PRODUCT CATEGORIES

Vacuum Heat Treatment Furnace

Vacuum Sintering Furnace

Vacuum Brazing Furnace

Titanium Alloy Ion Nitriding

At room temperature, titanium alloys have three matrix structures, and titanium alloys are divided into the following three categories: α alloys, (α+β) alloys and β alloys. China is represented by TA, TC, and TB respectively.

Alpha titanium alloy: stable structure, higher wear resistance than pure titanium, and strong oxidation resistance. At a temperature of 500°C to 600°C, it still maintains its strength and creep resistance, but cannot be strengthened by conventional heat treatment, and its room temperature strength is not high.

Beta titanium alloy: It has higher strength without heat treatment. After quenching and aging, the alloy is further strengthened, and the room temperature strength can reach 1372 to 1666 MPa; but the thermal stability is poor, and it is not suitable for use at high temperatures.

α+β titanium alloy: It is a dual-phase alloy with good comprehensive properties and good structural stability.

Although titanium alloy is a metal material with valuable comprehensive properties, it has low hardness and poor wear resistance, which greatly limits its application range. Ion nitriding can greatly improve the surface hardness, wear resistance (more than 30 times of wear resistance) and scratch resistance of titanium alloys, and it also maintains the good toughness and plasticity of titanium.

After ion nitriding, the titanium alloy also overcomes the shortcomings of titanium’s inability to resist corrosion in reducing media (such as hydrochloric acid, dilute sulfuric acid, etc.). In 33% hydrochloric acid, the corrosion performance is improved dozens of times; in 20% hydrochloric acid and 20% % In sulfuric acid, the corrosion resistance is improved hundreds of times.

Titanium alloy ion nitriding process has high requirements for ion nitriding equipment. In addition to the characteristics of conventional ion nitriding equipment, it also needs to be equipped with a multi-channel atmosphere and a stable high-power pulse power supply. The furnace body needs to have excellent cooling performance and High temperature resistance performance.

The process usually uses a nitriding atmosphere that does not contain hydrogen, such as pure nitrogen or a mixture of nitrogen and argon, because hydrogen embrittlement is an important problem for titanium alloys.