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An in-situ investigation of the passive film on stainless steel and Inconel 600 in high temperature, pressurized, impurity containing water

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	An in-situ investigation of the passive film on stainless steel and Inconel 600 in high temperature, pressurized, impurity containing water
作者:	Mintz, Todd Samuel.
面頁冊數:	400 p.
附註:	Chair: Thomas M. Devine.
附註:	Source: Dissertation Abstracts International, Volume: 65-02, Section: B, page: 0978.
Contained By:	Dissertation Abstracts International65-02B.
標題:	Engineering, Materials Science.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3121616
ISBN:	0496689673

An in-situ investigation of the passive film on stainless steel and Inconel 600 in high temperature, pressurized, impurity containing water
Mintz, Todd Samuel.

An in-situ investigation of the passive film on stainless steel and Inconel 600 in high temperature, pressurized, impurity containing water [electronic resource] - 400 p.

Chair: Thomas M. Devine.

Thesis (Ph.D.)--University of California, Berkeley, 2003.

An in situ investigation of the films that formed on stainless steel and Inconel 600 at 288°C and 1500psi were performed using Surface Enhanced Raman Spectroscopy (SERS). By examining the changes in the films that formed on these materials, information was obtained about how these films affect the Intergranular Stress Corrosion Cracking (IGSCC) of these two metals. Stainless steel was examined in water with dilute amounts of sulfate added, which is known to enhance IGSCC. It was observed that the addition of sulfates in no way affected the films that formed on the stainless steel. The enhanced susceptibility for IGSCC of stainless steel is due to an increase in the conductivity of the water. The increased conductivity, due to the added sulfate, reduced the potential drop down a crack, so the minimum concentration of oxygen required to cause IGSCC is less than in high purity water. Thus, the sulfate additions led to an enhancement in the IGSCC. Incone1 600 was studied in boron and lithium containing solution at 288°C. The results showed that in the corrosion potential region where IGSCC occurs, an M3O4 oxide enriched in chromium was stable. This suggested that the M3O4 was the deleterious film that enhanced SCC in the Inconel 600. Once the potential was increased above the SCC region, NiO formed, which must counteract the effects of the chromium enriched M3O4. The results from this study suggested that there is a correlation between film formation and SCC susceptibility.

ISBN: 0496689673Subjects--Topical Terms:

226940
Engineering, Materials Science.

An in-situ investigation of the passive film on stainless steel and Inconel 600 in high temperature, pressurized, impurity containing water
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520 # $a An in situ investigation of the films that formed on stainless steel and Inconel 600 at 288°C and 1500psi were performed using Surface Enhanced Raman Spectroscopy (SERS). By examining the changes in the films that formed on these materials, information was obtained about how these films affect the Intergranular Stress Corrosion Cracking (IGSCC) of these two metals. Stainless steel was examined in water with dilute amounts of sulfate added, which is known to enhance IGSCC. It was observed that the addition of sulfates in no way affected the films that formed on the stainless steel. The enhanced susceptibility for IGSCC of stainless steel is due to an increase in the conductivity of the water. The increased conductivity, due to the added sulfate, reduced the potential drop down a crack, so the minimum concentration of oxygen required to cause IGSCC is less than in high purity water. Thus, the sulfate additions led to an enhancement in the IGSCC. Incone1 600 was studied in boron and lithium containing solution at 288°C. The results showed that in the corrosion potential region where IGSCC occurs, an M3O4 oxide enriched in chromium was stable. This suggested that the M3O4 was the deleterious film that enhanced SCC in the Inconel 600. Once the potential was increased above the SCC region, NiO formed, which must counteract the effects of the chromium enriched M3O4. The results from this study suggested that there is a correlation between film formation and SCC susceptibility.
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