To provide α-alumina crystal structure of the method of manufacturing a film body particularly excellent in heat resistance, including: 1) having made of Al and Ti as an essential component and the metal compound B, C, N, O, etc. constituting the laminating the hard coating film is ...
Process for producing alumina coating composed mainly of alpha-type crystal structure, alumina coating composed mainly of alpha-type crystal structure, laminate coating including the alumina coating , member clad with the alumina coating or laminate coating, process for producing the member, and ...
Crystal structure of κ-alumina: an X-ray powder diffraction,TEM and NMR study The crystal structure of κ-alumina (κ-Al 2 O 3 ) has been determined ab initio from an X-ray powder diffraction pattern (reliability factors: R Bragg =0... B Ollivier,R Retoux,P Lacorre,... - 《Journ...
(1988) The precipitation of alpha-TiO2 from supersaturated solutions of Ti in alumina (Crystal structure and morphology). Philosophical Magazine A, 57, 525-542.Jayaram, V. (1988) The precipitation of alpha-TiO2 from supersaturated solutions of Ti in alumina 476 (Crystal structure and morphology)...
The present invention relates to alpha-alumina comprising monocrystalline alpha-alumina particles which are homogeneous, contain no seed crystal, have an octahedral or higher polyhedral shape, and a D / H ratio of from 0.5 to 3.0. where D represents the maximum particle diameter parallel to the ...
PROCESS FOR PRODUCING ALUMINA COATING COMPOSED MAINLY OF a-TY PE CRYSTAL STRUCTURE, ALUMINA COATING COMPOSED MAINLY OF a-TY PE CRYSTAL STRUCTURE, LAMINATE COATING INCLUDING THE ALUMINA COATING, MEMBER CLAD WITH THE ALUMINA COATING OR LAMINATE COATING, PROCESS FOR PRODUCING THE MEMBER, AND PHYSEP ...
A powdery alpha -alumina comprising single-crystal alpha -alumina grains which are homogeneous and free from any crystal seed inside, form an at least eight-sided polyhedron, and have a D to H ratio of 0.5 to 3.0 (wherein D is the maximum grain diameter in parallel with the hexagonal latt...
structureofα-aluminahollowfibre. 4 3.Micro-channelsopeningofα-aluminahollowfibre Theoutersurfacemorphologyoftheα-aluminahollowfibrewasstudiedbyusinga scanningelectronmicroscope(SEM,JEOLJSM-5610). FigureS2.Outersurfaceofα-aluminahollowfibre(micro-channelopening). 5 4.XRDstudyofUiO-66 Thecrystalstructure...
A powdery alpha -alumina comprising single-crystal alpha -alumina grains which are homogeneous and free from any crystal seed inside, form an at least eight-sided polyhedron, and have a D to H ratio of 0.5 to 3.0 (wherein D is the maximum grain diameter in parallel with the hexagonal latt...
Alumina is produced by electro-melting high-quality bauxite ore to produce brown corundum, while high-quality aluminates are used to produce powder and white corundum. Their natural crystal structure gives them high hardness and fast cutting performance. At the same time they are often used as ...