A titanium nitride coated ti 2 o 3 compound al 2 o 3 Materials and their preparation methods
A titanium nitride and coating technology is applied in the titanium nitride-coated Ti2O3 composite Al2O3 material and its preparation, and in the field of preparation of titanium nitride-coated materials, which can solve the problems of high synthetic economic cost and high price, and achieve nitrogen The chemical method is simple and easy to implement, has a wide range of applications, and has the effect of high density.
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Embodiment 1
[0027] Embodiment 1: to containing Fe 2 o 3 Titanium concentrate with a mass percentage of 10% is smelted to obtain ferro-titanium alloy, and slag is obtained after liquid-solid separation; the slag is electrofused in an electric furnace at a temperature of 2300°C to obtain Ti 2 o 3 -Al 2 o 3 Department of raw materials. The raw materials were crushed into 3-5mm particles, placed in a corundum crucible, and nitrided by flowing nitrogen in a tube furnace. The nitriding temperature was 1400°C, the heating rate was 5°C / min, the temperature was kept for 3h, and the nitrogen flow rate was 40ml / min. A golden-yellow titanium nitride-coated Ti 2 o 3 Composite Al 2 o 3 Material.
[0028] The material consists of Al 2 o 3 ,TiO 2 , MgO, Fe 2 o 3 , CaO, SiO 2 , Na 2 Composition of O, of which: Al 2 o 3 The content is 80.03%; TiO 2 The content of MgO is 15.20%; the content of MgO is 1.36%; Fe 2 o 3 The content of CaO is 1.52%; the content of CaO is 0.51%; SiO 2 The co...
Embodiment 2
[0029] Embodiment 2: the difference between production technology and embodiment 1 is:
[0030] Ti 2 o 3 -Al 2 o 3 The raw materials are crushed into small particles of 0-1mm, and the nitriding temperature is 1300°C.
[0031] The material consists of Al 2 o 3 ,TiO 2 , MgO, Fe 2 o 3 , CaO, SiO 2 , Na2 Composition of O, of which: Al 2 o 3 The content is 84.27%; TiO 2 The content of Fe is 11.31%; Fe 2 o 3 The content of MgO is 1.06%; the content of MgO is 1.45%; the content of CaO is 0.89%; SiO 2 The content is 0.43%; Na 2 The content of O is 0.21%. The bulk density is 4.1g / cm 3 .
Embodiment 3
[0032] Embodiment 3: the difference between production technology and embodiment 1 is:
[0033] For Fe 2 o 3 The rutile concentrate with a mass percentage of 10% is smelted to obtain ferro-titanium alloy, slag is obtained after liquid-solid separation, and slag slices are nitrided.
[0034] The material consists of Al 2 o 3 ,TiO 2 , MgO, Fe 2 o 3 , CaO, SiO 2 , Na 2 Composition of O, of which: Al 2 o 3 The content is 75.62%; TiO 2 The content of MgO is 19.30%; the content of MgO is 0.99%; Fe 2 o 3 The content of CaO is 2.42%; the content of CaO is 0.48%; SiO 2 The content is 0.31%; Na 2 The content of O is 0.34%. The bulk density is 3.8g / cm 3 .
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