Carburizing surface treatment of titanium wire

The formation of stable carbon titanium wire with a high hardness carbide. Growth carbonized layer between titanium and carbon diffusion rate of titanium carbide layer is determined.
The solubility of carbon in titanium is small, at 850X: when a total of 0.3% at 600C and at approximately 0.1% B drops due to the small solubility of carbon in titanium, it is basically only by a layer of titanium carbide and the lower fork domain deposited layer to achieve the purpose of surface hardening. Removal of the oxygen must be carried out under the conditions of carburizing, the hardness of the surface layer as applied to steel used in carburizing carbon monoxide or oxygen-containing powder against the surface of the carbon monoxide formed is 2700MPa and 8500MPa, and the head. It is easy to peel off.
Compared with this, the conditions in the decarburization deoxidation or at the charcoal may form a thin layer of titanium carbide carburizing. This layer has a hardness of 32OUOMPa, conforming to the hardness of the titanium carbide. Carburized layer is substantially greater than the depth of the nitrided layer under the same conditions when the nitriding depth with nitrogen. In the oxygen-rich conditions must take into account the influence of oxygen absorption hardening depth. Only under conditions of very thin thickness, in a vacuum or an argon - methane atmosphere, it may penetrate the toner to form a sufficient adhesive strength as compared with this, using a gas carburizing agent may form hard and particularly good adhesion titanium carbide hardened layer. While the 950T: and 10201: temperature between the conditions for the formation of hardened exhibition in 50fim between and. With increasing thickness of the titanium carbide layer becomes more brittle and tend to peel off t To avoid decomposition leaving Rui alkoxy carbon inclusions invasion titanium carbide layer, should be approximately 2% of the volume fraction of the predetermined alkoxy Rui dose of additive gas carburizing in an inert gas. When using propane additives and the use of methane carburizing when he formed the lower surface hardness. When the adhesive force reaches Wu Mao OkPa conditions when using propane gas carburizing, although the measured thickness of the hardened layer is very thin, but it has the best wear resistance. Absorption of hydrogen in the gas type conditions using carburizing agent, but yet had to remove it when the vacuum annealing.