The properties of materials include two aspects: mechanical properties and technological properties.
Extended data:
The properties of materials can be divided into two categories:
1. Characteristic properties belong to the inherent properties of materials, including thermal properties (heat capacity, thermal conductivity, heat of fusion, thermal expansion, melting point, etc. ), mechanical properties (elastic modulus, tensile strength, impact strength, yield strength, fatigue strength, etc. ) and electrical properties (conductivity, resistivity, dielectric properties, breakdown voltage, etc.). ).
Magnetism (paramagnetism, diamagnetism, ferromagnetism), optical properties (light reflection, refraction, absorption, transmission, luminescence, fluorescence, etc. ), as well as chemical properties (that is, the activity and ability of materials to participate in chemical reactions, such as corrosion resistance, catalytic performance, ion exchange performance, etc. ).
2. Functionality refers to the property that when a certain action is exerted on a material under certain conditions and within certain limits, the action is transformed into another functional form through the material.
Including thermoelectric conversion performance (thermistor, infrared detection, etc.). ), photo-thermal conversion performance (such as flat plate heat collector that converts sunlight into heat energy), photoelectric conversion performance (solar cell), electromechanical conversion performance, magneto-optical conversion performance, electro-optical conversion performance, acousto-optical conversion performance, etc.