A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
СПОСОБ ФИЛЬТРУЮЩЕГО КОНТРОЛЯ ПО АЛЬТЕРНАТИВНОМУ ПРИЗНАКУ ИЗДЕЛИЙ ИЗ АЛЮМООКСИДНОЙ КЕРАМИКИ
FIELD: machine building.SUBSTANCE: invention relates to methods for controlling the production of machine building made of alumina ceramic. Filtering control on the alternative feature of products from a vacuum-dense alumina ceramic containing in its composition oxygen-containing aluminum compounds, calcium and silicon, includes monitoring the anorthite content in the glass phase by recording the height of its peak X-ray diffraction in sintered ceramics. As a property characterizing a unit of production as defective, presence of anorthite crystals in the sintered ceramic is used, the height of the X-ray diffraction peak of which exceeds 0.01 the height of the peak of the X-ray diffraction of alpha corundum, corresponding to an interplanar distance of 0.34779 nm. Such a solution makes it possible to identify and eliminate, at the entrance inspection of products from vacuum-dense alumina ceramic, in the structure of which anorthite is contained, which can crystallize to form anomalously large crystals.EFFECT: presence of anorthite crystals in products with increased requirements for reliability contributes to failures associated with loss of appearance, corrosion and erosion of the surface with deterioration of mechanical properties.1 cl, 5 dwg
СПОСОБ ФИЛЬТРУЮЩЕГО КОНТРОЛЯ ПО АЛЬТЕРНАТИВНОМУ ПРИЗНАКУ ИЗДЕЛИЙ ИЗ АЛЮМООКСИДНОЙ КЕРАМИКИ
FIELD: machine building.SUBSTANCE: invention relates to methods for controlling the production of machine building made of alumina ceramic. Filtering control on the alternative feature of products from a vacuum-dense alumina ceramic containing in its composition oxygen-containing aluminum compounds, calcium and silicon, includes monitoring the anorthite content in the glass phase by recording the height of its peak X-ray diffraction in sintered ceramics. As a property characterizing a unit of production as defective, presence of anorthite crystals in the sintered ceramic is used, the height of the X-ray diffraction peak of which exceeds 0.01 the height of the peak of the X-ray diffraction of alpha corundum, corresponding to an interplanar distance of 0.34779 nm. Such a solution makes it possible to identify and eliminate, at the entrance inspection of products from vacuum-dense alumina ceramic, in the structure of which anorthite is contained, which can crystallize to form anomalously large crystals.EFFECT: presence of anorthite crystals in products with increased requirements for reliability contributes to failures associated with loss of appearance, corrosion and erosion of the surface with deterioration of mechanical properties.1 cl, 5 dwg
СПОСОБ ФИЛЬТРУЮЩЕГО КОНТРОЛЯ ПО АЛЬТЕРНАТИВНОМУ ПРИЗНАКУ ИЗДЕЛИЙ ИЗ АЛЮМООКСИДНОЙ КЕРАМИКИ
2018-07-13
Patent
Electronic Resource
Russian
СПОСОБ ИЗГОТОВЛЕНИЯ КЕРАМИКИ В РУЗУЛЬТАТЕ ХИМИЧЕСКОЙ РЕАКЦИИ
European Patent Office | 2020
Способ изготовления керамики на основе карбида кремния, армированного волокнами карбида кремния
European Patent Office | 2020