語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
An alternative to chromates for corr...
~
Williams, Melissa.
FindBook
Google Book
Amazon
博客來
An alternative to chromates for corrosion protection for aluminum alloys .
紀錄類型:
書目-語言資料,印刷品 : Monograph/item
正題名/作者:
An alternative to chromates for corrosion protection for aluminum alloys ./
作者:
Williams, Melissa.
面頁冊數:
95 p.
附註:
Source: Masters Abstracts International, Volume: 49-05, page: .
Contained By:
Masters Abstracts International49-05.
標題:
Engineering, Chemical. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1491620
ISBN:
9781124604107
An alternative to chromates for corrosion protection for aluminum alloys .
Williams, Melissa.
An alternative to chromates for corrosion protection for aluminum alloys .
- 95 p.
Source: Masters Abstracts International, Volume: 49-05, page: .
Thesis (M.S.)--University of Rhode Island, 2011.
Aluminum alloys, such as Al 6061-T6 and Al 7075-T6, are widely used in industry due to their high strength to weight ratio and good mechanical properties. The corrosion of these alloys, however, is an expensive and critical problem since the alloys are susceptible to pitting and crevice corrosion in marine environments. The most significant environmental factor, which contributes to the corrosion of these alloys, is the chloride ion found in marine environments or water condensed from humid air contaminated with soluble chloride salts.
ISBN: 9781124604107Subjects--Topical Terms:
1018531
Engineering, Chemical.
An alternative to chromates for corrosion protection for aluminum alloys .
LDR
:03987nam 2200361 4500
001
1401204
005
20111013150324.5
008
130515s2011 ||||||||||||||||| ||eng d
020
$a
9781124604107
035
$a
(UMI)AAI1491620
035
$a
AAI1491620
040
$a
UMI
$c
UMI
100
1
$a
Williams, Melissa.
$3
1680325
245
1 3
$a
An alternative to chromates for corrosion protection for aluminum alloys .
300
$a
95 p.
500
$a
Source: Masters Abstracts International, Volume: 49-05, page: .
500
$a
Advisers: Leon Thiem; Richard Brown.
502
$a
Thesis (M.S.)--University of Rhode Island, 2011.
520
$a
Aluminum alloys, such as Al 6061-T6 and Al 7075-T6, are widely used in industry due to their high strength to weight ratio and good mechanical properties. The corrosion of these alloys, however, is an expensive and critical problem since the alloys are susceptible to pitting and crevice corrosion in marine environments. The most significant environmental factor, which contributes to the corrosion of these alloys, is the chloride ion found in marine environments or water condensed from humid air contaminated with soluble chloride salts.
520
$a
Traditionally, chromate based conversion coatings have been used for many years for the protection of aluminum alloys. Chromates are efficient corrosion inhibitors for aluminum and its alloys in near neutral marine environments containing aggressive anions such as chlorides. Although the hexavalent chromium ion, Cr6+, may be a superior corrosion inhibitor and used in numerous industrial systems, it is environmentally unsafe. Over the past several years, federal agencies, such as the Environmental Protection Agency (EPA) and the Department of Defense (DoD), have increasingly limited the use of chromium containing compounds due to their toxic and carcinogenic effects. In addition, there is a direct economic challenge associated with costs for environmental compliance along with increased liability for claims of exposure in the workplace with the continued use of chromates. Therefore, there is a need to identify new corrosion inhibitors for aluminum alloys.
520
$a
As an alternate conversion coating, a new titanate conversion coating was researched and developed for the Al 2024-T3 alloy and was shown to be effective. The objective of this research was to determine if the coating process could be applied to Al 6061-T6 and Al 7075-T6. The coating process involves immersion of the alloy in a titante solution bath, which produces a passive film. The corrosion resistance of coated samples has been evaluated using electrochemical impedance spectroscopy (EIS) and potentiodynamic electrochemical techniques. Electrochemical testing and energy dispersive X-ray analysis indicated that the titanate ion would retard corrosion in a similar manner to the chromate ion if fluoride ions (F-) were not present on the surface.
520
$a
A study was also conducted to determine if Al 6061-T6 and Al 7075-T6 were easily susceptible to crevice corrosion in a marine environment. The study yielded important results regarding protection of the alloy against crevice corrosion by the titanate ion. Corrosion was only seen on samples not exposed to the titanate ion. A conclusion may be made that titanate coatings appear to be viable alternatives to chromate coatings but further investigation will be required in order to determine an optimum conversion coating bath, which will produce impedance magnitudes comparable to those measured for the Al 2024-T3 alloy.
590
$a
School code: 0186.
650
4
$a
Engineering, Chemical.
$3
1018531
650
4
$a
Engineering, Metallurgy.
$3
1023648
690
$a
0542
690
$a
0743
710
2
$a
University of Rhode Island.
$b
Chemical Engineering.
$3
1680326
773
0
$t
Masters Abstracts International
$g
49-05.
790
1 0
$a
Thiem, Leon,
$e
advisor
790
1 0
$a
Brown, Richard,
$e
advisor
790
1 0
$a
Brown, Richard
$e
committee member
790
1 0
$a
Bothun, Geoffrey
$e
committee member
790
1 0
$a
Yang, Sze
$e
committee member
790
$a
0186
791
$a
M.S.
792
$a
2011
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1491620
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9164343
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入