Case
Trojan is your trusted partner for metallographic sample preparation. We are committed to helping you discover the truth of material — with precision, reliability, and innovation.Every material tells a different story — and requires a different approach. Our application specialists have developed optimized preparation procedures for:Titanium alloys, nickel-based super alloys, aluminum alloys, Hard/soft steels, cast iron, copper alloys. Ceramics, composites, thermal spray coatings. Semiconductors, PCBs, microelectronics.Rocks, minerals, and polymers.We work closely with each customer to develop customized preparation methods that deliver consistent, high-quality results for your specific materials and applications.
Purpose：The purpose of this application guide is to prepare and examine the microstructure of pure nickel.The pure nickel sample is prepared by sectioning (CT 250S manual cutting machine), hot mounting (FlexPress automatic mounting machine), and grinding and polishing using the Alpha 610 automatic grinding and polishing machine After surface preparation, the specimen is etched with Marble’s reagent to reveal the microstructure, which is subsequently examined under an optical microscope.
2026
09
01
Purpose：Pure Molybdenum Metallographic Sample Preparation Method.Molybdenum and its alloys are known for their high melting point, low thermal expansion coefficient, high strength and hardness at elevated temperatures, and excellent resistance to acids and alkalis. Referred to as the "energy metal," they are widely used in steel, aerospace, nuclear power, petroleum, solar, and wind energy industries.
2026
09
01
Purpose：Observe the microstructure of pure copper. The pure copper sample undergoes cutting (CT-250S), mounting (FLEX-PRESS automatic modular hot mounting machine), grinding and polishing (Alpha-610), and surface treatment inspection under a microscope (MN80). The sample is then etched using ferric chloride and hydrochloric acid aqueous solution to observe its microstructure.
2026
09
01
Purpose：Test porosity and observe the microstructure of powder metallurgy samples. Powder metallurgy involves forming and sintering metal powders (or mixtures of metal and non-metal powders) to produce metal components or materials. Key advantages include the ability to form special materials (e.g., refractory metals, pseudo-alloys, porous materials) and ensure uniform composition distribution. Samples undergo cutting (CT-250V), mounting (TJ2228 cold-curing resin and ThetaVAC-2 vacuum cold mounting machine), grinding/polishing (Alpha610), and porosity measurement via metallographic microscope (MN80). Etching with 4% nitric acid alcohol solution reveals the microstructure.
2026
09
01
Purpose：Observe the microstructure of nickel-based superalloys. Turbine engine blades, as one of the most critical components in aerospace engines, largely determine engine performance (higher turbine inlet temperatures result in greater thrust and thrust-to-weight ratios). Metallographic inspection of material microstructure during blade manufacturing is essential for quality control. Samples undergo cutting (TableCut200), mounting (FLEXPRESS fully automatic modular hot mounting machine), grinding/polishing (Alpha610), and etching with Marble’s reagent to observe the microstructure.
2026
09
01
Purpose：The martensitic steel specimen is prepared by sectioning using the TableCUT-200 Automatic Precision Cut-Off Machine, hot mounting with the FlexPress automatic mounting machine, and grinding and polishing using the ALPHA 610 automatic grinding and polishing machine. After etching, the microstructure of the specimen is examined under an optical microscope.
2026
09
01
Purpose：Observe the microstructure of lead brass. Lead brass exhibits excellent machinability, mechanical properties, and resistance to cold/hot pressure processing, making it ideal for soldering and welding. It is widely used in structural components such as screws, washers, gaskets, bushings, nuts, and nozzles. Samples undergo cutting (TableCut200), mounting (FLEX-PRESS fully automatic modular hot mounting machine), grinding/polishing (Alpha610), and etching with a ferric chloride-hydrochloric acid aqueous solution to observe the microstructure (MN80 metallographic microscope).
2026
09
01
Purpose：Industrial pure iron is a type of steel primarily composed of iron (99.50%–99.90%) with carbon content below 0.04%. Though not entirely pure iron, it is classified as such due to its near-pure composition. Industrial pure iron is exceptionally soft, highly ductile, and exhibits excellent electromagnetic properties. Common applications include: 1.Deep-drawing material: Capable of being stamped into highly complex shapes. 2.Electromagnetic material: Offers high magnetic permeability and low magnetic resistance.
2026
09
01
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