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Macrosegregation and sedimentation i...

Xu, Lei.

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Macrosegregation and sedimentation in liquid phase sintering: Specific studies in the nickel-tungsten system and iron-copper system.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Macrosegregation and sedimentation in liquid phase sintering: Specific studies in the nickel-tungsten system and iron-copper system./
Author:	Xu, Lei.
Description:	104 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4240.
Contained By:	Dissertation Abstracts International65-08B.
Subject:	Engineering, Materials Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3142690
ISBN:	0496003488

Macrosegregation and sedimentation in liquid phase sintering: Specific studies in the nickel-tungsten system and iron-copper system.
Xu, Lei.

Macrosegregation and sedimentation in liquid phase sintering: Specific studies in the nickel-tungsten system and iron-copper system. - 104 p.

Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4240.

Thesis (Ph.D.)--Michigan Technological University, 2004.

Based on experimental results, a macrosegregation model has been proposed to explain sedimentation occurring in liquid phase sintering (LPS).

ISBN: 0496003488Subjects--Topical Terms:

1017759
Engineering, Materials Science.

Macrosegregation and sedimentation in liquid phase sintering: Specific studies in the nickel-tungsten system and iron-copper system.
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020 $a 0496003488
035 $a (UnM)AAI3142690
035 $a AAI3142690
040 $a UnM $c UnM
100 1 $a Xu, Lei. $3 1269445
245 1 0 $a Macrosegregation and sedimentation in liquid phase sintering: Specific studies in the nickel-tungsten system and iron-copper system.
300 $a 104 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4240.
500 $a Adviser: Shu-Zu Lu.
502 $a Thesis (Ph.D.)--Michigan Technological University, 2004.
520 $a Based on experimental results, a macrosegregation model has been proposed to explain sedimentation occurring in liquid phase sintering (LPS).
520 $a Macrosegregation has been observed both in the sintering process of nickel-tungsten (Ni-W) alloys and iron-copper (Fe-Cu) alloys. The experimental results indicate that whether the mushy zone is located at the top or at the bottom of the sample, macrosegregation can occur if a nonuniform structure is formed during LPS. The initial particle settling or floating gives rise to the liquid composition gradient. Elimination of the gradient requires substantial time and is accompanied by a retreat of the mushy zone. At the same time, the mass in the mushy zone is transported to the liquid zone. If the initial settling does not happen, macrosegregation will not appear. But a "true" sedimentation can be observed. These two types of sedimentation were compared and the rates were quasi-quantitatively estimated.
520 $a A numerical simulation model has been developed to simulate the macrosegregation process. This calculation provided a further understanding of the sedimentation mechanisms.
590 $a School code: 0129.
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Engineering, Metallurgy. $3 1023648
690 $a 0794
690 $a 0743
710 2 0 $a Michigan Technological University. $3 1032921
773 0 $t Dissertation Abstracts International $g 65-08B.
790 1 0 $a Lu, Shu-Zu, $e advisor
790 $a 0129
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3142690