Different Growth-Temperature Effects on the Liquid-Phase-Deposited SiO[sub 2] Grown on Strained SiGe

Hwang, Joon; Chen, Y. H.; Chen, P. S.

doi:10.1149/1.3266882

Cited by 3 publications

(1 citation statement)

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“…The deposition rate is increased by addition of boric acid (H 3 BO 3 ) to the SiO 2 -saturated H 2 SiF 6 solution, as a result of the reaction normalH 3 BO 3 + 4 HF → BF 4 − + normalH 3 normalO + + 2 normalH 2 normalO According to eq , the concentration of hydrofluoric acid (HF) in SiO 2 -saturated H 2 SiF 6 solution will decrease upon addition of H 3 BO 3 , and supersaturated SiO 2 solution will form according to eq . SiO 2 films on substrates of Si wafer, glass, gallium arsenide, and SiGe, among others, have been successfully obtained with the LPD method. − …”

Section: Preparation Characterization and Evaluation Of Coatingsmentioning

confidence: 99%

Fouling and Corrosion Properties of SiO₂ Coatings on Copper in Geothermal Water

Chen

Liu

Zhou

2012

Ind. Eng. Chem. Res.

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Two critical problems in geothermal utilization are corrosion and fouling on the surfaces of plants and fittings, and use of surface coatings is a good method to overcome such difficulties. Silica coatings with film thickness of several hundred nanometers on copper substrates were prepared by the liquid-phase deposition technique and characterized with respect to surface morphology, composition, surface free energy, roughness, and film thickness. Examinations of both fouling in calcium carbonate solution and corrosion in corrosive geothermal water on the surfaces of SiO 2 -coated samples were performed. The results showed that the fouling rate on the SiO 2 -coated surface was obviously reduced compared with that on the polished surface. Moreover, the inhibition of corrosion on the modified surface was found even though, after a long immersion time, the corrosion resistance action decreased because of the surface peeling of SiO 2 -coated samples. The corrosion behavior of the SiO 2 coating was further studied with electrochemical measurements by electrochemical impedance spectroscopy. This work suggests a new possibility for solving the fouling and corrosion issues encountered in the use of geothermal water.

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