MOBILITY AND OXIDATION OF BORON IN FE-B AND FE-NI-B GLASSES

被引：1
|
作者：
OXBORROW, CA
MORUP, S
CHORKENDORFF, I
LARSEN, J
机构：
[1] Laboratory of Applied Physics, Technical University of Denmark
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1993年 / 76卷 / 1-4期
关键词：
D O I：
10.1016/0168-583X(93)95146-V
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Ultrafine particles of iron alloys are pyrophoric and must be passivated so as to form an outer oxide layer before being exposed to air. It is found that during annealing of amorphous Fe-B alloys, boron diffuses to the passivation layer, where it reacts with oxygen and may reduce the iron oxides. Hence, the metallic cores of such alloys become depleted of boron. Once boron has been segregated in this way it may also be lost from the sample by fusing with quartz annealing vessels. These changes in composition may affect the stability of the amorphous phase, and change the general properties of the alloy.
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页码：99 / 100
页数：2
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