of study allows for the optimization of heat treatments, validation of coatings, and anticipation of critical failures during prolonged use.
- Failure analysis of components to identify mechanisms of thermal fatigue wear.
- Comparative evaluation of surface treatments to reduce wear and tear and evaluate them under operating conditions.
- Verification of microcracks in welded components, ensuring their durability under thermal cycles.
Food
In food environments, surfaces must prevent the accumulation of residues, facilitate cleaning, and prevent microbial proliferation. Analysis allows materials and treatments used in processing equipment to be validated, complying with hygiene regulations such as HACCP or JIS.
- Contact angle measurement to validate non-stick treatments.
- Cleanability assessment through roughness and cleaning cycle simulation.
- Validation of stainless steel components for high temperatures.
Medical devices
In the healthcare field, the surface microstructure affects biocompatibility, cell adhesion, and biofilm formation. Analysis allows the development of safe, hygienic, and functional devices.
- Characterization of non-stick coatings using contact angle and SEM.
- Analysis of aluminum anodizing that showed signs of flaking.
- Antimicrobial testing of new materials in accordance with JIS Z 2801.
Technical packaging
In technical packaging, surface texture influences adhesion, barrier performance, and thermal compatibility. Surface analysis enables the development of more efficient and sustainable materials.
- Roughness and thickness measurement in multilayer films.
- Validation of textures in polymers to extend the shelf life of food.
- Evaluation of scratch resistance of plastics subjected to intensive handling.
Electronics and energy
In electronics and energy, microstructures determine thermal behavior, electrical conductivity, and mechanical reliability. Analysis ensures the performance and safety of encapsulations, substrates, and cooling systems.
- SEM analysis of PCB boards and temperature sensors to verify uniformity and absence of faults.
- Roughness measurement on metal surfaces to optimize heat transfer.
- Evaluation of microstructures to prevent delamination failures.
Microstructure and surface texture: the basis for continuous material improvement
Surface texture and microstructure analysis is a strategic tool for optimizing the design, functionality, and durability of industrial materials and components. From validating surface treatments to detecting critical defects or evaluating functional properties such as hydrophobicity or antimicrobial resistance, this type of characterization provides high-value technical information for informed decisions in R&D, quality, and production.
At INFINITIA, we apply a comprehensive approach that ranges from sample preparation to final functional analysis, combining advanced techniques in microscopy, profilometry, contact angle testing, metallography, and structural analysis. Our industrial laboratory is equipped to offer specific solutions both in highly regulated sectors—such as automotive, food, and medical devices—and in industries where competitiveness demands optimized surfaces for each application.
A deep understanding of internal microstructure and surface topography allows us not only to prevent failures, but also to develop more efficient, safer, and better performing products. In addition, current trends in functionalized surfaces, advanced microtextures, and laser manufacturing are opening up new possibilities that INFINITIA is already exploring with its customers.
Having INFINITIA as a technology partner in microstructure and surface analysis gives companies the confidence of having an expert team with forensic vision, analytical capabilities, and a focus on continuous product and process improvement.
