Titanium diboride can be prepared by a variety of methods, including but not limited to direct synthesis, boron thermal method, molten electrolysis, assisted immersion metal method, carbon thermal method, self-propagating high temperature synthesis (SHS), vapor deposition method and sol-gel method. The specific introduction is as follows: 12
Direct synthesis method: titanium powder and high-purity boron powder are directly combined at high temperature to form titanium diboride. This method is expensive and usually only used in laboratories.
Borothermal method: titanium oxide and boron powder are reacted at a higher temperature to form titanium diboride. This method has a lower reaction temperature, but the raw material purity and ratio requirements are higher.
Melting electrolysis method: titanium oxide is reacted with alkali (or alkaline earth) metal borates and fluorides under the conditions of molten electrolysis to form titanium diboride.
Carbothermal method: Using carbothermal reduction method, carbon is used as a reducing agent to react with titanium oxide at high temperature to form titanium diboride. This is a method that is widely used in industrial production.
Self-propagating high-temperature synthesis (SHS): This method uses magnesium powder as a reducing agent, initiates the reaction through an igniter, and uses the heat released by the reaction to complete the synthesis. The titanium diboride produced by this method has small and uniform particle size, but there are technical difficulties.
Vapor deposition method and sol-gel method: These two methods use the gas phase and sol state as the starting state, respectively, to prepare titanium diboride through chemical reactions and gelation processes. These two methods are generally suitable for laboratory-scale preparation.
These methods have their own advantages and disadvantages. Which method to choose depends on the required product purity, production cost, and specific requirements for product particle size and morphology.