A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses high-tenacity silicon carbide ceramic and a preparation method thereof. The high-tenacity silicon carbide ceramic is characterized by being prepared from the following raw materials in parts by weight: 70-80 parts of silicon carbide, 8-13 parts of stainless steel powder, 2-4 parts of titanium powder, 4-8 parts of nano-zirconia, 1-3 parts of polyvinyl alcohol, 3-6 parts of beryllium powder, 1-2 parts of ammonium polyphosphate, 1-2 parts of a silane coupling agent KH-580, 3-4 parts of graphite, 2-3 parts of sodium lignin sulfonate, 2-3 parts of a sintering aid and 80-100 parts of deionized water. By adding stainless steel powder, the sintering density of the high-tenacity silicon carbide ceramic is improved, the sintering temperature is decreased, and resources are saved; by adding nano-zirconia and metal powder, the shape and the grain boundary characteristics of the ceramic are improved, and breaking energy is consumed, so that the tenacity of the ceramic is improved.
The invention discloses high-tenacity silicon carbide ceramic and a preparation method thereof. The high-tenacity silicon carbide ceramic is characterized by being prepared from the following raw materials in parts by weight: 70-80 parts of silicon carbide, 8-13 parts of stainless steel powder, 2-4 parts of titanium powder, 4-8 parts of nano-zirconia, 1-3 parts of polyvinyl alcohol, 3-6 parts of beryllium powder, 1-2 parts of ammonium polyphosphate, 1-2 parts of a silane coupling agent KH-580, 3-4 parts of graphite, 2-3 parts of sodium lignin sulfonate, 2-3 parts of a sintering aid and 80-100 parts of deionized water. By adding stainless steel powder, the sintering density of the high-tenacity silicon carbide ceramic is improved, the sintering temperature is decreased, and resources are saved; by adding nano-zirconia and metal powder, the shape and the grain boundary characteristics of the ceramic are improved, and breaking energy is consumed, so that the tenacity of the ceramic is improved.
| European Patent Office | 2023
High-strength silicon carbide ceramic and preparation method thereof
| European Patent Office | 2024