摘要:
Provided is sintered zirconia which can be inhibited from deteriorating at low temperatures. Also provided are a sintering composition and a calcined object which are precursors for the sintered zirconia. The burned surface of the sintered zirconia gives an X-ray diffraction pattern in which the ratio of the height of the peak present around the location where a [200] peak assigned to the cubic system is to appear to the height of the peak present around the location where a [200] peak assigned to the tetragonal system is to appear is 0.4 or more, and a region located at a depth of 100 µm or more from the burned surface gives an X-ray diffraction pattern in which the ratio of the height of the peak present around the location where a [200] peak assigned to the cubic system is to appear to the height of the peak present around the location where a [200] peak assigned to the tetragonal system is to appear is 0.3 or less.
摘要:
A method for manufacturing a composite ceramic body (24, 86, 96) with occluding a plurality of pores that are open at its surface of a porous ceramic body (28), the method includes the steps of impregnating a polysilazane solution (42) including polysilazane having a repetition structure of fundamental units of at least one of [-Si (H) (C n H 2n+1 ) -NH-] and [-Si (C n H 2n+1 ) 2 -NH-], and a predetermined organic solvent, into the plurality of pores of the porous ceramic body, and heating the porous ceramic body to convert the polysilazane in the plurality of pores into ceramic material.
摘要翻译:一种制造复合陶瓷体(24,86,96)的方法,所述复合陶瓷体(24,86,96)在多孔陶瓷体(28)的表面具有开口的多个孔隙,所述方法包括以下步骤:浸渍聚硅氮烷溶液(42) 具有[-Si(H)(C n H 2n + 1)-NH-]和[-Si(C n H 2n + 1)2 -NH-]中的至少一个的基本单元的重复结构的聚硅氮烷,以及 预定的有机溶剂加入到多孔陶瓷体的多个孔中,并加热多孔陶瓷体以将多个孔中的聚硅氮烷转化为陶瓷材料。
摘要:
Provided is a high-strength zirconia sintered body in which the progression of low-temperature degradation is inhibited. The zirconia sintered body contains partially-stabilized zirconia as a matrix phase and contains at least one element from among phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The content of the abovementioned element(s) in the zirconia sintered body ranges from 4×10 -4 mol to 4×10 -2 mol with respect to 1 mol of zirconium(IV) oxide. Preferably, the zirconia sintered body further contains 0.03% to 3% by mass of silicon dioxide.
摘要:
Provided is a fluorescent zirconia material. When a frame (14) is fired at a high temperature of 1300-1600°C, a fluorescent property, i.e., an ability to generate fluorescence upon UV irradiation, is imparted to the frame (14) comprising zirconia, due to Eu 2 O 3 which is contained in the zirconia material constituting the frame (14). For example, when the cross section surface of the frame (14) is irradiated with a UV lamp, a black light or the like upon breakage, the frame generates fluorescence and thus shows traceability. When irradiated with a blank light, the frame (14) generates blue fluorescence and a thin part in an upper layer (18) and a part not provided therewith also have the same fluorescent property as the upper layer (18), which brings about an esthetical merit too.
摘要:
Method and apparatus for measuring a surface temperature of an object body (12), by calculating a temperature at each local portion of an image of the object body, on the basis of a radiant intensity ratio at each pair of corresponding local portions of a first and a second image which are obtained by respective first and second photosensitive areas (B 1 , B 2 ) of an image detector (32; 32'), which detect respective radiations having respective first and second wavelengths selected from a light emitted from the surface of the body, wherein the image detector is constructed such that each pair of mutually corresponding two photosensitive elements in the respective first and second photosensitive areas, which corresponds to each pair of mutually corresponding two local portions of the first and second images, has a percentage of difference in light sensitivity of not higher than 0.25%.