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A Novel Method to Fabricate Tough Cylindrical Ti2AlC/Graphite Layered Composite with Improved Deformation Capacity
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  • A Novel Method to Fabricate Tough Cylindrical Ti2AlC/Graphite Layered Composite with Improved Deformation Capacity
  • A Novel Method to Fabricate Tough Cylindrical Ti2AlC/Graphite Layered Composite with Improved Deformation Capacity
저자명
Li. Aijun,Chen. Lin,Zhou. Yanchun
간행물명
한국세라믹학회지
권/호정보
2012년|49권 4호|pp.369-374 (6 pages)
발행정보
한국세라믹학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Based on the structure feature of a tree, a cylindrical $Ti_2AlC$/graphite layered composite has been fabricated through heat treating a graphite column and six close-matched thin wall $Ti_2AlC$ cylinders bonded with the $Ti_2AlC$ powders at $1300^{circ}C$ and low oxygen partial pressure. SEM examination reveals that the bond interlayers between cylinders or that between cylinder and column are not fully dense without any crack formation. During the compressive test, the strain of the $Ti_2AlC$/graphite layered composite is about twice higher than that of the monolithic $Ti_2AlC$ ceramic, and the compressive strength of the layered composite is 348 MPa. The layered composite show the noncatastrophic fracture behaviors due to the debonding and shelling off of the layers, which are different from the monolithic $Ti_2AlC$ ceramic. The mechanism of the improved deformation capacity and noncatastrophic failure modes are attributed to the presence of the central soft graphite column and cracks deflection by the bond interlayers.