Probe material for ultrasonic metallurgy and preparation method thereof

Abstract

The invention provides a probe material for ultrasonic metallurgy. The probe material is rich in dysprosium and yttrium metals, and further comprises silicon, nitrogen and oxygen, the content of dysprosium is 20-50%, and the content of yttrium is 10-30%. The invention also provides a preparation method of the probe material for ultrasonic metallurgy, which comprises the following steps: weighing 20-50 parts of dysprosium oxide, 10-50 parts of silicon nitride, 5-20 parts of yttrium oxide, 5-30 parts of boron nitride, 0.5-5 parts of boron carbide, 0.1-3 parts of aluminum nitride, 0.5-2 parts of calcium oxide and 0.5-1 part of silicon oxide, conducting mixing, uniformly conducting stirring, and conducting sieving to obtain a sieved mixture I; subjecting the mixture I to ball milling to obtian a mixture II after ball milling; sequentially sieving the mixture II through a 500-mesh sieve, a 300-mesh sieve and a 200-mesh sieve in a grading manner, then separately taking 2 parts of the 500-mesh mixture, 2 parts of the 300-mesh mixture and 1 part of the 200-mesh mixture, then adding polyethylene glycol, ammonium polyacrylate and water, uniformly conducting mixing, performing spray granulation, and then conducting sieving through a 200-mesh sieve to obtain sieved powder; and loading the powder into a mold, conducting pressurized controlled-temperature forming to form a green body, and conducting sintering and forming to obtain the probe material for ultrasonic metallurgy.

Description

technical field [0001] The invention belongs to the field of ultrasonic metallurgy, and in particular relates to a probe material for ultrasonic metallurgy and a preparation method thereof. Background technique [0002] As an effective means of controlling the solidification process of metals, ultrasound has been valued by the metallurgical industry. A large number of studies have found that the introduction of ultrasonic energy in the liquid metal and its solidification process can significantly refine the solidification structure and degassing, and does not "pollution" the molten metal. The body has the characteristics of simple process and low cost. This makes the process of grain refinement by applying ultrasound to control the solidification process of metal melts more attractive and promising. However, the material of the ultrasonic probe greatly affects the implementation of ultrasonic metallurgy. The typical deficiency is that the stability of the ultrasonic output ...

AI Technical Summary

Problems solved by technology

However, the material of the ultrasonic probe greatly affects the implementation of ultrasonic metallurgy. The typical deficiency is that the stability of the ultrasonic output of the probe in the metal melt becomes poor, and the output power decreases rapidly, resulting in poor ultrasonic treatment effect, especially the commonly used titanium alloys. Ultrasonic probes made of materials such as steel and steel are prone to react with metal melts during the ultrasonic process, resulting in loss of the probe, that is, poor high temperature resistance, resulting in extremely reduced ultrasonic output power, or even failure.

Although common ceramic materials have excellent high temperature resistance, they have a high tendency to resist thermal cracking and low density. Under the action of cyclic stress loaded in the ultrasonic process, they are easy to crack and cause the probe to fail. It is difficult to be used as a probe material in the ultrasonic metallurgy industry.