#materials science

• Allocure — A structural phenomenon or a process of thermal or chemical treatment through which the crystalline phase or internal structure of a material is modified in a way that differs from its standard thermodynamic evolution. In advanced metallurgy or solid-state physics, the term indicates a controlled deviation in the solidification or crystallization process, generating alternative mechanical properties.
• Alpax — A commercial or technical designation attributed to a cast aluminum-silicon alloy (silumin), typically containing between 10% and 13% silicon; a very lightweight metallic material that stands out structurally due to its excellent fluidity in a molten state, low contraction upon solidification, and high resistance to corrosion. In industry, it is widely utilized for manufacturing complex cast components for automotive engines, aviation, and pump casings.
• altaite — A rare metallic mineral, a lead telluride with the chemical formula PbTe, crystallizing in the cubic (isometric) system; it stands out structurally due to a yellowish-white or tin-white color with bright yellow reflections, high density, and perfect cleavage. It was initially discovered in the Altai Mountains, from which it derives its name, encountered in hydrothermal veins often associated with native gold and other tellurides.
• Aluminate — A salt of aluminic acid formed by the reaction of aluminum or its oxide with a strong base (e.g., sodium aluminate). As an adjective or past participle, it describes a substance or material that has been treated or structurally combined with aluminum (such as aluminate cement).
• Aluminized — Having been coated with a thin, fine protective layer of aluminum via spraying, vacuum deposition, or galvanic processes; an object made of metal, glass, or plastic treated to achieve high reflectivity or enhanced corrosion resistance.
• Aluminous — Containing aluminum or alumina in a considerable proportion; a characteristic attributed to soils, clays, rocks, or chemical compounds that present a high concentration of this metal.
• Non-magnetic — Non-magnetic; possessing no magnetic properties or failing to interact with an external magnetic field. In materials science, it applies to substances with negligible magnetic susceptibility, used in precision instruments or MRI equipment to avoid electromagnetic interference.
• Crushing — The act of crushing, grinding, or fragmenting and its result; a physical or mechanical process of breaking solid bodies or raw materials into smaller fragments or powder.
• Amorphous — Lacking a definite crystalline structure or regular geometric form; a solid substance in which the constituent atoms or molecules are arranged chaotically, without long-range spatial symmetry (such as glass or pitch). In biology, it describes structures without a defined anatomical shape, and figuratively or psychologically, it applies to an energetic-less, apathetic, passive, or inert person.
• Amorphous — The feminine form of the adjective 'amorf'; lacking a definite crystalline order or a regular geometric shape. In materials science, it describes a solid substance whose constituent particles are arranged randomly, while in a figurative or characterial sense, it defines a person or an attitude devoid of dynamism, energy, willpower, or initiative.
• Amorphism — The state, property, or character of being amorphous; the total absence of an ordered crystalline structure or a regular geometric shape within a solid body. In mineralogy and crystallography, this phenomenon reflects long-range structural molecular disorder, causing isotropic properties that remain constant in all spatial directions.
• Amorphism — A structural state or property of certain solid bodies of lacking an internal crystalline organization and a regular external shape, their constituent atoms or molecules being randomly arranged. In a biological sense, the term indicates the absence of a clearly defined anatomical conformation or structure in certain lower organisms or parasitic cells.
• To treat chemically — To subject a material, an alloy, or a metal part to a special thermochemical or protective treatment (often through the surface diffusion of a chemical element or through structural anodization) in order to increase its resistance to corrosion, mechanical wear, and oxidation. It is a rare technical term used in certain industrial niches and materials engineering laboratories.
• Passivated — Having undergone the process of passivation or surface treatment; a material, alloy, or mechanical component structurally protected through a thermochemical or chemical surface treatment. In an industrial sense, it describes the final state of a precision part whose physical properties have been optimized to resist the action of acids, moisture, or mechanical abrasive wear.
• Anisotropic — Exhibiting physical or mechanical properties (such as thermal conductivity, elasticity, expansion, or light refraction) that vary depending on the direction of measurement or propagation through that substance. This structural characteristic is specific to most crystals and composite materials, where the asymmetric arrangement of atoms determines a physical behavior dependent on vector orientation.
• Anisotropy — The property of certain substances (especially crystals) or physical media to present different mechanical, optical, thermal, or electrical characteristics in different directions. This structural phenomenon results from the non-uniform arrangement of atoms or molecules in space, representing the opposite of isotropy and forming the basis for the operation of many advanced optical and electronic devices.
• Inorganic chemist — A male specialist, researcher, or chemist who carries out his professional activity in the field of inorganic chemistry. His structural and research work focuses on the study of elements in the periodic table, the synthesis of new materials, catalysts, semiconductors, and mineral or coordination compounds that do not contain bonds specific to carbon chemistry.
• Antimony — A chemical element with atomic number 51 and symbol Sb, located in group 15 of the periodic table, being a lustrous, silvery-white metalloid that is brittle and possesses low thermal and electrical conductivity. In a structural and industrial sense, it is widely utilized in manufacturing antifriction alloys, battery plates, semiconductor materials, and as a flame retardant agent.
• Antipyretic — Combating, reducing, or regulating high fever (in a medical sense) or stopping, isolating, and resisting the direct action of heat and extreme temperatures (in a technical sense). As a medication (antipyretic), it acts on the thermoregulatory centers in the brain to lower body temperature; as an industrial material, it functions as a protective shield against thermal propagation.
• Burn — The first-person singular and third-person plural form of the verb 'a arde' (to burn); the action of undergoing a rapid chemical oxidation reaction accompanied by the release of heat and light (combustion); to destroy or consume a structural material through fire. In a physical or technological sense, it describes the transformation of chemical energy into thermal energy or the operation of incandescent components within an electrical circuit.