KR102444652B1 - 고체적율 알루미늄 복합재 및 그 제조방법 - Google Patents
고체적율 알루미늄 복합재 및 그 제조방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 도 1의 상기 고체적율 알루미늄 복합재의 제조방법을 공정에 따라 도시하는 개략도이다.
도 3은 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법을 도시하는 흐름도이다.
도 4는 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 적용되는 붕화티타늄과 알루미늄 사이의 접촉각을 나타내는 그래프이다.
도 5는 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 적용되는 붕화티타늄과 알루미늄 사이의 접촉 형태를 나타내는 사진들이다.
도 6은 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법을 수행하기 위한 붕화티타늄 분말을 나타내는 주사전자현미경 사진들이다.
도 7은 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법을 수행하여 형성한 붕화티타늄 프리폼을 나타내는 주사전자현미경 사진들이다.
도 8은 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 의하여 형성한 붕화티타늄-알루미늄 복합재의 단계에 따른 외형 사진들이다.
도 9는 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 의하여 형성한 붕화티타늄-알루미늄 복합재의 미세조직을 나타내는 주사전자현미경 사진이다.
도 10은 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 의하여 형성한 붕화티타늄-알루미늄 복합재의 EPMA 맵핑 사진들이다.
도 11은 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 의하여 형성한 붕화티타늄-알루미늄 복합재의 X-선 회절 패턴을 나타내는 그래프이다.
도 12는 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 의하여 형성한 붕화티타늄-알루미늄 복합재의 미세구조를 나타내는 투과전자현미경 사진들이다.
도 13은 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 의하여 형성한 붕화티타늄-알루미늄 복합재의 상온에서의 응력-변형률 그래프이다.
도 14은 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 의하여 형성한 붕화티타늄-알루미늄 복합재의 상온에서의 압축 응력-변형률 그래프이다.
도 15는 본 발명의 일 실시예에 따른 고체적율 알루미늄 복합재의 제조방법에 의하여 형성한 붕화티타늄-알루미늄 복합재의 인장 시험 후의 파괴 표면을 나타내는 주사전자현미경 사진들이다.
원소 | Al | Fe | Cu | Mg | Mn | Si | Ti | V | Zn |
함량 | 99.8이상 | 0.1 이하 |
0.001 이하 |
0.001 이하 |
0.02 이하 |
0.05 이하 |
0.04 이하 |
0.02 이하 |
0.002 이하 |
구분 | 밀도 (g/cm3) |
UTS (MPa) |
CYS (MPa) |
경도 (Hv) |
CTE (ppmK-1) |
TiB2-알루미늄 복합재 | 3.84 | 471.5 | 500.4 | 194.4 | 12.97 |
Al1050 알루미늄 합금 | 2.71 | 67.1 | 59.4 | 23.2 | 26.28 |
Claims (17)
- 붕화티타늄 프리폼을 형성하는 단계;
상기 붕화티타늄 프리폼 상에 고상의 알루미늄을 배치하는 단계;
상기 알루미늄을 가열하여 용융시키는 단계;
상기 용융된 알루미늄이 상기 붕화티타늄 프리폼 내로 함침되도록, 상기 용융된 알루미늄을 가스를 이용하여 가압하는 단계; 및
상기 용융된 알루미늄이 함침된 상기 붕화티타늄 프리폼을 냉각하여, 알루미늄 복합재를 형성하는 단계;를 포함하고,
상기 알루미늄을 가열하여 용융시키는 단계는,
진공 분위기에서 900℃ 내지 1800℃ 범위의 온도로 수행되고,
상기 용융된 알루미늄을 가스를 이용하여 가압하는 단계는,
1 bar 내지 20 bar의 압력의 불활성 가스를 상기 용융된 알루미늄에 주입하여 수행되는,
고체적율 알루미늄 복합재의 제조방법. - 제 1 항에 있어서,
상기 붕화티타늄 프리폼을 형성하는 단계는,
붕화티타늄 분말을 압축하여 붕화티타늄 압축재를 형성하는 단계; 및
상기 붕화티타늄 압축재를 소결하여 상기 붕화티타늄 프리폼을 형성하는 단계;를 포함하는,
고체적율 알루미늄 복합재의 제조방법. - 제 2 항에 있어서,
상기 붕화티타늄 분말은,
2 μm 내지 3 μm 범위의 평균 입자크기를 가지는,
고체적율 알루미늄 복합재의 제조방법. - 제 2 항에 있어서,
상기 붕화티타늄 분말의 압축은,
60 MPa 내지 100 MPa 범위의 단축 압력으로 수행되는,
고체적율 알루미늄 복합재의 제조방법. - 제 2 항에 있어서,
상기 붕화티타늄 압축재의 소결은,
불활성 가스 분위기에서, 900℃ 내지 1100℃ 범위의 온도에서, 10분 내지 120분 동안 수행되는,
고체적율 알루미늄 복합재의 제조방법. - 삭제
- 삭제
- 제 1 항에 있어서,
상기 알루미늄을 가열하여 용융시키는 단계와 상기 용융된 알루미늄을 가스를 이용하여 가압하는 단계는, 동시에 수행되는,
고체적율 알루미늄 복합재의 제조방법. - 제 1 항에 있어서,
상기 알루미늄은,
순수한 알루미늄 또는 알루미늄 합금을 포함하는,
고체적율 알루미늄 복합재의 제조방법. - 제 1 항 내지 제 5 항, 제 8 항 및 제 9 항 중 어느 한 항에 의한 고체적율 알루미늄 복합재의 제조방법에 의해 제조된 고체적율 알루미늄 복합재로서,
붕화티타늄 프리폼; 및
상기 붕화티타늄 프리폼 내에 균일하게 분산되어 함침된 알루미늄;을 포함하고,
3.0 g/cm3 내지 4.2 g/cm3의 밀도를 가지고,
100 MPa 내지 500 MPa의 인장 강도, 100 MPa 내지 600 MPa의 압축 항복 강도, 및 40 Hv 내지 250 Hv의 비커스 경도를 가지고,
11 ppmK-1 내지 17 ppmK-1 의 열팽창 계수를 가지는,
고체적율 알루미늄 복합재. - 제 10 항에 있어서,
상기 붕화티타늄 프리폼은,
20 부피% 내지 50 부피%의 기공도의 기공들을 가지고, 상기 기공들의 적어도 일부에 상기 알루미늄이 충진된,
고체적율 알루미늄 복합재. - 제 10 항에 있어서,
상기 고체적율 알루미늄 복합재는,
상기 붕화티타늄의 취성 파괴와 알루미늄의 연성 파괴가 혼합된 혼합 파괴 거동을 나타내는,
고체적율 알루미늄 복합재. - 삭제
- 삭제
- 삭제
- 세라믹 프리폼을 형성하는 단계;
상기 세라믹 프리폼 상에 고상의 알루미늄을 배치하는 단계;
상기 알루미늄을 가열하여 용융시키는 단계;
상기 용융된 알루미늄이 상기 세라믹 프리폼 내로 함침되도록, 상기 용융된 알루미늄을 가스를 이용하여 가압하는 단계; 및
상기 용융된 알루미늄이 함침된 상기 세라믹 프리폼을 냉각하여, 알루미늄 복합재를 형성하는 단계;를 포함하고,
상기 세라믹 프리폼은, Al2O3, B4C, SiC, 및 TiC 중 적어도 어느 하나를 포함하는,
고체적율 알루미늄 복합재의 제조방법. - 삭제
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