Ferriferous augite based metal ceramic and preparation method thereof

[0043] Example 1: A Fe / pyroxene cermet and its preparation method

[0044] (1) Weigh the raw materials according to the chemical composition of the CMSA series of glass-ceramics, in which iron tailings are 55%, blast furnace slag powder 20%, quartz sand 15%, borax 2%, sodium carbonate 3%, and feldspar powder 5%;

[0045] (2) Mixing: do the ingredients as described above, and put them into the mixer for mixing;

[0046] (3) Melting material: Put the uniformly mixed raw materials into a crucible, and melt them in a high temperature resistance furnace at 1450℃ for 2 hours; (4) Preparation of water quenching slag powder: Pour the molten glass quickly into cold water to obtain water The quenched glass particles are then ground in a ball mill to a particle size of 200 meshes to obtain slag-ceramic glass water-quenched slag powder; its composition is shown in Table 2;

[0047] (5) Ingredients: measure 100 parts of water quenched slag powder, Fe 2 O 3 Mix 15 parts of powder and 20 parts of fer

[0054] Embodiment 2: A Fe / pyroxene cermet and its preparation method

[0055] (1) Ingredients: 100 parts of glass-ceramic water quenched slag powder, Fe 2 O 3 15 parts of powder and 25 parts of ferrosilicon alloy powder containing 75% (by weight) Fe are mixed; the chemical composition of the glass-ceramic water quenched slag is shown in Table 2;

[0056] (2) Mixing: Put the mixture into a ball milling tank and mill it for 1 hour at room temperature to make the powder uniformly dispersed;

[0057] (3) Pressing: the dispersed powder is pressed into a blank by a press, the forming pressure is 50MPa, and the pressure is 180MPa for isostatic pressing;

[0058] (4) Sintering: the formed blank is placed in an atmosphere furnace, and nitrogen is introduced at a flow rate of 0.5L / min. The temperature is raised to 800°C at a heating rate of 8°C / min, and the temperature is kept for 3 hours; it is naturally cooled to 200°C and stopped. Nitrogen, continue to cool to room temperature and take ou

[0060] Embodiment 3: A Fe / pyroxene cermet and its preparation method

[0061] (1) Ingredients: measure 100 parts of water quenched slag powder prepared in Example 1, Fe 2 O 3 Mix 10 parts of powder, 30 parts of iron concentrate powder, and 50 parts of ferrosilicon alloy powder containing Fe 65% (weight);

[0062] (2) Mixing: Put the mixture into a ball milling tank and mill it for 2 hours at room temperature to make the powder uniformly dispersed;

[0063] (3) Pressing and sintering: the dispersed powder is placed in a graphite mold, first molded under a pressure of 10MPa, and then placed in a spark plasma sintering furnace (SPS) for sintering, with a heating rate of 35°C / min The temperature is increased to 800°C, and the pressure is gradually increased to 50 MPa at the same time, the temperature is kept for 20 minutes, and the furnace is cooled to room temperature and taken out.

[0064] The density of the sintered sample was measured by the drainage method, and its microhardness wa