Sintered preparation method of iron-based metal ceramic material with high TiC content
A technology for iron-based metal and ceramic materials, applied in the field of preparation of iron-based metal-ceramic materials, can solve the problems that the material properties are difficult to meet the application requirements, the sintered porosity is difficult to reduce, the high temperature strength and hardness are insufficient, etc. Wettability, effect of high TiC content
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Embodiment 1
[0008] Embodiment 1: the formula of iron-based cermet: 50wt% 400 mesh TiC powder, Fe powder is 39wt%, Mo powder is 1wt%, Ni powder is 4wt%, Cr powder is 5wt%, Si powder is 1wt%, above The particle size of the metal powder is 200 mesh. After the prepared powder is mixed evenly, it is first pressed into a blank of 10 x 10 x 2 cm; then the blank is placed in a vacuum furnace; then, vacuum is drawn; then the temperature is raised to 200°C at a rate of 10°C / min; 10 minutes; then increase the temperature to 400°C at a rate of 10°C / min, and keep it for 10 minutes; then increase the temperature at a rate of 10°C / min, keep it at 200°C for 10 minutes, until the sintering temperature is 1450°C, after sintering for 4 hours , with the furnace cooling to room temperature, a fully dense cermet can be obtained. The hardness of cermet reaches HRC67, the three-point bending strength reaches 1000MPa, the elastic modulus is 250GPa, and the density is about 5.67g / cm 3 , the fracture toughness is...
Embodiment 2
[0009] Embodiment 2: The formula of iron-based cermet: 400 mesh TiC powder and TiN powder are 50wt% and 5wt% respectively, 201 stainless steel powder is 40wt%, Mo powder is 2wt%, Ni powder is 2wt%, Ti powder is 1wt% . The particle size of the above metal powders are all 200 mesh. After the prepared powder is mixed evenly, it is first pressed into a blank of 10 x 10 x 2 cm; then the blank is placed in a vacuum furnace; then, vacuum is drawn; then the temperature is raised to 200°C at a rate of 10°C / min; 10 minutes; then increase the temperature to 400°C at a rate of 10°C / min, and keep it for 10 minutes; then increase the temperature at a rate of 10°C / min, keep it at 200°C for 10 minutes, until the sintering temperature is 1450°C, after sintering for 4 hours , with the furnace cooling to room temperature, a fully dense cermet can be obtained. The hardness of cermet reaches HRC69, the three-point bending strength reaches 900MPa, the elastic modulus is 270GPa, and the density is...
Embodiment 3
[0010] Embodiment 3: The formula of iron-based cermet: 400 mesh TiC powder and TiN powder are 70wt% and 5wt% respectively, Fe powder is 17wt%, Mo powder is 1.25wt%, Ni powder is 2wt%, Cr powder is 3.75wt% %, Ti powder is 1wt%. The particle size of the above metal powders are all 200 mesh. After the prepared powder is mixed evenly, it is first pressed into a blank of 10 x 10 x 2 cm; then the blank is placed in a vacuum furnace to evacuate; then the temperature is raised to 200°C at a rate of 10°C / min; heat preservation for 10 minutes; Then increase the temperature to 400°C at a rate of 10°C / min, and keep it warm for 10 minutes; in this way, increase the temperature at a rate of 10°C / min, and keep it at 200°C for 10 minutes until the sintering temperature is 1450°C. After sintering for 4 hours, the furnace After cooling to room temperature, a fully dense cermet can be obtained. The hardness of cermet reaches HRC74, the three-point bending strength reaches 900MPa, the elastic m...
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