Graphite heaters use the thermal conductivity and electrical resistance of graphite to heat. Graphite is a material with good thermal conductivity and electrical resistance, and when energized, graphite generates heat and transfers it to the heated object.
The working principle of a graphite heater is as follows:
The graphite heater consists of a graphite rod, a power supply, a shielding gas and a control system.
The sample is injected into a graphite rod with an injector.
The heating power supply is energized, and an electric current is passed through the graphite rod, generating heat.
The heat is transferred to the sample through the thermal conductivity of the graphite rod.
The temperature of the sample is increased to achieve the purpose of atomization.
Graphite heaters have the following advantages:
The heating rate is fast, and the sample can be heated to high temperatures in a short time.
Homogeneous heating ensures uniform atomization of the sample.
It has strong corrosion resistance and can be used in high temperature and high pressure environments.
Graphite heaters are widely used in metallurgy, chemistry, analysis and other fields. For example, in the metallurgical industry, graphite heaters can be used to heat metal materials, melting or plasticizing them; In the chemical industry, graphite heaters can be used to heat chemical reactants and promote reactions; In the field of analysis, graphite heaters can be used in analytical instruments such as atomic absorption spectrometers and atomic emission spectrometers to analyze the content of elements in a sample.