Laboratory-oriented rapid gas infiltration process and equipment thereof

Abstract

The invention provides a laboratory-oriented rapid gas infiltration process and equipment thereof, which are designed for solving the technical problems that the gas infiltration temperature of samples is difficult to master, the gas infiltration time is overlong, the construction cost is high and severe surface oxidation phenomena exist, which are caused by severe backwardness of the process and the equipment adopted by a laboratory during gas infiltration into metal surfaces or solid-gas reaction in metal material preparation in the prior art. The solution adopted by the invention is that through thermogravimetry-thermal scanning, a temperature Ts corresponding to the maximum gas infiltration rate is accurately determined within a temperature range of 293 to 1473K; vacuum annealing is conducted for 30 minutes at a temperature value lower than Ts in the laboratory-oriented rapid gas infiltration process and the equipment adopted by the process, so as to remove impurity gas adsorbed on material surfaces; and after a circular furnace tube is flushed for at least three times by using infiltrated gas, gas infiltration or the solid-gas reaction is conducted at the best temperature value Ts, and the samples are obtained in a short time. By adopting the process and the equipment, the time need for the infiltration of certain gas (or the solid-gas reaction) can be greatly reduced, the operation steps of a gas infiltration (or solid-gas reaction) experiment can be simplified, the production environment can be improved, and the energy consumption and the cost can be reduced.

Description

technical field [0001] The invention relates to a process and its equipment, in particular to a simple and rapid gas infiltration or solid-gas reaction process and equipment for a laboratory. The process and its equipment are mainly used in laboratories. Infiltration of gas or solid-gas reaction on the metal surface belongs to the field of heat treatment in the machinery industry. Background technique [0002] The nitriding and hydrogen permeating processes in the laboratory are widely used in material modification, material preparation and research and production of functional materials. At present, in the field of heat treatment in the machinery industry, nitriding and hydrogen permeating (or solid-gas reaction) are widely used, but their equipment is outdated, and most of them use experience to operate. The gas infiltration (or solid-gas reaction) equipment in the laboratory is seriously outdated, and most of the sample preparation takes a very long time (some days or w...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the serious outdated technology and equipment used in the current laboratory for infiltrating gas on the metal surface or solid-gas reaction in the preparation of metal materials, which makes it difficult to grasp the gas infiltration temperature of the sample, the gas infiltration time is too long, the cost is high and there are serious problems. Technical problems of surface oxidation phenomenon, providing a laboratory-oriented rapid gas infiltration process and its equipment

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