A method for manufacturing a part from a first ceramic or from carbon, consolidated by a second ceramic, having a determined geometry, that involves carrying out the following sequence of steps: a) manufacturing a preform made from an organic polymer; b) impregnating the preform made from an organic polymer with a resin that is a precursor of the first ceramic or a resin that is a precursor of carbon; c) crosslinking and/or polymerising, then pyrolysing the resin that is a precursor of the first ceramic or the resin that is a precursor of carbon; to obtain a part made from a first ceramic or from carbon having the same geometry as the part to be manufactured; e) depositing the second ceramic on the part made from a first ceramic or from carbon by means of a chemical vapour deposition or CVD process or a chemical vapour infiltration or CVI process.

A molding composition contains a powder, a wax, an adhesive component, a molding component, and a plasticizer, in which a melt flow rate of the adhesive component at 190° C. is 200 g/10 min or more, and a density of the plasticizer is 1.0 g/cm.sup.3 or less.

A composite composed of one or a plurality of principal strengthening compounds and at least one principal cemented refractory metal that is prepared by combining a suitable binary to senary borides and/or carbides with a unitary to binary principal refractory metal is disclosed. As compared with the conventional sintered cemented carbides, the composite of the disclosure not only possess high hardness and high toughness but also has various ratios of principal components since it is not prepared with equal mole during the process.

Disclosed is an MgO target for sputtering, which can accelerate a film formation rate even when MgO is used as a target for sputtering in the formation of an MgO film. The MgO target for sputtering, which includes MgO and an electroconductive material as main components, and in which the electroconductive material is capable of imparting orientation to a MgO film when the MgO film containing the electroconductive material is formed by a DC sputtering.

A method for producing a cermet composition, including mixing a first predetermined amount of a yttria stabilized zirconia powder with between 2 and 8 weight percent mu-metal powder to define a homogeneous admixture, oxidizing the mu-metal in the admixture, forming the homogeneous admixture into a green body, calcining the green body in a first reducing atmosphere to remove oxygen from the oxidized mu-metal to yield a calcined body, and sintering the calcined body in a second reducing atmosphere to yield a densified body having no more than 0.8% porosity. The densified body has a plurality of mu-metal particles distributed therethrough, a hardness of at least 1450 HV, flexural strength of at least 200 kPSI, and a relative permeability μ/μ.sub.o of at least 850.

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 three-dimensional shaped article production method includes a layer formation step of forming a layer by ejecting a composition containing particles and a solvent in a predetermined pattern using a dispenser, a measurement step of determining the height of the layer, and a bonding step of subjecting a stacked body including a plurality of layers to a bonding treatment for bonding the particles, wherein when n represents an arbitrary integer of 1 or more, by selecting driving waveform data for the dispenser when ejecting the composition from a data group including a plurality of pieces of driving waveform data based on the information of the height of the layer in the n-th position (n-th layer) determined in the measurement step, the ejection amount of the composition per unit area onto the n-th layer in the layer formation step of forming the layer in the (n+1)th position ((n+1)th layer) is adjusted.

A method of making a polycrystalline cubic boron nitride (PCBN), material is provided. The matrix precursor powder comprises an aluminium compound. The method comprises mixing matrix precursor powder comprising particles having an average particle size no greater than 250 nm, with between 30 and 40 volume percent of cubic boron nitride (cBN) particles having an average particle size of at least 4 μm, and then spark plasma sintering the mixed particles. The spark plasma sintering occurs at a pressure of at least 500 MPa, a temperature of no less than 1050° C. and no more than 1500° C. and a time of no less than 1 minute and no more than 3 minutes.

An additive manufacturing method may involve: Providing a first material in powder form and a second material as a consumable electrode; forming the first material into a first layer on a base; placing an end of the second material in close proximity to a portion of the first layer; operating a power supply connected to the base and the second material to provide electrical energy sufficient to initiate a chemical reaction between the first and second materials and form a reaction product; feeding additional amounts of the second material while moving the end of the second material along a desired pattern adjacent the first layer, additional reaction products forming additional portions of the article; providing additional quantities of the first material over the first layer to form a subsequent layer; and operating the power supply to form additional portions of the article in the subsequent layer.

A surface-coated cutting tool according to the present invention includes a tool body and a hard coating layer including a complex carbonitride layer containing a small amount of chlorine and (Ti.sub.(1-x)Zr.sub.xyHf.sub.x(1-y))(N.sub.(1-z)C.sub.z) (0.10≤x≤0.90, 0<y≤1.0, 0.08<z<0.60), a ZrHf and C content ratios in cycles, a cycle distance between a maximum ZrHf content point and an adjacent minimum ZrHf content point and a cycle distance between a maximum C content point and an adjacent minimum C content point are 5 to 100 nm, an average value of content ratio differences Δx and Δz is 0.02 or more, a distance between the maximum ZrHf content point and the maximum C content point is ⅕ or less of the distance between a maximum content point and a minimum content point of adjacent ZrHf components, and a composition fluctuation structure is 10% or more.