Berylllium bearing amorphous metallic alloys formed by low cooling rates
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C22C-009/00
C22C-014/00
출원번호
US-0044814
(1993-04-07)
발명자
/ 주소
Peker Atakan (Pasadena CA) Johnson William L. (Pasadena CA)
출원인 / 주소
California Institute of Technology (Pasadena CA 02)
인용정보
피인용 횟수 :
250인용 특허 :
0
초록▼
Alloys which form metallic glass upon cooling below the glass transition temperature at a rate appreciably less than 106 K/s comprise beryllium in the range of from 5 to 52 atomic percent and at least one early transition metal in the range of from 30 to 75% and at least one late transition metal in
Alloys which form metallic glass upon cooling below the glass transition temperature at a rate appreciably less than 106 K/s comprise beryllium in the range of from 5 to 52 atomic percent and at least one early transition metal in the range of from 30 to 75% and at least one late transition metal in the range of from 2 to 52%. A preferred group of metallic glass alloys has the formula (Zr1-XTiX)a(Cu1-yNiy)bBec. Generally, a is in the range from 30 to 75% and the lower limit increases with increasing x. When x is in the range of from 0 to 0.15, b is in the range of from 5 to 52%, and c is in the range of from 6 to 47%. When x is in the range of from 0.15 to 0.4, b is in the range of from 5 to 52%, and c is in the range of from 5 to 47%. When x is in the range of from 0.4 to 0.6, b is in the range of from 5 to 52%, and c is in the range of from 5 to 47%. When x is in the range of from 0.6 to 0.8, b is in the range of from 5 to 52%, and c is in the range of from 5 to 42%. When x is in the range of from 0.8 to 1, b is in the range of from 5 to 52%, and c is in the range of from 5 to 30%. Other elements may also be present in the alloys in varying proportions.
대표청구항▼
A metallic glass formed of an alloy having the formula (Zr1-zxTix)a1ETMa2(Cu1-yNiy)b1LTMb2Bec where x and y are atomic fractions, and a1, a2, b1, b2, and c are atomic percentages, wherein: ETM is at least one early transition metal selected from the group consisting of V, Nb, Hf, and Cr, wherein the
A metallic glass formed of an alloy having the formula (Zr1-zxTix)a1ETMa2(Cu1-yNiy)b1LTMb2Bec where x and y are atomic fractions, and a1, a2, b1, b2, and c are atomic percentages, wherein: ETM is at least one early transition metal selected from the group consisting of V, Nb, Hf, and Cr, wherein the atomic percentage of Cr is no more than 0.2a1; LTM is a late transition metal selected from the group consisting of Fe, Co, Mn, Ru, Ag and Pd; a2 is in the range of from 0 to 0.4a1; x is in the range of from 0 to 0.4; and y is in the range of from 0 to 1; and (A) when x is in the range of from 0 to 0.15: (a1+a2) is in the range of from 30 to 75%, (b1+b2) is in the range of from 5 to 52%, b2 is in the range of from 0 to 25%, and c is in the range of from 6 to 47%; (B) when x is in the range of from 0.15 to 0.4: (a1+a2) is in the range of from 30 to 75%, (b1+b2) is in the range of from 5 to 52%, b2 is in the range of from 0 to 25%, and c is in the range of from 5 to 47%.
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