Provided is a powder material for producing a three-dimensional object including: a base material; a resin; and resin particles, wherein an amount W (mass %) of carbon remaining in the powder material after heating in a vacuum of 10.sup.2 Pa or lower at 450 degrees C. for 2 hours satisfies the following formula: W (mass %)<0.9/M, where M represents the specific gravity of the base material.

A positive electrode composition for a rechargeable battery, the composition comprising a first and a second powderous lithium metal oxide, the first lithium metal oxide comprising either one or more of Ni, Mn and Co, the second lithium metal oxide powder having either: the formula Li.sub.xWM.sub.yO.sub.z, M being a metal having a valence state of +2 or +3, with 0<y1, 3x4, 5z6, whereby x=(2*z)[y*(valence state of M)](valence state of W).

This disclosure relates to a polycrystalline diamond (PCD) body comprising a PCD material formed of intergrown diamond grains forming a diamond network, and an iron-containing binder.

A ferroelectric polymer electrocaloric nanowire array and a preparation method thereof, in which the ferroelectric polymer electrocaloric material is formed by a polyvinylidene fluoride (PVDF)-based ferroelectric polymer electrocaloric nanowire array embedded in a porous anodic aluminum oxide (AAO) template. The PVDF-based ferroelectric polymer electrocaloric material is controlled to form a nanowire array embedded in the porous AAO template, and through adopting of a solution infiltration method to prepare the ferroelectric polymer electrocaloric nanowire array in the porous AAO template and improvement of the key morphology, structure, internal microscopic connection construction of the ferroelectric polymer, problems, such as low electrocaloric strength of the ferroelectric polymer, difficult heat conduction in the electrocaloric material and low refrigerating power density of the electrocaloric device in the prior art, can be effectively solved.

A bone substitute material is disclosed consisting of a zirconium dioxide ceramic having preferably an open porosity. The bone substitute material can be used in particle form or in block form.

The invention relates to a method for preparing a composite metal oxide hollow fibre. A certain stoichiometry of composite metal oxide raw material and a polymer binding agent are added to an organic solvent, and mixed mechanically to obtain an evenly dispersed spinning solution having a suitable viscosity. After defoaming treatment, the spinning solution is extruded through a spinneret and, after undergoing a certain dry spinning process, enters an external coagulation bath; during this period, a phase inversion process occurs and composite metal oxide hollow fibre blanks are formed. The blanks are immersed in the external coagulation bath and the organic solvent is displaced; after natural drying, the blanks undergo a heat treatment process; during this period, polymer burn off, in situ reaction, and in situ sintering processes occur to obtain the composite metal oxide hollow fibre.

An infrared ray radiated from a region of a surface of an object to which a coating film (20) of a coating material is provided is detected by an infrared sensor (42). The coating film (20) includes a porous ceramic particle (22) and a binder (24), and the ceramic particle (22) includes a compound represented by a compositional formula of any of A.sub.aR.sub.bAl.sub.cO.sub.4, A.sub.aR.sub.bGa.sub.cO.sub.4, R.sub.x, Al.sub.yO.sub.12, and R.sub.xGa.sub.yO.sub.12. Here, A is one or more elements selected from a group consisting of Ca, Sr, and Ba, and R is one or more elements selected from a group consisting of rare earth elements. Also, a is equal to or greater than 0.9 and equal to or less than 1.1, b is equal to or greater than 0.9 and equal to or less than 1.1, c is equal to or greater than 0.9 and equal to or less than 1.1, x is equal to or greater than 2.9 and equal to or less than 3.1, and y is equal to or greater than 4.9 and equal to or less than 5.1. A porosity of the ceramic particle (22) is equal to or greater than 20% and equal to or less than 40%.

A high-temperature resistant lightweight thermal insulation material having a dual-pore structure and a preparation method thereof, wherein the material is prepared by adding a molding promoter and a pore former into raw materials including alumina, silica and aluminosilicate powders, stirring the resulting mixture evenly and extrusion molding the same, followed by sintering, whereby the high-temperature resistant lightweight thermal insulation material having a dual-pore structure comprising macroscopic through-pores and micro-pores is obtained, and wherein the ratio of the total volume of the through-pores to the total volume of the micro-pores is 0.5 to 25:1.

Provided is a method for forming a ceramic article, including disposing a slurry in a mold, wherein the slurry includes a ceramic powder and a photoctivable pre-polymer; and forming a green ceramic article wherein forming includes exposing the slurry to radiant energy, such as ultraviolet radiation, wherein the radiant energy catalyzes polymerization of the prepolymer. In another aspect, provided is method for forming an article, including disposing a slurry in a mold, wherein the slurry includes a photoactivable pre-polymer and a powder and the powder includes a ceramic powder, a metal powder, or both; and exposing the slurry to ultraviolet radiation wherein the ultraviolet radiation catalyzes polymerization of the pre-polymer.

A ferroelectric polymer electrocaloric nanowire array and a preparation method thereof, in which the ferroelectric polymer electrocaloric material is formed by a polyvinylidene fluoride (PVDF)-based ferroelectric polymer electrocaloric nanowire array embedded in a porous anodic alumimum oxide (AAO) template. The PVDF-based ferroelectric polymer electrocaloric material is controlled to form a nanowire array embedded in the porous AAO template, and through adopting of a solution infiltration method to prepare the ferroelectric polymer electrocaloric nanowire array in the porous AAO template and improvement of the key morphology, structure, internal microscopic connection construction of the ferroelectric polymer, problems, such as low electrocaloric strength of the ferroelectric polymer, difficult heat conduction in the electrocaloric material and low refrigerating power density of the electrocaloric device in the prior art, can be effectively solved.