Drilling tools, such as drill bits, having a shank, a crown, and a plurality of abrasive cutting elements. In the case of impregnated drilling tools, the abrasive cutting elements are dispersed throughout at least a portion of the crown. In the case of surface-set drilling tools, the abrasive cutting media is secured to and projects from a cutting face of the crown. The matrix of the crown of the drilling tools includes a carbide-forming alloy that forms a direct carbide bond with at least one cutting element of the plurality of abrasive cutting elements.

A composite material having a grainy appearance, this composite material including a metal matrix which represents, in terms of volume fraction, between 50 and 95% of the grainy composite material, the ceramic particles having a diameter that lies in the range 0.1 to 2 mm and which represent, in terms of volume fraction, between 50 and 5% of the composite material are dispersed in the metal matrix and form the remainder of this grainy composite material. A method for manufacturing a grainy synthetic material.

A neuro-bionic device based on a two-dimensional Ti.sub.3C.sub.2 material is provided. The device includes a Pt/Ti/SiO.sub.2/Si substrate, a neuro-bionic layer formed on a Pt film layer of the Pt/Ti/SiO.sub.2/Si substrate, and an Al electrode layer formed on the neuro-bionic layer. The neuro-bionic layer is made of a two-dimensional Ti.sub.3C.sub.2 material. The neuro-bionic device of the present invention is prepared by an evaporating coating method and a drop-coating method. The preparation process is relatively simple. The prepared device can successfully simulate the characteristics of synapse. More importantly, the resistance of the device can be modulated continuously under a scanning of a pulse sequence with pulse width and interval of 10 ns, which is beneficial to the application of the device in the ultrafast synapse simulation.

A process of forming a Si-containing ceramic comprises forming a Si-based polymeric composition. The process includes neutralizing a charge of said Si-based polymeric composition. The process includes adding thermal energy under a controlled atmosphere to the Si-based polymeric composition. A turbine engine component comprises an airfoil and the airfoil comprises a Ceramic Matrix Composite (CMC) material.

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 mixer for ceramic feedstock pellets includes a tank, a mixing device within the tank, and a heat exchanger including a cooler for cooling of the content of this tank. A controller controls the heat exchanger which includes a heater arranged to heat the content of this tank to a temperature comprised between a lower temperature (TINF) and a higher temperature (TSUP) stored in a memory for a specific mixture. The heater exchanges energy with a heat exchanger and mixing temperature maintenance circuit, external to this tank. The thermal inertia of this circuit is higher than that of this fully loaded tank.

A method for producing an annular combustion chamber of a turbojet using CMC. For this, a shaping tool with movable slides is used and said chamber is produced around the tool, thereby producing a fibrous preform of which the shape is consolidated by drape moulding on the tool and pyrolysis, which is then densified by CVI. Several slides have back drafts, at least one other of such slides having a draft or neither a draft nor a back draft. Then, the slides are removed in a predetermined order imposed by the back drafts and the relative positions of the slides.

An object shaping method includes a step of forming a powder layer using first powder, a step of placing second powder having an average particle diameter smaller than an average particle diameter of the first powder at a part of a region of the powder layer, and a first heating step of heating the powder layer in which the second powder is placed. The average particle diameter is equal to or larger than 1 nm and equal to or smaller than 500 nm, and the first heating step performs heating the powder layer at a temperature at which particles contained in the second powder are sintered or melted.

An additive manufacturing method may involve: Providing a first and a second material, the second material capable of reacting with the first material to form a reaction product; forming at least the first material into a first layer; subjecting at least a portion of the first layer to energy in the presence of the second material, the energy being sufficient to initiate a reaction between at least the first and second materials to form a portion of the article, the portion of the article comprising the reaction product; forming a second layer of at least the first material on the first layer; and subjecting at least a portion of the second layer to energy in the presence of the second material, the energy being sufficient to initiate a reaction between the first and second materials to form an additional portion of the article.

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.