A composite material containing lithium silicate and a method comprising a quenching step.

Abstract

To provide a method for obtaining a composite having improved material properties.SOLUTION: The present invention is based on a composite having a solid phase structure 10a, a silicate, a lithium ion and at least one paramagnetic or diamagnetic element different from lithium, silicon and oxygen, the solid phase structure having two regions 20 forming the same crystal orientation. In order to obtain improved material properties, the regions are arranged at a distance of at least one millimeter 30 from each other. In another aspect, the present invention is based on a method having a quenching step for producing a solid phase structure of a composite, differing from an ambient temperature solid phase structure, the composite having a silicate, lithium ions and elements different from lithium, silicon and oxygen. In order to provide improved material properties, it is proposed that at least one gram of a phase-pure composite be produced in the quenching step.SELECTED DRAWING: Figure 2

Claims

[Claim 1] A method for producing a composite material (60), A heating process performed on a solid material containing lithium silicate, iron, and optionally manganese, in an oxygen-free atmosphere, to transform the solid material into a homogeneous solid-phase structure (10b) containing lithium silicate, iron, and optionally manganese. The heating process includes a quenching step performed on the heated solid material to produce a composite material (60) having a homogeneous solid phase structure (10b) and being phase-pure, A method characterized in that the final temperature of the heating process is the starting temperature of the quenching step, at least 1 gram of phase-pure composite material (60) is produced in the quenching step, and the phase-pure composite material (60) does not show heterogeneous phases in X-ray diffraction measurements. [Claim 2] The method according to claim 1, characterized in that the solid phase structure (10b) is formed directly at a temperature below the melting point of the composite material (60). [Claim 3] The method according to any one of claims 1 to 2, characterized in that a Pmnb solid phase structure (10b) is formed in the quenching step. [Claim 4] The method according to any one of claims 1 to 2, characterized in that the quenching step is performed with the assistance of a liquid (70). [Claim 5] The method according to claim 4, characterized in that the composite material (60) is cooled by a liquid (70) in direct contact with the composite material. [Claim 6] The method according to any one of claims 1 to 2, characterized in that during the quenching step, the oxidation of the composite material (60) is reduced or prevented by the oxygen-absorbing product (80). [Claim 7] The method according to any one of claims 1 to 2, characterized in that the composite material (60) is cooled at at least 10 Kelvin / second in the quenching step.

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