Corrosion resistance, the alumina quality sintering body which is superior in heatproof bombardment resistance and endurance

摘要

Topic Corrosion resistance, the alumina quality sintering body which is superior in heatproof bombardment resistance and endurance, the production manner and offer of the component for heat treatment which consists of the said alumina quality sintering body. Solutions(A) alumina content 99.5 weight % being the alumina quality sintering body which consists of above, (b) apparent density is above 3.7g/cm3, (c) average crystal grain size is 20 - 70 millimicrons, in the surface where (d) length of the crystal grain of the surface which is vertical to one aspect and that aspect of the sintering body/breadth is together 2.0, or more (e) is vertical to one aspect and that aspect length of the crystal grain/length of the aspect of the one whose breadth is large/breadth: R1 length of aspect of smaller one/breadth: The ratio of R2: R1/R2 1.0 - 2.0 the corrosion resistance which features that is, the alumina quality sintering body which is superior in heatproof bombardment resistance and endurance, the production manner and the component for heat treatment which consists of the said alumina quality sintering body. Choice figure It is not