Preparation method of zero expanding material with multiferroic and high mechanical properties

Abstract

The invention takes analytically pure PbO, Bi2O3, NiO and TiO2 as raw materials, solid phase method is adopted to synthesize (1-x)PbTiO3-xBi(Ni1 / 2Ti1 / 2)O3, x is more than or equal to 0.0 and less than or equal to 0.6, PbO, Bi2O3, NiO and TiO2 are calculated and weighed by target x value, the weighed samples are subject to ball milling for 24 hours in ethanol solution, thus the samples are mixed fully, the dried powder is subject to heat preservation at 800-900 DEG C for 3-5 hours, is pressed into pieces after being subject to temperature reduction and cooling and then is subject to heat preservation at 1100-1200 DEG C for 3-12 hours, and cooling is carried out, thus obtaining zero expanding material (1-x)PbTiO3-xBi(Ni1 / 2Ti1 / 2)O3 with multiferric high mechanical properties. The material has zero expanding characteristic at the temperature range of 25-525 DEG C, ferroelectric property, ferromagnetism and high mechanical properties; and preparation technology is simple, and equipment requirement is lower.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, in particular to a preparation method of a zero-expansion material with multiferroicity and high mechanical properties. Background technique [0002] Multiferroic materials refer to materials that have multiple orderly coexistences such as ferroelectricity and ferromagnetism at the same time. , has some new physical effects, which greatly broadens the application range of ferroic materials [1-3]. [0003] Zero-expansion materials have high research and practical application value, and the volume of such materials does not change or changes very slightly as the temperature changes. Because the volume of zero-expansion materials is less affected by temperature and has significant thermal shock resistance, this type of materials has broad application prospects from daily necessities to aerospace [4-6]. [0004] At present, multiferroic materials have become a research hotspot in var...

AI Technical Summary

Problems solved by technology

However, most of the known multiferroic materials are often difficult to have good thermal stability and mechanical properties, which limits their applications.

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