The compressive strength of the high temperature refractory material (hot crushing strength, abbreviated HCS) is the maximum pressure of the material at a high temperature higher than 1000-1200 ℃ hot state per unit area can withstand (in units of MPa). Refractory 
compressive strength generally increases with the increase of temperature changes significantly. With increasing temperature from the room temperature, the intensity decreased linearly. Since then, some materials still continue to decline with increasing temperature; some material when the temperature rises within a certain range, with increasing temperature, and reaches a maximum in accounts under a certain temperature, followed by a sharp decline.
compressive strength generally increases with the increase of temperature changes significantly. With increasing temperature from the room temperature, the intensity decreased linearly. Since then, some materials still continue to decline with increasing temperature; some material when the temperature rises within a certain range, with increasing temperature, and reaches a maximum in accounts under a certain temperature, followed by a sharp decline.
Changes in the compressive strength of high temperature refractory products by certain components of the material, in particular wherein the matrix or binding phase change occurs at a high temperature is controlled. Generally, the crystal is completely composed of sintered refractory material, and due to the high temperature grain boundaries wherein the grains are prone to plastic deformation, especially when its loading rate is small are more likely to plastically deform, so the strength increases with increasing temperature and
reduced. Some of the crystal when the melt or at an elevated temperature to form a molten body, such as brick, alumina bricks, and clay, the matrix phase mainly composed of glass, as the temperature increases, the strength of the multiphase material of this was also due microstructure changes with temperature decrease.
reduced. Some of the crystal when the melt or at an elevated temperature to form a molten body, such as brick, alumina bricks, and clay, the matrix phase mainly composed of glass, as the temperature increases, the strength of the multiphase material of this was also due microstructure changes with temperature decrease.
When the temperature is further increased, since the viscosity of the glass phase becomes brittle toughness, so that binding between the material particles are more strongly, so that the strength is remarkably improved. Then, as the temperature increases, the melt viscosity of the material due to a sharp decline in the strength of the material also will be a sharp decline.
没有评论:
发表评论