Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Compact Ti2AlC ceramic and sintering method thereof
The invention provides a compact Ti2AlC ceramic and a sintering method thereof. According to the method, pure-phase Ti2AlC powder is subjected to SPS (spark plasma sintering). According to the preparation method, pure-phase Ti2AlC powder is taken as a sintering raw material, and the compact Ti2AlC ceramic with excellent performance is prepared by selecting sintering process parameters in consideration of great influence of the SPS sintering process parameters on the phase, grain size and physical and mechanical properties of the prepared Ti2AlC bulk material. Particularly, when pure-phase Ti2AlC powder is sintered at the sintering temperature of 1300 DEG C, the sintering pressure of 40 MPa and the heat preservation time of 10 min, the density of the material sintered through the process is 96.8%, the bending strength of the material is 661 MPa, the fracture toughness of the material is 8.32 MPa.m < 1/2 >, and compared with the mechanical property of Ti2AlC prepared through hot pressing sintering, the bending strength of the material is improved by about 72%, and the fracture toughness of the material is improved by about 5.85%.
本发明提供一种致密Ti2AlC陶瓷及其烧结方法，该方法为采用纯相Ti2AlC粉末进行SPS放电等离子烧结。本发明以纯相Ti2AlC粉末作为烧结原料，考虑到SPS烧结工艺参数对制备出的Ti2AlC块材的物相、晶粒尺寸、物理力学性能的影响较大，通过对烧结工艺参数进行选择，从而制备出了性能优异的致密Ti2AlC陶瓷。尤其是当纯相Ti2AlC粉末在烧结温度1300℃，烧结压强40MPa，保温时间10min时，经此工艺烧结后材料的致密度为96.8％，弯曲强度为661MPa，断裂韧性为8.32MPa·m1/2，与热压烧结制备所得Ti2AlC的力学性能相比，弯曲强度提高约72％，断裂韧性提高约5.85％。
Compact Ti2AlC ceramic and sintering method thereof
The invention provides a compact Ti2AlC ceramic and a sintering method thereof. According to the method, pure-phase Ti2AlC powder is subjected to SPS (spark plasma sintering). According to the preparation method, pure-phase Ti2AlC powder is taken as a sintering raw material, and the compact Ti2AlC ceramic with excellent performance is prepared by selecting sintering process parameters in consideration of great influence of the SPS sintering process parameters on the phase, grain size and physical and mechanical properties of the prepared Ti2AlC bulk material. Particularly, when pure-phase Ti2AlC powder is sintered at the sintering temperature of 1300 DEG C, the sintering pressure of 40 MPa and the heat preservation time of 10 min, the density of the material sintered through the process is 96.8%, the bending strength of the material is 661 MPa, the fracture toughness of the material is 8.32 MPa.m < 1/2 >, and compared with the mechanical property of Ti2AlC prepared through hot pressing sintering, the bending strength of the material is improved by about 72%, and the fracture toughness of the material is improved by about 5.85%.
本发明提供一种致密Ti2AlC陶瓷及其烧结方法，该方法为采用纯相Ti2AlC粉末进行SPS放电等离子烧结。本发明以纯相Ti2AlC粉末作为烧结原料，考虑到SPS烧结工艺参数对制备出的Ti2AlC块材的物相、晶粒尺寸、物理力学性能的影响较大，通过对烧结工艺参数进行选择，从而制备出了性能优异的致密Ti2AlC陶瓷。尤其是当纯相Ti2AlC粉末在烧结温度1300℃，烧结压强40MPa，保温时间10min时，经此工艺烧结后材料的致密度为96.8％，弯曲强度为661MPa，断裂韧性为8.32MPa·m1/2，与热压烧结制备所得Ti2AlC的力学性能相比，弯曲强度提高约72％，断裂韧性提高约5.85％。
Compact Ti2AlC ceramic and sintering method thereof
一种致密Ti2 AlC陶瓷及其烧结方法
BAI ZHIMING ( Autor:in ) / WANG KAI ( Autor:in ) / QU JIAMIN ( Autor:in ) / GUO HONGBO ( Autor:in ) / SU JINBAO ( Autor:in ) / ZHANG XINNAN ( Autor:in )
13.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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