Analyse métallographique

As the core acoustic component of mobile devices, smartphone speakers rely on precision micro-welding and assembly to deliver Hi-Fi sound in ultra-slim designs. Their performance & lifespan depend entirely on coil weld quality, magnetic coating uniformity, and component fit accuracy. Check out our metallographic sample prep workflow for crystal-clear micrographs: 1️⃣ P180 SiC disc → […]

In the industrial kingdom woven by steel and iron, welds never seek the spotlight, yet they hold the core power to prop up countless pieces of equipment and projects, truly deserving the name of invisible “life veins”. From the steel structures of bridges spanning rivers, to the aero-engines soaring through the sky; from the shells […]

As high-performance heat transfer components, finned tubes boost heat exchange area dramatically by adding fins to the base tube surface. This enables more compact, efficient heat transfer—making them indispensable across key industrial sectors. The welding quality between fins and base tube is non-negotiable for equipment safety & lifespan. Secure metallurgical bonding is a must to […]

In the manufacturing of drill bits and cutting tools, metallographic inspection of metal powders prior to sintering serves as the fundamental guarantee for quality control. By preparing and observing raw powder samples, the internal microstructure can be directly evaluated—including the degree of pre-alloying, morphology of primary carbides, and purity—thus predicting the uniformity of the sintered […]

When it comes to gypsum rock, don’t just think of construction gypsum boards! This sedimentary rock formed from calcium sulfate minerals has plenty of hidden talents. Its formation dates back to ancient oceans or lakes. As water evaporated, calcium sulfate crystals gradually precipitated and compacted, eventually forming the gypsum rock we see today. It is […]

Thermal spray coating is known as the “protective armor” for industrial components, widely used in machinery, aerospace, energy and other fields. It not only provides wear-resistant protection for easily worn shafts and blades, but also builds a corrosion-resistant barrier for pipelines and containers in corrosive environments. Additionally, it can realize functions such as heat insulation […]

New energy power battery modules impose extremely high requirements on the reliability of electrical connections. Aluminum busbars, thanks to their excellent electrical conductivity and lightweight characteristics, have become key connecting components inside the modules. Laser welding technology, with its advantages of high energy density and precise heat input, effectively resolves process challenges such as oxidation […]

Aluminum, a lightweight metal with balanced properties, is limited in high-end applications by its inherent insufficient strength and heat resistance. Aluminum matrix composites achieve performance breakthroughs by incorporating nano-scale or micro-scale reinforcement particles, while retaining aluminum’s excellent characteristics. Through interactions with dislocations (such as hindrance and surrounding) and load transfer effects, reinforcement particles effectively impede […]

Objective: Grind and polish the chip end face to a mirror finish, ensuring end face perpendicularity and no edge chipping. Key Challenges: Silicon-based chips are brittle, small in size, and difficult to fix during sample preparation. Material: Silicon-based chip Equipment & Accessories Equipment: Semipol high-precision grinding and polishing machine Accessories: Thin-sheet sample mounting fixture Consumables […]

Preparing high-temperature oxidation-resistant ceramic coatings on niobium and niobium alloy substrates is a key surface technology to extend their excellent high-temperature strength for applications in oxygen-containing environments. The core challenges in this field lie in resolving the enormous thermal stress caused by the mismatch in thermal expansion coefficients between metals and ceramics, as well as […]

316 powder metallurgy (PM) stainless steel, leveraging its advantages of corrosion resistance, high strength, and near-net shaping, has been widely applied in scenarios such as automotive engine valve cores, medical device implants, chemical corrosion-resistant valves, offshore platform fasteners, and electronic equipment structural components. The core purpose of its sample preparation is not only to present […]

Chip solder balls are small spherical beads made of pure tin or tin alloys. They are used to provide electrical connection and mechanical support between chip packaging and printed circuit boards (PCBs), as well as connections between stacked packages in multi-chip modules (MCMs). In Ball Grid Array (BGA) packaging, solder balls resolve the conflict between […]

Le cermet, également appelé composite à matrice céramique, est un système multiphasique composé de métaux ou d'alliages et d'une ou plusieurs phases céramiques. Ce type de matériau combine l'excellente ténacité et la conductivité thermique de la phase métallique avec la dureté, la résistance à l'usure et la résistance à la chaleur élevées de la phase céramique, optimisant ainsi les avantages de […]

En tant que support essentiel de la fabrication électronique, la qualité structurelle interne des circuits imprimés détermine directement la fiabilité des produits finaux. L'analyse métallographique est l'outil d'évaluation de la qualité le plus fiable dans l'industrie des circuits imprimés, révélant progressivement la structure interne des cartes, de l'échantillonnage au montage, en passant par le meulage, le polissage et l'observation microscopique.

Dans le domaine des sciences des matériaux, l'acier inoxydable martensitique occupe une place unique grâce à sa capacité de renforcement par traitement thermique, l'acier 431 (nuance chinoise : 1Cr17Ni2) en étant un exemple typique. Ses performances reposent sur une conception précise de l'alliage : 💠 La teneur en carbone (≤ 0,20%), sous forme d'atomes interstitiels, est au cœur de la transformation martensitique. La trempe après austénitisation forme un état sursaturé […]

Alors que les produits électroniques continuent d'évoluer vers la miniaturisation et l'intégration haute densité, le boîtier BGA (Ball Grid Array) est devenu le format de boîtier de référence pour des appareils tels que les smartphones et les systèmes aérospatiaux, grâce à sa capacité à réaliser des connexions à haute densité de broches d'E/S. Bien que les soudures entre le BGA et les circuits imprimés (PCB) soient minuscules […]

Les résistances en cuivre ne sont en aucun cas de simples « composants conducteurs » : leur principal atout réside dans leurs caractéristiques résistance-température et leur faible résistivité, qui, ensemble, sous-tendent leurs applications dans de nombreux domaines. Elles remplissent trois fonctions principales : – Détection de température : conversion de la température en signaux électriques ; – Transmission d'énergie : servitude de « ponts conducteurs » pour réduire les pertes de circuit ; – Circuit […]

Les échantillons de soudure en alliage d'aluminium ont présenté un phénomène de film arc-en-ciel après exposition à la corrosion et au nettoyage. Les photos montrent les échantillons de soudure en alliage d'aluminium avec le film arc-en-ciel, ainsi que la surface de l'échantillon préparée après imprégnation sous vide pour combler les pores. Lorsqu'il y a des espaces entre l'échantillon et la résine […]