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Method for synthesizing carbon-nitrogen-tungsten-titanium solid solution and preparing toughened titanium carbonitride metal ceramic through molten salt method
The invention provides a method for synthesizing a carbon-nitrogen-tungsten-titanium solid solution and preparing toughened titanium carbonitride metal ceramic through a molten salt method, and relates to the field of metal ceramic material preparation.The method includes the steps that mixed molten salt of NaCl and Na2CO3 is adopted for calcining raw material powder composed of TiO2, WO3 and carbon black for 1 h at the temperature of 1350 DEG C in the nitrogen atmosphere, the titanium-tungsten-carbon solid solution is synthesized, the hardness of the prepared metal ceramic material is 10.7-17.1 GPa, and the toughness of the metal ceramic material is improved. The fracture toughness is 5.8 MPa.m < 1/2 > to 14.25 MPa.m < 1/2 >, and the bending strength is 600 MPa to 1800 MPa. The novel preparation method of the titanium-tungsten-carbon solid solution is applied to the field of metal ceramic, the different solid solutions are added into titanium carbonitride metal ceramic, the titanium carbonitride metal ceramic is toughened, and the performance of the titanium carbonitride metal ceramic is improved. In the research, several different samples are compared, it is found that too many titanium-tungsten-carbon solid solutions and too few titanium-tungsten-carbon solid solutions are not beneficial to improvement of the fracture toughness, and we find that the titanium-tungsten-carbon solid solutions are most appropriate when the mass ratio is 34%.
本发明提供一种熔盐法合成碳氮钨钛固溶体及制备增韧碳氮化钛金属陶瓷的方法，涉及金属陶瓷材料制备领域，本发明采用NaCl与Na2CO3混合熔盐在1350℃下，氮气气氛1h煅烧TiO2、WO3、碳黑组成的原料粉体，合成了钛钨碳固溶体，制备出的金属陶瓷材料硬度为10.7～17.1GPa，断裂韧性为5.8～14.25MPa·m1/2，抗弯强度为600‑1800MPa。本发明应用于金属陶瓷领域，将这几种不同的固溶体加入碳氮化钛金属陶瓷中，增韧碳氮化钛金属陶瓷，改善碳氮化钛金属陶瓷性能的钛钨碳固溶体新制备方法。本发明研究中对几种不同的样品进行比对，发现过多的钛钨碳固溶体和过少的均不利于断裂韧性的提高，我们发现在在34％的质量比时最为合适。
Method for synthesizing carbon-nitrogen-tungsten-titanium solid solution and preparing toughened titanium carbonitride metal ceramic through molten salt method
The invention provides a method for synthesizing a carbon-nitrogen-tungsten-titanium solid solution and preparing toughened titanium carbonitride metal ceramic through a molten salt method, and relates to the field of metal ceramic material preparation.The method includes the steps that mixed molten salt of NaCl and Na2CO3 is adopted for calcining raw material powder composed of TiO2, WO3 and carbon black for 1 h at the temperature of 1350 DEG C in the nitrogen atmosphere, the titanium-tungsten-carbon solid solution is synthesized, the hardness of the prepared metal ceramic material is 10.7-17.1 GPa, and the toughness of the metal ceramic material is improved. The fracture toughness is 5.8 MPa.m < 1/2 > to 14.25 MPa.m < 1/2 >, and the bending strength is 600 MPa to 1800 MPa. The novel preparation method of the titanium-tungsten-carbon solid solution is applied to the field of metal ceramic, the different solid solutions are added into titanium carbonitride metal ceramic, the titanium carbonitride metal ceramic is toughened, and the performance of the titanium carbonitride metal ceramic is improved. In the research, several different samples are compared, it is found that too many titanium-tungsten-carbon solid solutions and too few titanium-tungsten-carbon solid solutions are not beneficial to improvement of the fracture toughness, and we find that the titanium-tungsten-carbon solid solutions are most appropriate when the mass ratio is 34%.
本发明提供一种熔盐法合成碳氮钨钛固溶体及制备增韧碳氮化钛金属陶瓷的方法，涉及金属陶瓷材料制备领域，本发明采用NaCl与Na2CO3混合熔盐在1350℃下，氮气气氛1h煅烧TiO2、WO3、碳黑组成的原料粉体，合成了钛钨碳固溶体，制备出的金属陶瓷材料硬度为10.7～17.1GPa，断裂韧性为5.8～14.25MPa·m1/2，抗弯强度为600‑1800MPa。本发明应用于金属陶瓷领域，将这几种不同的固溶体加入碳氮化钛金属陶瓷中，增韧碳氮化钛金属陶瓷，改善碳氮化钛金属陶瓷性能的钛钨碳固溶体新制备方法。本发明研究中对几种不同的样品进行比对，发现过多的钛钨碳固溶体和过少的均不利于断裂韧性的提高，我们发现在在34％的质量比时最为合适。
Method for synthesizing carbon-nitrogen-tungsten-titanium solid solution and preparing toughened titanium carbonitride metal ceramic through molten salt method
一种熔盐法合成碳氮钨钛固溶体及制备增韧碳氮化钛金属陶瓷的方法
DU YONG (Autor:in) / LIU YULING (Autor:in) / ZHANG WEIBIN (Autor:in) / LIU XIAOFEI (Autor:in)
28.05.2024
Patent
Elektronische Ressource
Chinesisch
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