A multi-channel honeycomb array crucible with gradient temperature field

Abstract

The invention belongs to the technical field of high-flux sintering and melting preparation of small-sized samples, relates to a microwave high-flux micro-manufacturing device and in particular relates to a multi-channel honeycomb array crucible with a gradient temperature field. Wave absorption materials with different components are prepared into a series of small-sized crucibles by utilizing aproperty of heating the inner part of a powder material through microwaves and a property of rapidly raising the temperature of the wave absorption materials to constant temperature under the action of the microwaves; under the action of the same microwave energy field, each crucible can be heated to different temperatures and auxiliary outer heating is carried out on the powder material, so thatthe high-flux sintering and melting preparation of the powder material in the crucible under the gradient temperature field is realized in one step; the problems of an existing material preparation method that the combination of the components is single when the material is prepared, the external heating efficiency is low, the control temperature in a material preparation process is unique, the utilization amount of the raw materials is great, the cost is high and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of high-throughput sintering and melting preparation of small-sized samples, and relates to a microwave-based high-throughput micro-manufacturing device, in particular to a gradient temperature field multi-channel honeycomb array crucible. Background technique [0002] The traditional new material research and development method can be summarized as a "trial and error method". It first predicts or selects the composition ratio of the target material based on existing theories or experiences, and then prepares and processes it in small batches (general metal materials require Tens of kilograms), and then adjust and optimize the composition according to the characterization results of the prepared samples, and then prepare and characterize again, and after many cycles, finally obtain the materials that meet the requirements. This one-time experiment, the trial-and-error method of discrete sample preparation fo...

AI Technical Summary

Problems solved by technology

This one-time experiment, the trial-and-error method of discrete sample preparation for preparing a sample is inefficient, and the research and development costs are expensive. According to statistics, the global new material research and development time takes an average of 5-12 years, which has become a bottleneck for the development of modern new materials (Introduction to the Materials Genome Project, Nature, 2014, 36(2): 89-104)

[0003] Existing material preparation methods (especially bulk material preparation technology) generally prepare samples of one component each time for a certain material system. The preparation efficiency is low and the preparation cost is high. The main reasons are the following four A major technical flaw:

[0004] 1. The composition of the preparation material is single

The composition of the material plays a leading role in its performance. Taking the smelting and preparation method of metal materials as an example, the existing method can only select one composition combination method for batching and smelting at a time, which greatly reduces the conditions for determining the optimal composition ratio. s efficiency

[0005] 2. Inefficiency of external heating during material preparation

The control of temperature conditions is a key factor in material preparation. If the temperature is too low, various components cannot be completely melted, and phenomena such as uneven components, agglomeration, inclusions, and defects will occur. If the temperature is too high, it will be difficult to remove impurities and increase the energy. The existing method can only select one temperature for one preparation, which greatly reduces the efficiency of selecting the optimal preparation temperature condition

[0007] Fourth, the large amount of raw materials used to prepare monomer samples leads to high costs

However, the method of using microwaves to simultaneously heat the inside and outside of the powder material, and to generate a gradient temperature field through the action of microwaves and perform high-throughput micro-manufacturing has not been reported so far.

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