A polycrystalline cubic boron nitride, PCBN, material is provided. The material comprises between 30 and 90 weight percent cubic boron nitride (cBN) and a matrix material in which the cBN particles are dispersed. The matrix material comprises particles of an aluminium compound; the matrix material particles having a d50 when measured using a linear intercept technique of no more than 100 nm.

A blade for a turbomachine comprising an outer shell and an inner core which is at least partially enclosed by the outer shell and has a higher porosity than the outer shell. The outer shell is formed by a ceramic body or a body made of a ceramic matrix composite material, and the inner core is formed by a fiber-reinforced ceramic or a fiber-reinforced ceramic matrix composite material.

A sintered material includes a first material and a second material, the first material being partially stabilized ZrO.sub.2 having a crystal grain boundary or crystal grain in which 5 to 90 volume % of Al.sub.2O.sub.3 is dispersed with respect to a whole of the first material, the second material including at least one of SiAlON, silicon nitride and titanium nitride, the sintered material including 1 to 50 volume % of the first material.

The present invention relates to an information storage medium and a method for long-term storage of information.

The present invention relates to an information storage medium and a method for long-term storage of information.

A coated tool according to the present disclosure is a coated tool including a base body and a coating film located on the base body. The coated tool has a first surface with a rake face, a second surface with a flank face, and a third surface located between the first surface and the second surface and being a C surface or an R surface. The coating film includes a first coating film located on the first surface and/or a second coating film located on the second surface, and a third coating film located on the third surface. When a wavenumber of a maximum Raman peak of the first coating film is referred to as a first wavenumber, a wavenumber of a maximum Raman peak of the second coating film is referred to as a second wavenumber, and a wavenumber of the maximum Raman peak of the third coating film is referred to as a third wavenumber, the third wavenumber is smaller than the first wavenumber and the second wavenumber.

A surface-coated cutting tool includes a coating layer having a laminated structure that includes first sublayers and second sublayers having a cubic crystal structure and has an average thickness of 0.5 to 8 m, the bottommost and topmost sublayers being both first sublayers; the first sublayer has an average thickness of 0.1 to 2 m and a composition (Al.sub.1xCr.sub.x)N, where x=0.20 to the second sublayer has an average thickness of 0.1 to 2 m, has a composition (Al.sub.1-a-bCr.sub.aSi.sub.b)N where a=0.20 to 0.60, b=0.01 to 0.20, and has a repeated variation in Si content with an average interval of 1 to 100 nm between local minima and local maxima, the average local maximum and minimum are each within a specific range; and the diffraction peaks of the 111 and 200 diffraction peaks each have a predetermined full width at half maximum and a peak intensity.

The present invention provides a sintering control method of ceramic manufacturing. The method includes the following steps: S1: preparing a pore-forming agent containing a porogen; S2: mixing the pore-forming agent with a ceramic slurry and forming a greenpart; S3: sintering the greenpart at a first temperature in an oxygen-free environment to form a semi-finished object; and S4: sintering the semi-finished object at a second temperature in an oxygen-containing environment to form a ceramic article. Wherein, the first temperature is higher than the second temperature. While the porogen is a carbon-based material, the second temperature is from 300 C. to 600 C., and the porosity of the ceramic article may reach 30% to 70%. By this method, the property of the ceramic article (including mechanical strength, porosity, pore shape and size) can be designed according to requirement and controlled for quality assurance.

To provide a sintered material having excellent oxidation resistance, as well as excellent abrasion resistance and chipping resistance. A sintered material containing a first compound formed of Ti, Al, Si, O, and N is provided.

A dielectric thin film has a main component including an oxynitride having excellent dielectric property, and a capacitance element includes the dielectric thin film. The dielectric thin film has a main component made of an oxynitride expressed by a compositional formula of A.sub.aB.sub.bO.sub.oN.sub.n (a+b+o+n=5), wherein A is one or more selected from Sr, Ba, Ca, La, Ce, Pr, Nd, and Na, B is one or more selected from Ta, Nb, Ti, and W, and crystalline particles constituting the dielectric thin film are polycrystalline which are not oriented to a particular crystal plane orientation, and further the crystalline particles have columnar shape crystals.